Relevant bibliographies by topics / Sulfate de manganèse

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Academic literature on the topic 'Sulfate de manganèse'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Sulfate de manganèse"

1

Talinli, I. "Pretreatment of Tannery Wastewaters." Water Science and Technology 29, no. 9 (May 1, 1994): 175–78. http://dx.doi.org/10.2166/wst.1994.0472.

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High Pollution treatment necessities were aimed at on COD basis (8000 mg/l). Case studies include the treatability study, conceptual design and monitoring of the actual treatment plant performance. To reach a pretreatment standard value of 800 mg/l COD, chemical and biological treatment were necessary including chromium removal and sulfide oxidation. Results of the treatability tests indicate that chemical coagulation is efficient and reliable in terms of COD removal. However, materials used in the process such as sulfuric acid and sodium sulfate and adding of manganese sulfate as catalyst for sulfide oxidation increase the sulfate concentrations in the influent of the biological treatment In this case, lime was used for coagulation both to reach sulfate standard and to protect the biological system.
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Mohamed, N., and SA Tariq. "A Study of Chemical Reactions in Molten Sodium Hydrogen Sulfate Potassium Hydrogen Sulfate Eutectic. V. The Reactions of Eleven Acetates." Australian Journal of Chemistry 47, no. 3 (1994): 571. http://dx.doi.org/10.1071/ch9940571.

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The reactions of the acetates of lithium, sodium, potassium, magnesium, calcium, strontium, barium, manganese, cobalt, zinc and lead with molten sodium hydrogen sulfate-potassium hydrogen sulfate eutectic were investigated by means of thermogravimetry, differential thermal analysis, X-ray diffraction, mass spectral and infrared methods. In these acid-base reactions, the metal acetates were found to be converted into the corresponding metal sulfates, and acetic acid was the volatile product of each reaction. The temperatures and stoichiometries of the reactions have been determined.
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Selvaraj, Ramesh K. "387 Effect of trace minerals (25-hydroxycholecalciferol, Zinc and Manganese) supplementation on the immune responses of livestock." Journal of Animal Science 98, Supplement_4 (November 3, 2020): 169. http://dx.doi.org/10.1093/jas/skaa278.310.

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Abstract Micronutrients such as 25-hydroxycholecalciferol, zinc and manganese are included in livestock feed to achieve optimal growth and improved immune function. Vitamin D (cholecalciferol) modulates immune responses. The effect of Vitamin D on immune cells depends on the subtype of immune cells. Monocytes and macrophages constitutively express Vitamin D receptor and hence 1, 25-dihydroxycholecalciferol increases maturation and the microbicidal activity of macrophages by increasing the production of nitric oxide, antimicrobial proteins and inflammatory cytokines and eventually acts to stimulate the innate immune system. On the other hand, 1,25-dihydroxycholecalciferol suppresses the action of adaptive immune responses by inducing T regulatory cells and increasing the production of IL-10. Superoxide dismutases (SOD) catalyzes conversion of superoxide radicals to oxygen and hydrogen peroxide and is considered a major antioxidant defense system in livestock. SOD is a metalloenzyme with zinc, copper, and manganese as a cofactor. Though trace minerals have traditionally been supplemented in animal diets as inorganic salts such as zinc sulfate and manganese sulfate, other forms of trace minerals have recently been promoted owing to better stability, bioavailability and absorption. Feeding layer diets marginally deficient in zinc and manganese as sulfates decreased the SOD activity, spleen, IL-1 and cathelicidin relative mRNA levels and supplementing zinc and manganese as hydroxychloride (OHCl) reversed the decrease in SOD activity, spleen IL-1 and cathelicidin relative mRNA levels. Feeding broiler diets low in zinc and manganese as sulfates decreased SOD activity, while supplementing the feed with ZnOHCl reversed the decrease in SOD. Increasing the MnOHCl in birds fed higher amounts of ZnOHCl further increased the SOD activity suggesting synergistic effects between ZnOHCl and MnOHCl on SOD activity and IL-1 production. In conclusion, micronutrients act to modify the immune response in livestock, and the form of micronutrients fed can increase the bioavailability of the micronutrients to improve the immune response.
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Moroz, O. M., S. O. Hnatush, O. V. Tarabas, C. I. Bohoslavets, G. V. Yavorska, and B. M. Borsukevych. "Sulfidogenic activity of sulfate and sulfur reducing bacteria under the influence of metal compounds." Biosystems Diversity 26, no. 1 (April 5, 2018): 3–10. http://dx.doi.org/10.15421/011801.

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Due to their high content in natural environments, heavy metals exhibit toxic effects on living organisms, which leads to a decrease in the biological diversity and productivity of ecosystems. In niches with low oxidation reducing potential, sulfate and sulfur reducing bacteria carry out the reducing transformation of oxidized sulfur compounds with the formation of significant amounts of hydrogen sulfide. H2S produced by bacteria interacts with metal ions, precipitating them in the form of sulfides. The aim of this work was to investigate the influence of lead, cuprum (II), iron (II) and manganese (II) salts on the production of hydrogen sulfide by bacteria of the Desulfovibrio and Desulfuromonas genera, isolated from Yavorivske Lake, and to evaluate the efficiency of their use for purifying media, enriched with organic compounds, from hydrogen sulfide and heavy metals. The content of heavy metal ions in the water of Yavorivske Lake was determined by the spectrophotometric method. The bacteria were grown for 10 days at 30 °C in the Kravtsov-Sorokin medium under anaerobic conditions. To study the influence of metal ions on bacteria growth and their H2S production, cells were incubated with metal salts (0.5–4.0 mM), washed and grown in media with SO42– or S0. To determine the level of metal ions binding by H2S, produced by bacteria, cells were grown in media with metal compounds (0.5–4.0 mM), SO42– or S0. Biomass was determined by turbidimetric method. In the cultural liquid the content of H2S was determined quantitatively by spectrophotometric method, and qualitatively by the presence of metal cations. The content of metal sulfides in the growth medium was determined by weight method. Sulfate and sulfur-reducing bacteria were resistant to 2.0 mM Pb(NO3)2, 2.5 mM CuCl2, 2.5 mM FeCl2 × 4H2O and 2.0 mM MnCl2 × 4H2O, therefore they are promising for the development of biotechnologies for the purification of water resources contaminated by sulfur and metal compounds. When present in a medium with sulfates or sulfur of 1.0–1.5 mM lead, cuprum (II), iron (II) or manganese (II) ions, they almost completely bind with the H2S produced by bacteria in the form of insoluble sulfides, which confirms the negative results of qualitative reactions to their presence in the cultural liquid.
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Yuniarti, Ating, Nasrullah Bai Arifin, Muhammad Fakhri, and Anik M. Hariati. "Spore production and sporulation efficacy of Bacillus subtilis under different source of manganese supplementation [Produksi Spora dan Efisiensi Sporulasi Bacillus subtilis dengan Suplementasi Mangan dari Sumber yang Berbeda]." Jurnal Ilmiah Perikanan dan Kelautan 11, no. 2 (October 25, 2019): 51. http://dx.doi.org/10.20473/jipk.v11i2.15250.

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AbstractBacillus is a species widely used as a probiotic in the aquaculture industry. The Bacillus spores have more advantages than their vegetative ones, and an addition of minerals such as calcium, magnesium, and manganese can improve the spore production. The purpose of this study was to determine the effect of different sources of manganese on the production and sporulation efficacy of B. subtilis SB3. The sources of manganese used in this study were manganese chloride (MnCl2) and manganese sulfate (MnSO4) at the concentration of 10 mM. Media without manganese supplementation was used as a control. The results showed that there was a significant effect of different manganese sources on the spore production of B. subtilis SB3. The highest spore production was found in media with MnCl2 supplementation with the total spore of 8.77 x 107 spores. mL-1. However, spore production with MnSO4 supplementation was still higher (22.7%) compared to that without manganese supplementation. The decrease in spore production with MnSO4 supplementation was possible due to the sulfate inhibition. The high spore production in media with MnCl2 supplementation was also preceded by the high production of vegetative cells from B. subtilis SB3 (2.54 x 108 cells. mL-1). The results indicated that manganese could stimulate both vegetative cell growth and its spores. The highest sporulation efficacy (35%) was also achieved in media with MnCl2 supplementation. On the other hand, the germination rate of B. subtilis SB3 spores was not influenced by manganese supplementation.Abstrak Bacillus adalah species yang banyak digunakan sebagai probiotik pada industri akuakultur. Dalam bentuk spora, species ini lebih banyak mempunyai kelebihan dibandingkan dalam bentuk vegetatifnya dan peningkatan produksi sporanya dapat dilakukan dengan penambahan mineral seperti kalsium, magnesium dan mangan. Tujuan penelitian ini adalah untuk mengetahui pengaruh sumber mangan yang berbeda terhadap produksi dan efisiensi sporulasi B. subtilis SB3 indigenous akuatik. Sumber mangan yang dipakai dalam penelitian ini adalah mangan klorida (MnCl2) dan mangan sulfat (MnSO4) sebanyak 10 mM dan sebagai kontrol digunakan media tanpa suplementasi mangan. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang nyata penggunaan sumber mangan yang berbeda terhadap produksi spora. Produksi spora tertinggi didapatkan pada media dengan suplementasi MnCl2 sebanyak 8,77 x 107 spora. mL-1. Sedangkan produksi spora dengan suplementasi MnSO4 juga masih lebih tinggi (22,7%) dibandingkan tanpa suplementasi magan. Penurunan produksi spora pada media dengan penambahan mangan sulfat diduga karena adanya penghambatan oleh sulfat. Tingginya produksi spora pada media dengan suplementasi MnCl2 sebelumnya juga didahului dengan tingginya produksi sel vegetatif dari B. subtilis SB3 (2,54 x 108sel. mL-1). Hal ini menunjukkan bahwa mangan dapat menstimulasi baik pertumbuhan sel vegetatif dan sporanya. Efisiensi sporulasi tertinggi juga dicapai pada media dengan suplementasi MnCl2 sebesar 35%. Di sisi lain, kemampuan germinasi spora B. subtilis SB3 tercatat sama dan tidak dipengaruhi oleh suplementasi mangan.
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6

Young, Jay A. "Manganese(II) Sulfate." Journal of Chemical Education 85, no. 7 (July 2008): 911. http://dx.doi.org/10.1021/ed085p911.

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7

Zou, Xing. "Improving in Oxidization Kinetics of Manganese Sulfate Hydrolyzates in Alkaline Solution Media." Advanced Materials Research 538-541 (June 2012): 2448–52. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2448.

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The oxidization of hydrolyzates of manganese sulfate had been investigated in ammoniacal solution. The results show that hydrolyzates of manganese sulfate are oxidized slowly by air, furthermore, their oxidization rate less depends on temperature and acidity in the ranges of their respective certain values, but the oxidization rate for hydrolyzates of manganese sulfate can be increased significantly by adding some additives, activatiing hydrolyzates or changing molecular structure of hydrolyzates.
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Mendoza Bobadilla, Jorge Luis, Adolfo Enrique Guerrero Escobedo, Walter Moreno Eustaquio, Marina Ponce Zavaleta, and Luisa Carbajo Arteaga. "Influence Modeling and optimization of sulphide removal by catalytic oxidation of tannery fur effluents [Modelamiento y optimización de la remoción de sulfuros por oxidación catalítica de efluentes de pelambre de curtiduría]." Journal of Energy & Environmental Sciences 5, no. 1 (June 13, 2021): 20–28. http://dx.doi.org/10.32829/eesj.v5i1.126.

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The residual effluents from the fur stage of the bovine leather tannery industry are characterized by having a high concentration of sulfides. The objective of this study was to evaluate the effects of aeration time and pH in the residual effluents of the leather stage of the tannery, with the catalysts MnO2 and MnSO4 separately; as well as, determine adjustment models through the response surface methodology and the optimal intervals of the best conditions that lead to a higher percentage of sulfide removal. For this reason, the sulphide removal percentage was evaluated from samples extracted from the pellet stage, by means of catalytic oxidation treatments; varying the catalyst, pH and aeration time. The catalysts used were manganese dioxide (MnO2) and manganese sulfate (MnSO4) and for each catalyst the pH was varied in the values ​​of 8.5; 9.5; 10.2 and 13.4; likewise, the aeration time was varied in the values ​​of 30, 60, 90, 120, 150, 180, 210 and 240 minutes. 64 treatments were carried out, with 3 repetitions each, reporting the average values ​​of the sulfide removal percentage. The response surface methodology was used to adjust the correlation of the variables to a quadratic model; Likewise, through contour graphs the regions with the highest percentage of sulfide removal were easily identified and by superimposing contour graphs the optimal ranges of the variables pH and aeration time were determined for removal percentages greater than 98%. Based on this evaluation, it is proposed for treatments with manganese dioxide, aeration times between 160 to 240 min and pH between 8.5 to 9 and for treatments with manganese sulfate, aeration times between 110 to 240 min and pH between 8.5 to 9.8. The coefficients of multiple determination R2 for the models with catalyst MnO2 and MnSO4 were 97.51% and 95.12% respectively. With the MnSO4 catalyst, higher removal percentages were achieved at a shorter aeration time, compared to the treatments carried out with the MnO2 catalyst.
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Hai, Nguyen Thi, and Dinh Thuy Hang. "Treatment of acidic wastewater from thien ke tin processing factory by sulfate reducing bioreactor: a pilot scale study." Vietnam Journal of Biotechnology 14, no. 4 (April 19, 2018): 777–84. http://dx.doi.org/10.15625/1811-4989/14/4/12313.

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A pilot-scale system of a total volume of 6 m3 using sulfate reducing (SR) bioreactor technology was established for the treatment of acidic wastewater from Thien Ke tin processing factory in Tuyen Quang province, Vietnam. In the system, the acidic wastewater with high metal content went first to a collecting tank filled with limestone gravels to increase pH to a value favorable for SRB growth, and at the second step to a SR bioreactor where sulfate reduction occurred to produce sulfide for metal precipitation. To activate the SR bioreactor, a laboratory SRB mixed culture dominated by Desufovibiro, Desulfobulbus and Desulfomicrobium species was added at a cell density of 106 cell/ml so that a full activation was achieved just after a week of incubation. Molasses was added to the SR bioreactor at 0.5 ml/L as substrate for the SRB growth during the operation. The performance of the system was studied under batch and continuous modes. The batch mode showed good results after three day-operation. The pH increased from 2.8 – 3.2 to 7 – 7.2, and a total of 750 mg/L sulfate was reduced to sulfide presumably by the SRB. The produced sulfide efficiently removed metals from the wastewater, such as iron from 143.1 mg/L to 0.3 mg/L, copper from 16.32 mg/L to 0.04 mg/L and manganese from 10.9 mg/L to 0.05 mg/L. The continuous mode with a hydraulic load of 100 l/h and an according retention time of three days showed constitutive contaminant removal. The effluent pH of the system was around 7 within six-day period. The sulfate reduction was active, keeping sulfate concentration in the final effluent as low as  150 mg/L. Accordingly, the three most metal contaminants (iron, copper and manganese) were found at concentrations below the regulated limits. The results showed the possibility of applying SR bioreactor technology for the treatment of AMD is feasible and the use of previously enriched mixed culture of SRB could be a good approach to shorten the activation period of the SR bioreactor.
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Rokosz, Krzysztof, Grzegorz Solecki, Gregor Mori, Rainer Fluch, Marianne Kapp, and Jouko Lahtinen. "Effect of Polishing on Electrochemical Behavior and Passive Layer Composition of Different Stainless Steels." Materials 13, no. 15 (August 1, 2020): 3402. http://dx.doi.org/10.3390/ma13153402.

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In the present paper, the effect of different polishing methods (mechanical and electrochemical) on passive layer chemistry and the corrosion behavior of stainless steels is investigated. It was found that CrNiMo austenites have a substantially better corrosion behavior than CrMnN ones. The nickel is enriched underneath the passive layer, while manganese tends to be enriched in the passive layer. It was also noted that immersion of manganese into an electrolyte preferentially causes its dissolution. It was found that high amounts of chromium (27.4%), molybdenum (3.3%), nickel (29.4%), with the addition of manganese (2.8%) after mechanical grinding, generates a better corrosion resistance than after electrochemical polishing. This is most likely because of the introduction of phosphates and sulfates into its structure, which is known for steels with a high amount of manganese. For highly alloyed CrNiMo steels, which do not contain a high amount of manganese, the addition of phosphates and/or sulphates via the electropolishing process results in a decrease in pitting corrosion resistance, which is also observed for high manganese steels. Electropolished samples show detrimental corrosion properties when compared to mechanically polished samples. This is attributed to substantial amounts of sulfate and phosphate from the electropolishing electrolyte present in the surface of the passive layer.
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Dissertations / Theses on the topic "Sulfate de manganèse"

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Cunha, Fernando de Jesus. "Caraterização de Pó de Despoeiramento da Fabricação de Ligas de Manganês e Avaliação de seu Potencial Agronômico." Universidade Federal de Viçosa, 2007. http://locus.ufv.br/handle/123456789/5537.

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The dusty from the siderurgical industry (PD) it is an industrial solid residue originating from the processes of the metallurgy of the ore of manganese (Mn). This material contains significant concentration of Mn. The responsible industrial unit for the production of approximately 2000 ton/month of PD's is Rio Doce Manganês (RDM), company of the group of the Company is Worth of Rio Doce (CVRD), nowadays, Company is Worth. PD's were characterized chemically (stage 1) and soon afterwards, appraised as source of Mn for soy plants (Glicine max L.), of the variety it Conquers and eucalyptus plants (Eucalyptus globulus), of the hybrid Urograndis, vegetation home (stage 2). Para the stage 1 of the research, they were chosen ten materials of PD's collected in the industrial units of Barbacena/MG, Ouro Preto/MG, Salvador/Ba and Corumbá/MS, respectively. The samples of PD's were analyzed according to the lixiviação procedures and solubilization of solid residues (ABNT NBR 10005 and 10006, 2004). The tenors of metals of PD ́s were quantified through espectrofotometry in optic emission with plasma coupled induced (ICP-OES) and espectrofotometry for atomic absorption (AAS). Soon afterwards, the experiment was accomplished vegetation home (stage 2), being used samples of two Latossolos (LVa), a loamy one (TG) and other sandy (TM), of the cities Viçosa/MG and Three Marias/MG, respectively. As sources of Mn, were appraised samples of PD's in natura originating from five industrial units of RDM/CVRD and two prepared fertilizers starting from PD's: the sulfate of manganese (SM-PD) and the oxide of manganese (OM-PD). it was included as treatment controls another fertilizer sulfate of commercial manganese (SM- with). The materials were applied in equivalent amount to the doses 0,0; 2,5; 5,0; 7,5 and 30,0 mg kg-1 of Mn, except for applied OM-PD just in the doses 2,5 and 30,0 mg kg-1 of Mn. The plants were collected and droughts in greenhouses with ventilation forced of hot air. Soon afterwards, they were determined the tenors of P, Mn, Zn, Ass, Faith, Cr, Ni, You and If, with xiextraction of nítric acid and percloric (3:1), for espectrofotometry of optical emission with plasma coupled induced (ICP-OES). The data were submitted to the analysis of multiple lineal regression, being evaluated the production of the mass of dry matter, concentration and accumulation of the chemical elements in the aerial part and roots of the soy plants and eucalyptus. The results obtained with the extracts solubilizados (stage 1), they presented tenors of The, Pb, If, Hg, Mn, Faith and Al in values above the maximum limits established by ABNT (I Enclose G, ABNT NBR 10004, 2004). on the other hand, the tenors of metals found in the leached extracts didn't result in high values, second referred her norm. There was not significant answer with the sources of applied Mn in the treatments, in what he/she concerns the production of the mass of dry matter of the soy plants and eucalyptus (stage 2). there also was not, accumulation of heavy metals in the fabrics of the same ones in levels that represented any risk to his/her development. PD's in natura made available Mn to the cultivated plants, in amounts comparable to liberated them to SM-PD, OM-PD and the SM-COM. It is ended that, so much PD's in natura, as for the materials produced starting from PD's (SM-PD and OM-PD) they were efficient as sources of Mn to the soy plants and eucalyptus cultivated vegetation home. The obtained results indicate that the use of PD can be viable, as source of Mn for the industry of fertilizers.
O Pó de Despoeiramento (PD) é um resíduo sólido industrial proveniente dos processos da metalurgia do minério de manganês (Mn). Este material contém concentração significativa de Mn. A unidade industrial responsável pela produção de aproximadamente 2000 toneladas/mês de PD s é a Rio Doce Manganês (RDM), empresa do grupo da Companhia Vale do Rio Doce (CVRD), atualmente, Companhia VALE. Os PD s foram caracterizados quimicamente (etapa 1) e em seguida, avaliados como fonte de Mn para plantas de soja (Glicine max L.), da variedade Conquista e plantas de eucalipto (Eucalyptus globulus), do híbrido Urograndis, em casa de vegetação (etapa 2). Para a etapa 1 da pesquisa, foram escolhidos dez materiais de PD s coletados nas unidades industriais de Barbacena/MG, Ouro Preto/MG, Salvador/Ba e Corumbá/MS, respectivamente. As amostras de PD s foram analisadas segundo os procedimentos de lixiviação e solubilização de resíduos sólidos (ABNT NBR 10005 e 10006, 2004). Os teores de metais dos PD ́s foram quantificados por meio de espectrometria em emissão ótica com plasma acoplado induzido (ICP-OES) e espectrometria por absorção atômica (AAS). Em seguida, foi realizado o experimento em casa de vegetação (etapa 2), utilizando-se amostras de dois Latossolos (LVa), um argiloso (TG) e outro arenoso (TM), das cidades Viçosa/MG e Três Marias/MG, respectivamente. Como fontes de Mn, foram avaliadas amostras dos PD s in natura proveniente de cinco unidades industriais da RDM/CVRD e dois fertilizantes preparados a partir dos PD s: o sulfato de manganês (SM-PD) e o óxido de manganês (OM- PD). Foi incluído como tratamento controle um outro fertilizante sulfato de manganês comercial (SM-Com). Os materiais foram aplicados em quantidade equivalente às doses 0,0; 2,5; 5,0; 7,5 e 30,0 mg kg -1 de Mn, com exceção do OM-PD aplicado apenas nas doses 2,5 e 30,0 mg kg -1 de Mn. As plantas foram coletadas e secas em estufas com ventilação forçada de ar quente. Em seguida, determinaram-se os teores de P, Mn, Zn, Cu, Fe, Cr, Ni, Ti e Se, com ixextração de ácido nítrico e perclórico (3:1), por espectrometria de emissão óptica com plasma acoplado induzido (ICP-OES). Os dados foram submetidos à análise de regressão linear múltipla, avaliando-se a produção da massa de matéria seca, concentração e acúmulo dos elementos químicos na parte aérea e raízes das plantas de soja e eucalipto. Os resultados obtidos com os extratos solubilizados (etapa 1), apresentaram teores de As, Pb, Se, Hg, Mn, Fe e Al em valores acima dos limites máximos estabelecidos pela ABNT (Anexo G, ABNT NBR 10004, 2004). Por outro lado, os teores de metais encontrados nos extratos lixiviados não resultaram em valores elevados, segundo a referida norma. Não houve resposta significativa com as fontes de Mn aplicadas nos tratamentos, no que diz respeito à produção da massa de matéria seca das plantas de soja e eucalipto (etapa 2). Não houve também, acúmulo de metais pesados nos tecidos das mesmas em níveis que representassem qualquer risco ao seu desenvolvimento. Os PD s in natura disponibilizaram Mn às plantas cultivadas, em quantidades comparáveis às liberadas ao SM-PD, OM- PD e o SM-Com. Conclui-se que, tanto os PD s in natura, quanto aos materiais produzidos a partir dos PD s (SM-PD e OM-PD) foram eficientes como fontes de Mn às plantas de soja e eucalipto cultivadas em casa de vegetação. Os resultados obtidos indicam que o uso do PD pode ser viável, como fonte de Mn para a indústria de fertilizantes.
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Brion, Jean-Marc. "Contribution à l'étude des mécanismes de formation de couches de transfert non métalliques sur un outil en coupe continue d'aciers de décolletage a inclusions contrôlées." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL043N.

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On présente l'étude des mécanismes de formation des couches de transfert sélectif (CTS) de sulfures de manganèse sur un outil de coupe a partir des seules inclusions contenues de façon contrôlée dans l'acier usiné. On montre que la stabilité de la CTS sur l'outil correspond à un équilibre dynamique entre sa vitesse d'alimentation et sa vitesse d'érosion avec l'adhérence inclusion/outil comme mécanisme clé gouvernant cette stabilité. Cette adhérence est liée à l'affinité chimique entre l'élément métallique actif présent à la surface de l'outil (Zr, ti) et le soufre des inclusions de l'acier exprimée en termes d'enthalpie de formation du sulfure correspondant. Par spectroscopie des électrons Auger en mode balayage, nous avons réussi à comprendre le mécanisme le plus probable d'accrochage des sulfures de manganèse sur des outils mixtes composes de carbures WC et tic. A l'endroit des carbures simples de type wc, on assiste a une usure diffusionnelle classique qui se traduit par leur dissociation et évacuation continuelles. En revanche, l'élément de transition (ti) dans les carbures actifs également dissociés forme, avec les inclusions de l'acier usine, une fine couche d'oxysulfure stable, et certainement adhérente, qui interrompt cette dissociation et constitue une base d'accrochage pour d'autres sulfures. Dans la même logique, on constate que la continuité chimique du compose actif à la surface de l'outil (outils revêtus) favorise encore la stabilité des CTS. Bien que d'importance cruciale, la maitrise compositionnelle de la surface de l'outil ne peut avoir qu'un rôle de révélateur du flux d'alimentation en inclusions provenant du copeau. On montre le rôle capital qui revient au contrôle inclusionnaire en matière de composition des inclusions principalement mais aussi en termes de morphologie et de déformabilité relative inclusion/matrice
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Romero, Manzanares Antonio Domingo. "Lixiviación de manganeso del concentrado plomo-plata para la producción de sulfato de manganeso." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/3784.

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El concentrado de plomo-plata que es materia de investigación tiene un contenido de plata de 210.7 oz/tc, 16.20% de plomo y 18.7 % manganeso, el cual es difícil comercializar. El objetivo de esta investigación consiste en minimizar el contenido de manganeso del concentrado de plomo-plata, por ser este elemento que diluye los contenidos de plomo y plata, perjudicando la comercialización del concentrado mencionado. El proceso de disminución de manganeso de un concentrado plomo-plata se puede adaptar a minerales con el mismo problema, alto contenido de manganeso (18.7%). Como subproducto de la lixiviación de manganeso se obtiene, una solución un sulfato de manganeso la cual mediante procesos se obtendrá sulfato de manganeso monohidratado. En la etapa de flotación se corrieron 4 pruebas iniciales que constan de tres etapas, la primera etapa fue a una lixiviación a pH=4, le segunda etapa la flotación del residuo de lixiviación de la etapa anterior y la tercera etapa la lixiviación del concentrado de flotación de la etapa anterior a un pH=2. Se obtuvo como resultado un concentrado de plomo de 20% y un contenido de plata de 259.33 oz/tc. En vista que con este procedimiento no dio los resultados esperados se procedió a cambiar el diagrama de flujo. La primera etapa fue a una lixiviación a pH=4, la segunda etapa la lixiviación del residuo anterior a un pH=2 y la tercera etapa la flotación del residuo de lixiviación de la etapa anterior. Bajo estas condiciones es posible lixiviar el 95% de manganeso con una pérdida de peso total de 30% y un consumo de H2SO4 de 486 kg/t. Después de realizar varias pruebas con este nuevo diagrama de flujo se obtuvo un concentrado hasta de 27% Pb, el contenido de plata es de 326 oz/tc y un contenido de manganeso de 1.81 %. Realizadas las pruebas de lixiviación se prosigue a la neutralización de la solución de lixiviación, utilizando el concentrado de plomo-plata. En esta prueba se trabajó con porcentajes de sólidos de 10%, 20%, 30%, 40% y 50% para determinar cuál es la adecuada para lograr precipitar los elementos no deseables como el fierro, el plomo, el zinc entre otros y además la de enriquecer de manganeso a la solución. En un tiempo de neutralización de 3 horas con un porcentaje de solido del 20% se obtuvo la disminución de los valores hasta 49ppm de zinc, 1 ppm de fierro y 9 ppm de plomo, a su vez la concentración de manganeso aumento hasta 89900 ppm. En la etapa de purificación de solución neutralizada, se usó sulfuro de sodio en una cantidad de 0.064 gr, disminuyendo el contenido de plomo en 0.2 ppm y el zinc en 0.2 ppm. Luego de esta etapa de purificación de la solución lixiviante, se procedió a la cristalización de la solución mediante la evaporación, se toma una muestra de un litro y se empezó el proceso de evaporación a una temperatura de 70 °C. En esta etapa empiezan a aparecer los primeros cristales que son los de sulfato de calcio por lo cual se procede a filtrar la solución y retirar los cristales formados. Se toma una muestra de este residuo y da un contenido de calcio de 22.17%. Posteriormente la solución se dispone a calentar para proseguir con la etapa de evaporación de la solución a una temperatura de 50 °C y la formación de los cristales de sulfato de manganeso monohidratado. Al cabo de todo este proceso se obtiene 180 gr de sulfato de manganeso monohidratado, con una concentración de manganeso de 32.2%, el sulfato de manganeso monohidratado es un elemento adicional vendible y usado en la industria agrícola como fertilizante.
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Bouchard, Michel. "Evaluation des Capacités de la Microscopie Raman dans la Caractérisation Minéralogique et physicochimique de Matériaux Archéologiques : Métaux, Vitraux & Pigments." Phd thesis, Museum national d'histoire naturelle - MNHN PARIS, 2001. http://tel.archives-ouvertes.fr/tel-00131055.

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L'évaluation des capacités non-destructives de la Microscopie Raman en Archéologie est la ligne directrice de ce travail de recherche. Trois domaines ont été choisis afin d'estimer les avantages et les limites d'une telle technique d'analyse ; il s'agit de l'étude 1) des pigments issus des peintures préhistoriques, 2) des produits de corrosion de métaux d'origine archéologique et 3) des vitraux (le verre, la coloration et l'altération). Les résultats plus ou moins « positifs » selon les domaines, mettent en
évidence, par exemple, les capacités de la MR à distinguer les oxydes de Mn du carbone dans les peintures noires préhistoriques ou encore, la facile identification de l'hématite ; ils permettent également de distinguer assez facilement les différentes phases
d'altérations existantes sur les métaux corrodés (sulfates, oxydes, chlorures...). Enfin, si l'étude du verre et des colorations en surface offrent des résultats assez positifs (complexes de type : PbCrO4.PbO), l'identification de la coloration dans la masse des vitraux par des colloï des métalliques reste plus complexe. La fluorescence constitue
également un des désavantages certain de cette méthode. Toutefois, la réussite de cette technique, dans le domaine de l'archéometrie, où elle est encore peu appliquée, permet d'entrevoir un avenir prospère et une utilité incontestable pour les archéologues,
restaurateurs et conservateurs.
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Rebelo, Carolini Machado. "Processo de obtenção do sulfato de manganês a partir do minério de manganês." reponame:Repositório Institucional da UFSC, 2013. https://repositorio.ufsc.br/xmlui/handle/123456789/123091.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2013.
Made available in DSpace on 2014-08-06T17:47:06Z (GMT). No. of bitstreams: 1 326352.pdf: 1018473 bytes, checksum: 7c9c533f96bc293bb90ce040a9052b1d (MD5) Previous issue date: 2013
O manganês foi descoberto em 1774 pelo sueco Johan GottliebGahn, através da redução com dióxido de carbono. Sua principal aplicação é na fabricação de ligas metálicas, na qual é um agente removedor de enxofre e oxigênio e outros usos de seus principais compostos incluem o dióxido de manganês na confecção de pilhas secas e o permanganato de potássio em laboratório como agente oxidante em várias reações químicas. É o 12° elemento mais abundante da crosta terrestre e seus principais minérios são a pirolusita e a rodocrosita. As maiores jazidas estão localizadas na África do Sul, Brasil, Austrália, Índia, China e Gabão. No território brasileiro os estados do Pará, Minas Gerais e Mato Grosso do Sul são as principais regiões de mineração. O sulfato de manganês é o composto inorgânico com fórmula MnSO4. Este sólido incolor e deliquescente é um sal de manganês comercialmente significativo. Aproximadamente 260 milhões de kg/ano foram produzidos mundialmente em 2005. Ele é percursor para o metal manganês e muitos compostos químicos. Solos deficientes de Mn são remediados com este sal. Desta forma, esta pesquisa objetivou a obtenção do sulfato de manganês a partir do minério de manganês. O trabalho experimental constituiu primeiramente na caracterização do minério pelo método de difração de raios X (DRX). Na análise de caracterização foi verificado que o minério continha 32% de Óxido de Manganês (MnO). Para obtenção do sulfato de manganês foi desenvolvida uma rota utilizando ácido sulfúrico para a formação do sal a 90°C + 5°C. A variável de processo foi o tempo (60, 90 e 120 minutos). A solução obtida foi filtrada com uma bomba a vácuo. Após a filtragem foi adicionado álcool etílico à solução para que ocorresse uma maior precipitação dos cristais de sulfato de manganês. Uma segunda filtração foi realizada obtendo assim o sulfato de manganês purificado.

Abstract : Manganese was discovered in 1774 by Swedish Johan Gottlieb Gahn , by reducing its oxide carbonate . Its main application is in the manufacture of alloys , which is an agent remover sulfur and oxygen and other uses of their main compounds include manganese dioxide in the manufacture of dry cell batteries and potassium permanganate in the laboratory as an oxidizing agent in various chemical reactions . It is the 12th most abundant element in the earth's crust and its main ores are pyrolusite and rhodochrosite . The largest deposits are located in South Africa , Brazil , Australia, India , China and Gabon in the territory Brazilian states of Pará , Minas Gerais and MatoGrosso do Sul are the main mining regions . The manganese sulfate is the inorganic compound with the formula MnSO4 . This colorless, deliquescent solid manganese salt is a commercially significant. Approximately 260 million kg / year were produced worldwide in 2005 . It is a precursor to manganese metal and many chemical compounds. Mn deficient soils are remediated with this salt. Thus , this study aimed to obtain the manganese sulfate from manganese ore . The experimental work consisted primarily in the characterization of the residue by the method of X-ray diffraction ( XRD ) . In characterization analysis it was found that the residue contained 32% of manganese oxide ( MnO ) . To obtain manganese sulphate route was developed using sulfuric acid to form the salt at 90 ° C ± 5 ° C. The process variable was the time (60, 90, and 120 minutes). The obtained solution was filtered with a vacuum pump. After filtering ethyl alcohol was added to the solution for precipitation to occur more of manganese sulfate crystals . A second filtration was performed thus obtaining purified manganese sulfate .
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Church, Christopher J. "The structural, thermal, and magnetic properties of manganese silicon sulfide." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/6806.

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$\rm Mn\sb2SiS\sb4$ is a synthetic Olivine in which we have discovered an exceptional temperature dependent magnetic behavior that may lead to interesting applications. A state of spontaneous magnetization was found to exist in this material, but only between 83 and 86.5 K. In order to explain this unusual magnetic phenomena, polycrystalline samples of $\rm Mn\sb2SiS\sb4$ were first prepared from the elements and studied by SQUID magnetometry in low fields, by X-ray and neutron diffraction, by electron spin resonance (ESR) and by specific heat calorimetry. This research, in which the author was a member of a team, is described. His specific contributions include among others; the debugging and extension of some of the computer programs used to analyze the neutron diffraction results, the interfacing of the Bruker ESR spectrometer to a IBM compatible computer and the development of the computer progams to acquire the resonance curves and analyze the line spectra, the analysis of the ESR results, the assembly of parts of an apparatus and the development of a procedure to measure the specific heat of small samples in the 77 to 150 K range as well as some preliminary measurements on a sample of $\rm Mn\sb2SiS\sb4.$ These contributions are emphasized in this thesis. (Abstract shortened by UMI.)
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Edwards, Jared D. "REMOVAL OF MANGANESE FROM AN ALKALINE MINE DRAINAGE USING A BIOREACTOR WITH DIFFERENT ORGANIC CARBON SOURCES." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/522.

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The treatment of Mn and SO42- contaminated mine drainage via a sulfate reducing bioreactor is expected to result in near-permanent immobilization of significant amounts of Mn and a portion of the sulfates within the matrix. This study tested several different combinations of organic amendments and inorganic substrates in an attempt to optimize sulfate reducing conditions and Mn removal capacity. Five different organic carbon sources, including corn mash, wood mulch, biosolids, soybean oil, and sorghum syrup in combination with five different inorganic substrates, including creek sediment, marble and limestone chips, polished gravel, and sand were tested in batch experiments. Results indicate a widely Mn variant removal potential among the treatments, ranging from 35% for soybean oil to 97% for the mulch mixture, with respective Eh ranges of +60 mV and -320 mV. Sulfate removal ranged from less than 10% to 85%. The most favorable combinations were tested in small scale bioreactors under dynamic conditions. Greater than 90% of Mn and 70% of sulfate was removed over a 65 day test period. Results indicate Mn removal mechanisms include sulfide, oxide, and carbonate formation and simple sorption and SO42- removal mechanisms of sulfide gas evolution, gypsum and MnS precipitation, and anion sorption/cation bridging.
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Trupiano, Vito. "EVALUATION OF OXIDIZED MEDIA FILTRATION PROCESSES FOR THE TREATMENT OF HYDROGEN SULFIDE IN GROUNDWATER." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3026.

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This study evaluated alternative sulfide treatment processes for potable water systems that rely on groundwater supplies. Research for this study was conducted at the Imperial Lakes (IL) and Turner Road (TR) water treatment plants (WTPs) in Polk County, Florida. These WTPs are in the process of refurbishment and expansion, and will require the installation of a new groundwater well. The IL and TR WTPs both rely upon groundwater sources that contain total sulfide at concentrations ranging from 1.4 to 2.6 mg/L. Sulfide is a concern because if left untreated it can impact finished water quality, corrosivity, create undesirable taste and odor, and oxidize to form visible turbidity. For this reason, the raw water will require treatment per Florida Department of Environmental Protection (FDEP) "Sulfide Rule" 62-555.315(5)(a). This rule does not allow the use of conventional tray aeration (currently in use at the IL and TR WTPs) for wells that have significant total sulfide content (0.6 to 3.0 mg/L). This research was commissioned because the potential water treatment method identified in the Sulfide Rule (i.e. forced-draft aeration) would not adequately fit within the confines of the existing sites and would pose undue burden to neighboring residents. In addition, an effective sulfide treatment process was desired that offered a low profile, did not necessitate the need for additional complex chemical feed systems, minimized the extent of electrical infrastructure upgrades, and was inexpensive to construct and operate. To meet these goals, several alternative technologies were evaluated at the desktop and bench-scale; these included anion exchange, various oxidation methods, and alternative media filtration processes. From that effort, several processes were selected for evaluation at the pilot scale: bleach (NaOCl) oxidation preceding electromedia filtration; manganese (IV) oxide (MnO2) filtration continuously regenerated with bleach; and ferrate (Fe(VI)) oxidation. Electromedia and MnO2 filtration were shown to be effective for total sulfide treatment. Both processes reduced total sulfide content to below detection levels (< 0.1 mg/L) for groundwater supplies containing as much as 2.6 mg/L of total sulfide. The use of bleach oxidation ahead of media filtration also produced finished water with low turbidity (< 1.0 NTU) as compared to conventional tray aeration and chlorination processes (6-16 NTU, as observed in this study). It was determined that the media filtration approach (electromedia and MnO2) was effective for sulfide treatment and met the County's site objectives established at the outset of the project. Ferrate was also shown to reduce total sulfide content to below detection levels (< 0.1 mg/L) for groundwater supplies containing as much as 2.6 mg/L of total sulfide. An opinion of probable capital costs for installing a sulfide oxidation/filtration process at either the Imperial Lakes or Turner Road WTP was estimated to range from roughly $830,000 to $1,100,000. That equates to a $/kgal capital cost of $0.10 to $0.32 (at 8% for 20 years). An opinion of annual probable bleach chemical costs was estimated to range from $3,500 to $9,800 for the IL WTP and $3,500 to $5,800 for the TR WTP.
M.S.Env.E.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Environmental Engr MSEnvE
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Collins, Sunniva Refsnes. "Forging effects on manganese sulfide inclusions as fatigue initiation sites in AISI 4140 steel." Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1057696631.

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Eames, Douglas J. "Direct causticizing of sodium carbonate with manganese oxide." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/7026.

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Books on the topic "Sulfate de manganèse"

1

United States International Trade Commission. Manganese sulfate from the People's Republic of China. Washington, DC: U.S. International Trade Commission, 1995.

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Kokin, A. V. Alabandin I︠A︡kutii--novyĭ mineralʹnyi tip promyshlennogo orudenenii︠a︡ margant︠s︡a. Rostov-na-Donu: ZAO "Rostizdat", 2011.

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Danielewski, Marek. Kinetyka i mechanizm siarkowania manganu oraz struktura defektów i własności transportowe siarczku manganawego. Kraków: Akademia Górniczo-Hutnicza im. S. Staszica w Krakowie, 1985.

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Manganese Sulfate from the People's Republic of China: An International Trade Investigation. Diane Pub Co, 2004.

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K, Rajendran, and Veeramanikandasamy T. Structural, Optical, Electrical and Magnetic Properties of Synthesized Manganese Sulfide Nanocrystals: A Study on the Influence of Process Parameters on Synthesis of MnS Nanocrystals. Independently Published, 2019.

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Book chapters on the topic "Sulfate de manganèse"

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Teng, Yujiang, Fenglan Han, Shizheng Zhao, and Yaguang Wang. "Preparation of Manganese Sulfate by Reduction of Electrolytic Manganese Mud with Corn Straws." In Springer Proceedings in Energy, 627–36. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0158-2_64.

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Arends, B. G., and S. Eenkhoorn. "The Influence of Manganese on the Oxidation of Sulfite in Dew Water." In Mechanisms and Effects of Pollutant-Transfer into Forests, 231–38. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1023-2_26.

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Minami, T., T. Nishiyama, S. Tojo, H. Nanto, and S. Takata. "An Electroluminescent Device Using Sintered Manganese-Doped Zinc Sulfide Phosphor Ceramics." In Springer Proceedings in Physics, 119–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-93430-8_24.

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Patel, Bhupendra R., and Philip A. Vella. "Oxidative and Catalytic Removal of Hydrogen Sulfide from Spent Caustic Liquors by Manganese Compounds." In Emerging Technologies in Hazardous Waste Management V, 163–73. Washington, DC: American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0607.ch014.

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Luther, George W., and Andrew S. Madison. "Determination of Dissolved Oxygen, Hydrogen Sulfide, Iron(II), and Manganese(II) in Wetland Pore Waters." In Methods in Biogeochemistry of Wetlands, 87–106. Madison, WI, USA: American Society of Agronomy and Soil Science Society of America, 2015. http://dx.doi.org/10.2136/sssabookser10.c6.

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Govorov, I. N., L. F. Simanenko, and V. P. Simanenko. "Pacific Co-Pt-rich manganese crusts and auriferous sulfide ores as a result of water-rock interaction." In Water-Rock Interaction, 707–9. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203734049-175.

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Minami, T., T. Miyata, K. Kitamura, H. Nanto, and S. Takata. "Low Voltage Driven Electroluminescent Devices with Manganese-Doped Zinc Sulfide Thin Film Emitting Layer Grown on Insulating Ceramics by Metal Organic Chemical Vapor Deposition." In Springer Proceedings in Physics, 306–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-93430-8_61.

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"Manganese(II) Sulfite." In Sulfites, Selenites & Tellurites, 248–51. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-08-032517-0.50019-8.

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Berner, Robert A. "Atmospheric O2 over Phanerozoic Time." In The Phanerozoic Carbon Cycle. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195173338.003.0008.

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The chemical reactions that affect atmospheric O2 on a multimillion-year time scale involve the most abundant elements in the earth’s crust that undergo oxidation and reduction. This includes carbon, sulfur, and iron. (Other redox elements, such as manganese, are not abundant enough to have an appreciable effect on O2.) Iron is the most abundant of the three, but it plays only a minor role in O2 control (Holland, 1978). This is because during oxidation the change between Fe+2 and Fe+3 involves the uptake of only one-quarter of an O2 molecule, whereas the oxidation of sulfide to sulfate involves two O2 molecules, and the oxidation of reduced carbon, including organic matter and methane, involves between one and two O2 molecules. The same stoichiometry applies to reduction of the three elements. Because iron is not sufficiently abundant enough to counterbalance its low relative O2 consumption/release, the iron cycle is omitted in most discussions of controls on atmospheric oxygen. In contrast, the sulfur cycle, although subsidiary to the carbon cycle as to its effect on atmospheric O2, is nevertheless non-negligible and must be included in any discussion of the evolution of atmospheric O2. In this chapter the methods and results of modeling the long-term carbon and sulfur cycles are presented in terms of calculations of past levels of atmospheric oxygen. The modeling results are then compared with independent, indirect evidence of changes in O2 based on paleobiological observations and experimental studies that simulate the response of forest fires to changes in the levels of O2. Because the sulfur cycle is not discussed anywhere else in this book, it is briefly presented first. The long-term sulfur cycle is depicted as a panorama in figure 6.1. Sulfate is added to the oceans, via rivers, originating from the oxidative weathering of pyrite (FeS2) and the dissolution of calcium sulfate minerals (gypsum and anhydrite) on the continents. Volcanic, metamorphic/hydrothermal, and diagenetic reactions add reduced sulfur to the oceans and atmosphere where it is oxidized to sulfate. Sulfur is removed from the oceans mainly via formation of sedimentary pyrite and calcium sulfate.
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REAMES, J. P. "Cathodoluminescence of Evaporated Zinc Sulfide-manganese Films." In Vacuum Technology Transactions, 215–17. Elsevier, 2013. http://dx.doi.org/10.1016/b978-1-4831-9852-1.50047-5.

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Conference papers on the topic "Sulfate de manganèse"

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Boren, Richard M., Charles F. Hammel, and Mark R. Bleckinger. "Multi-Pollution Removal System Using Oxides of Manganese." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52081.

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Pending legislation suggests there will be a need for increased removal of NOx, SO2, Hg (Mercury) and PM 2.5 from coal-fired power plants. Current commercial technologies only handle one of these pollutants so several different technologies must be combined to remove all of these pollutants. The Pahlman™ Process developed by Enviroscrub Technologies removes NOx, SO2 and Hg in one step. The Pahlman™ Process is a sorbent-based technology, which utilizes a proprietary Oxides of Manganese compound to remove SO2, NOx and Hg. The sorbent is spray-dried into the exhaust duct downstream of the current particulate control device. Spray drying is used to control the particle size (40 micron mean) and increases the surface area of the particle (∼300 m2 /gram). The sorbent is collected in a fabric filter baghouse, which serves two purposes: (1) it captures the entrained sorbent and (2) provides additional residence time for gas-solid contact between the sorbent and the target pollutants. The loaded sorbent is removed from the baghouse and routed to regeneration. Sorbent regeneration occurs in an aqueous solution under temperature and pressure while the solution is maintained in the proper pH and Eh ranges. The reacted manganese is oxidized back to its starting state and sulfate and nitrate byproduct compounds are produced. The insoluble oxides of manganese are then filtered out of the solution and returned to the spray-dryer for re-use. The soluble sulfate and nitrate compounds are separated and the nitrate by-products are sold as fertilizer. The sulfates are further processed and re-used in the regeneration process with excess sulfate by-products sold as fertilizer or used to produce sulfuric acid. Testing over the last three years has resulted in consistent SO2 removal of over 99% and NOx removal of greater than 95%. Testing performed in June 2003 at DTE Energy’s River Rouge Power Station Unit#3 in Detroit, Michigan showed removal rates of >99% for SO2, >98% for NOx and 97% for oxidized Mercury (Hg2+). Mercury testing was performed by the Energy and Environmental Research Center (EERC) and paid for by DTE Energy and the DOE. Testing performed in December 2003 through January 2004 at Minnesota Power’s Boswell Energy Center Unit#4 in Cohasset, Minnesota showed removal rates of >98% for SO2, >94% for NOx and 99.2% for elemental (Hg0) and 94% for total Mercury (HgT).
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Kusumaningrum, Retno, Siti Astari Rahmani, Wahyu Bambang Widayatno, Agus Sukarto Wismogroho, Dwi Wahyu Nugroho, Syahrizal Maulana, Nurul Taufiqu Rochman, and M. Ikhlasul Amal. "Characterization of Sumbawa manganese ore and recovery of manganese sulfate as leaching products." In PROCEEDINGS OF THE INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2017): Metallurgy and Advanced Material Technology for Sustainable Development. Author(s), 2018. http://dx.doi.org/10.1063/1.5038324.

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Pathan, Habib M., Sampat S. Kale, and Vishal K. Pandit. "Deposition of manganese sulfide and cadmium doped manganese sulfide thin films by M-CBD." In INDIAN VACUUM SOCIETY SYMPOSIUM ON THIN FILMS: SCIENCE AND TECHNOLOGY. AIP, 2012. http://dx.doi.org/10.1063/1.4732441.

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Zou, Xing, Xueshan Li, and Tengfei Han. "Deep Removal of Lead Ions from Manganese Sulfate Solution with High Concentration." In 2015 International Conference on Advanced Material Engineering. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814696029_0019.

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Tailor, Jiten P., Ankurkumar J. Khimani, Sunil H. Chaki, and M. P. Deshpande. "Thermal decomposition study of manganese sulfide (MnS) nanoparticles." In 2ND INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5032532.

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Chenli, Zefang, Fang Lian, and Laijun Ma. "A novel method to remove Ca2+ and Mg2+ impurities from manganese sulfate solution." In 2016 5th International Conference on Measurement, Instrumentation and Automation (ICMIA 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icmia-16.2016.20.

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SAVCHUK, A. I., V. I. FEDIV, I. M. GRYGORASHCHUK, S. A. IVANCHAK, G. Yu. RUDKO, E. G. GULE, and I. P. VORONA. "PHOTOLUMINESCENCE AND EPR SPECTRA OF MANGANESE-DOPED CADMIUM SULFIDE NANOPARTICLES." In Proceedings of the International Conference on Nanomeeting 2009. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814280365_0068.

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Hossein Banejad, Reza Pirtaj hamedani, Navab Daneshi, and Mehdi Mokari. "Removal of iron and manganese existing in water in presence of sulfate by rapid sand filter." In 21st Century Watershed Technology: Improving Water Quality and Environment Conference Proceedings, 29 March - 3 April 2008, Concepcion, Chile. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2008. http://dx.doi.org/10.13031/2013.24315.

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Kandasamy, N., S. Saravanan, and Deepak Ranjan Nayak. "Synthesis and characterization of mercury doped and un-doped manganese sulfide nanostructure." In International Conference on Nanoscience, Engineering and Technology (ICONSET 2011). IEEE, 2011. http://dx.doi.org/10.1109/iconset.2011.6167922.

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Konishi, Yasuhiro, Norizoh Saitoh, and Takashi Ogi. "A New Biohydrometallurgical Method for Processing of Deep-Sea Mineral Resources." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79237.

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Abstract:
This paper concentrates on the application of a biohydrometallurgical method for processing deep-sea mineral resources. Bioleaching technologies developed for terrestrial sulfide minerals now can be applied for metal extraction from deep-sea hydrothermal sulfides. However, little attention has been given to the bioleaching of terrestrial oxide minerals. A potentially attractive bioleaching system using the Fe(III)-reducing bacterium has recently been proposed for manganese crusts and nodules. Experimental results obtained from these systems demonstrate that bioleaching is an economical and environmentally friendly processing avenue to recover valuable metals from deep-sea mineral resources.
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