Relevant bibliographies by topics / Zinc sulfure

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Academic literature on the topic 'Zinc sulfure'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Zinc sulfure"

1

Lemoine, P., A. Tomas, T. Vovan, and M. Guittard. "Structure du sulfure de thulium et de zinc ZnTm2S4." Acta Crystallographica Section C Crystal Structure Communications 46, no. 3 (March 15, 1990): 365–68. http://dx.doi.org/10.1107/s0108270189007936.

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Pang, Wen Hao, Quan Jun Liu, and Peng Ding. "Separation Test of Copper-Zinc-Sulfur Mixed Concentrate in Kazakhstan." Advanced Materials Research 683 (April 2013): 565–68. http://dx.doi.org/10.4028/www.scientific.net/amr.683.565.

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The mixed concentrate which contains 9.97% Cu, 9.25% Zn and 38.62% S is selected from polymetallic sulfide ores in Kazakhstan. The difficulty of study is the effective separation of copper and zinc. We used the process of grinding the mixed concentrate, and then carried out separation flotation of copper, zinc and sulfur according to the properties of the mixed concentrate. Considering the poor effect of single depressant, we used the combination of zinc sulfate and sodium sulfite as the depressants for separating copper. The collector of copper floatation is 432-xanthate and the activator of zinc floatation is copper sulfate. As a result, we obtained satisfying selecting targets through closed-circuit test: The grade of copper is 21.91% and zinc is 6.95% in the copper concentrate. The copper recovery is 87.64%. The grade of zinc is 40.42% and recovery is 65.80% in zinc concentrate. The sulfur recovery is 46.39% in sulfur concentrate.
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Solovyeva, G. V., E. B. Kolmachikhina, and S. V. Mamyachenkov. "Thermodynamic analysis of zinc sulfide dissolution stoichiometry in sulfuric acid solution with oxygen." Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), no. 4 (August 14, 2020): 22–28. http://dx.doi.org/10.17073/0021-3438-2020-4-22-28.

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A thermodynamic study of zinc sulfide high temperature oxidation leaching was conducted. Several processes can run simultaneously while metal sulfides are dissolved by oxidants in acidic solutions. Thermodynamic calculations were made using stoichiometric equations with equal oxidant consumption in order to identify the proportion of potential reactions. Moreover, stoichiometric coefficients were chosen in such a way as to reagents could exchange 1 mole of electric charge. This approach ensures a comparison of different oxidants in terms of their effectiveness in sulfides leaching. Thermodynamic analysis results obtained agree with experimental data confirming that oxidizing reactions with the formation of sulfur and sulfate ions prevail in zinc sulfide dissolution in sulfuric acid solutions under the oxygen effect. The effect of oxygen consumption and initial sulfuric acid concentration on the proportion of these reactions and equilibrium concentration of zinc cations in the solution was studied. Thermodynamic analysis showed that if the acid concentration is insufficient and limits the maximum progress of zinc sulfide oxidation with sulfur formation, oxygen is also consumed for the oxidation reaction with the formation of sulfate ions spending oxygen less effective due to 4 times less zinc cations passing to the solution. Thermodynamic calculations made it possible to find out the optimal proportions of oxygen consumption and initial sulfuric acid concentration to achieve the maximum zinc equilibrium concentration in the solution with more effective oxidant consumption without any labor-intensive experiments. The equilibrium concentration of zinc cations in the solution is in direct proportion to the initial acid concentration, and zinc cation formation is in direct proportion to oxygen consumption at the optimal acid concentration.
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Benmir, Abdelkader, and Mohamed Salah Aida. "Simulation d'une Cellule Solaire en Couche Mince à Base de Cuivre-Zinc-Étain Sulfure / Séléniure Cu2ZnSn(S,Se)4." حوليات العلوم و التكنولوجيا 7, no. 1 (May 2015): 12–23. http://dx.doi.org/10.12816/0040256.

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Yang, Li Jiao, Nan Chun Chen, Xia Ping Zhong, Jun Gao, Yao Xiu Lang, Zhen Feng Wang, Chang Miao Liu, and Zhao Yang Wu. "Factors on Leaching Zinc and Copper from Zinc Leach Residue." Key Engineering Materials 633 (November 2014): 169–72. http://dx.doi.org/10.4028/www.scientific.net/kem.633.169.

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It is found that cuprous sulfite, zinc sulfate and zinc sulfide were the main phases of copper and zinc in zinc leach residue, through analyzing its composition and phase characteristics by XRF and XRD. The method that cooperate sulfuric acid leaching with oxidant was chosen. 60 g/L H2SO4 at 60 °C for 2 h with 4% KMnO4 and liquid/solid ratio of 5..1, 84.29 % of Cu and 92.02 % of Zn are extracted. The ion concentration of copper and zinc are tested by UV-VIS spectrophotometer and EDTA titration respectively. The results show that the amount of acid is sufficient for leaching at the condition of 60 g/L H2SO4 and liquid/solid ratio of 5..1. At the same time, copper change from low valence into high valence after adding KMnO4 which strengthen the leaching, and the chemical reaction can reach balance at 60 °C for 2 h. This method has good extraction effect on copper and zinc.
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Owusu, George, and David B. Dreisinger. "Interfacial properties determinations in liquid sulfur, aqueous zinc sulfate and zinc sulfide systems." Hydrometallurgy 43, no. 1-3 (November 1996): 207–18. http://dx.doi.org/10.1016/s0304-386x(96)90002-x.

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Kolmachikhina, E. B., E. A. Ryzhkova, and D. V. Dmitrieva. "Sodium Lingo-Sulfonate and Sodium Dodecyl-Sulfate Mixtures Influence on Zinc Concentrate Pressure Leaching and Zinc Electro-Winning." Solid State Phenomena 299 (January 2020): 1121–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.1121.

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This paper is describing an investigation of sodium lingo-sulfonate and sodium dodecyl-sulfate mixtures influence on zinc concentrates high temperature oxidative pressure leaching and zinc electro-winning. For this purpose, surfactants concentration at leaching tests was varied from 200 to 800 mg∙l-1. It was established that the maximum zinc extraction (99 %) at leaching was achieved in the presence of mixture containing 800 mg∙l-1 lignosulfonate and 200 mg∙l-1 sodium dodecyl-sulfate. Therefore, this mixture can be recommended for high temperature oxidative pressure leaching of zinc concentrates. Sulfur-sulfide pellets formation also was observed at a low lingo-sulfonate concentration (200 mg∙l-1) in a mixture with sodium dodecyl-sulfate. This phenomenon can lead to emergency shut down of autoclave. It was observed that the mixture usage of 800 mg∙l-1 lignosulfonate and 200 mg∙l-1 sodium dodecyl-sulfate had no significant impact on zinc current efficiency, it was in the rage of 92-93 %. The mixture usage of 200 mg∙l-1 lignosulfonate and 600 mg∙l-1 sodium dodecyl-sulfate allowed to increase current efficiency up to 95 %. Increasing sodium dodecyl-sulfate concentration in mixtures with lignosulfonates leads to decrease of current efficiency, to formation of deep pores and defects on cathode zinc surface.
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Álvarez, María Luisa, José Manuel Fidalgo, Gabriel Gascó, and Ana Méndez. "Hydrometallurgical Recovery of Cu and Zn from a Complex Sulfide Mineral by Fe3+/H2SO4 Leaching in the Presence of Carbon-Based Materials." Metals 11, no. 2 (February 6, 2021): 286. http://dx.doi.org/10.3390/met11020286.

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Chalcopyrite, the main ore of copper, is refractory in sulfuric media with slow dissolution. The most commonly employed hydrometallurgical process for the oxidation of chalcopyrite and copper extraction is the sulfuric acid ferric sulfate system The main objective of the present work is to study the use of cheap carbon-based materials in the leaching of copper and zinc from a sulfide complex mineral from Iberian Pyrite Belt (IPB). The addition effect of commercial charcoal (VC) and two magnetic biochars (BM and HM) that were obtained by pyrolysis of biomass wastes was compared to that of commercial activated carbon (AC). The experimental results performed in this work have shown that the presence of carbon-based materials significantly influences the kinetics of chalcopyrite leaching in the sulfuric acid ferric sulfate media at 90 °C. The amount of copper and zinc extracted from IPB without the addition of carbon-based material was 63 and 72%, respectively. The highest amount of extracted zinc (>90%) was obtained with the addition of VC and AC in IPB/carbon-based material ratio of 1/0.25 w/w. Moreover, it is possible to recover more than 80% of copper with the addition of VC in a ratio 1/0.25 w/w. Moreover, an optimization of the properties of the carbon-based material for its potential application as catalyst in the leaching of metals from sulfide is necessary.
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Rother, Dagmar, Hans-Jürgen Henrich, Armin Quentmeier, Frank Bardischewsky, and Cornelius G. Friedrich. "Novel Genes of the sox Gene Cluster, Mutagenesis of the Flavoprotein SoxF, and Evidence for a General Sulfur-Oxidizing System in Paracoccus pantotrophusGB17." Journal of Bacteriology 183, no. 15 (August 1, 2001): 4499–508. http://dx.doi.org/10.1128/jb.183.15.4499-4508.2001.

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ABSTRACT The novel genes soxFGH were identified, completing the sox gene cluster of Paracoccus pantotrophus coding for enzymes involved in lithotrophic sulfur oxidation. The periplasmic SoxF, SoxG, and SoxH proteins were induced by thiosulfate and purified to homogeneity from the soluble fraction.soxF coded for a protein of 420 amino acids with a signal peptide containing a twin-arginine motif. SoxF was 37% identical to the flavoprotein FccB of flavocytochrome csulfide dehydrogenase of Allochromatium vinosum. The mature SoxF (42,832 Da) contained 0.74 mol of flavin adenine dinucleotide per mol. soxG coded for a novel protein of 303 amino acids with a signal peptide containing a twin-arginine motif. The mature SoxG (29,657 Da) contained two zinc binding motifs and 0.90 atom of zinc per subunit of the homodimer. soxH coded for a periplasmic protein of 317 amino acids with a double-arginine signal peptide. The mature SoxH (32,317 Da) contained two metal binding motifs and 0.29 atom of zinc and 0.20 atom of copper per subunit of the homodimer. SoxXA, SoxYZ, SoxB, and SoxCD (C. G. Friedrich, A. Quentmeier, F. Bardischewsky, D. Rother, R. Kraft, S. Kostka, and H. Prinz, J. Bacteriol. 182:4476–4487, 2000) reconstitute a system able to perform thiosulfate-, sulfite-, sulfur-, and hydrogen sulfide-dependent cytochrome c reduction, and this system is the first described for oxidizing different inorganic sulfur compounds. SoxF slightly inhibited the rate of hydrogen sulfide oxidation but not the rate of sulfite or thiosulfate oxidation. From use of a homogenote mutant with an in-frame deletion insoxF and complementation analysis, it was evident that the soxFGH gene products were not required for lithotrophic growth with thiosulfate.
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Marcaillou, C., M. Truchet, and R. Martoja. "Rôle des cellules S de l'épithélium caecal des Crustacés Isopodes dans la capture et la dégradation de protéines hémolymphatiques, et dans le stockage de catabolites (acide urique, sulfure de cuivre, phosphates)." Canadian Journal of Zoology 64, no. 12 (December 1, 1986): 2757–69. http://dx.doi.org/10.1139/z86-400.

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The S cells within the tubules of the hepatopancreas in the terrestrial isopod Oniscus asellus show numerous infoldings of the plasma membrane, which are involved in the uptake of hemolymph proteins, and a lysosomal apparatus that ensures the breakdown of the ingested material. The catabolic process leads to an accumulation of wastes in the form of spherocrystals. The most important components of the spherocrystals are uric acid, copper sulfide, which we consider to originate in the breakdown of hemocyanin monomers, alkaline-earth phosphates, which could be produced by enzymatic activities, and zinc. Moreover, in the marine species Ligia oceanica a silver salt (sulfide?) is stored in the spherocrystals. The S cells function as a storage type of excretory system. Their role is similar to urate cells in arthropods, nephrocytes in insects, and pore cells in molluscs. In the latter, the storage of silver is important in marine environments only.
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Dissertations / Theses on the topic "Zinc sulfure"

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Li, Jianquan. "Synthèse à température ambiante et caractérisation de sulfures inorganiques mésostructurés et microporeux." Mulhouse, 1997. http://www.theses.fr/1997MULH0484.

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Ce travail a pour but la synthèse de différents matériaux mésostructurés de type sulfure d'étain ou sulfure de zinc à température ambiante et en présence de tensioactifs. Deux nouveaux matériaux mésostructurés à base de sulfure d'étain ont été obtenus en modifiant la concentration de tensioactif cationique. Diverses caractérisations indiquent que dans la phase lamellaire les atomes d'étain sont tétracoordonnés à ceux de soufre et l'arrangement des couches inorganiques pourrait être semblable à celui observé dans le matériau Li2Si2O5. Par contre, dans la phase mésoporeuse, l'étain est en environnement hexacoordonné et la partie inorganique est de type SnS2-2H. Un mécanisme a été proposé pour la formation des deux composés mésostructurés. En présence de tensioactif neutre (dodécylamine) en milieu éthanol-eau, un composé ionique (C12H25NH3)4. [Sn2S6]. 2H2O a été formé. Sa structure consiste en des assemblages d'anions [Sn2S6]4- et de cations n-dodécylammonium (DDAH) comme entités principales. De plus des molécules d'eau occupent les interstices entre les anions et cations. Les cations n-dodécylammonium sont parallèles à la direction [001] avec les atomes d'azote en sens opposé. Tous les atomes d'azote sont protonés pour former des groupes ammonium. Le mécanisme de formation ferait intervenir un composé hybride dans une étape initiale, puis l'adaptation des densités de charge entre espèces organiques et inorganiques conduirait à former le composé ionique. Un composé mésoporeux à base de sulfure de zinc à été obtenu en milieu neutre. Celui-ci présente un caractère mésoporeux après élimination du tensioactif (cations C16TMA+). Cette mésoporosité (diamètre de pore ≃ 32 Å) a été révélée par volumétrie d'adsorption à l'azote. Des expériences d'EXAFS, au seuil K du Zn, ont indiqué que les atomes de zinc sont en environnement tétracoordonné d'atomes de soufre et la distance moyenne des premiers voisins soufre est de 2,34±0,02 Å. On peut constater qu'un ordre local existe pour des distances inférieures à 2,5 Å. Au delà de cette valeur, l'arrangement atomique devient désordonné, indiquant que la partie inorganique qui constitue les parois de ce composé mésoporeux est du sulfure de zinc amorphe. La formation de ce matériau mésoporeux résulterait de l'interaction S+X-I0.
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Galant, françois Magda. "Étude cinétique de la réaction exothermique d'oxydation du sulfure de zinc." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL037N.

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Les réactions gaz-solides ont été le plus souvent étudiées en conditions isothermes, alors que d'importants procédés pyrométallurgiques sont basés sur des réactions fortement exothermiques. Dans cette étude, nous nous sommes proposés d'analyser l'influence du dégagement de chaleur sur les différents processus physico-chimiques mis en jeu lors de la réaction d'oxydation du sulfure de zinc une réaction fortement exothermique. Les expériences d'oxydation de particules sphériques poreuses de ZnS ont été réalisées aux températures comprises entre 550 et 900°C et aux pressions partielles d'oxygène de 0,2, 0,56 et 1 atm. Le dispositif expérimental permet soit l'analyse thermogravimétrique, soit l'analyse thermique de la réaction d'oxydation. Les résultats obtenus sont interprétés et simulés en utilisant, d'une part, la loi des temps caractéristiques additifs, issue du modèle isotherme G. P. M. Modifié et d'autre part, par un modèle numérique qui prend en compte le caractère exothermique de la réaction. Nous montrons ainsi que, par suite du dégagement de chaleur, la réaction d'oxydation se déroule en régime diffusionnel mixte (2/3 interne, 1/3 externe) dans tous les cas étudiés. La particule en cours de réaction est le siège de forts gradients thermiques localisés dans la couche d'oxyde périphérique formée
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Mekki, Berrada Mohamed Kamal. "Synthèse d'agglomérats multi-échelles de sulfure de zinc par precipitation homogène." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2007. http://tel.archives-ouvertes.fr/tel-00340827.

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Le sulfure de zinc obtenu par précipitation homogène présente une grande importance dans l'industrie des matériaux à propriétés optiques et électroniques, laquelle souhaiterait maîtriser son procédé de fabrication. Le sulfure de zinc correspondant, qui est sous forme agglomérée, a été choisi pour sa morphologie structurée : chaque agglomérat présente quatre échelles quant à la taille des particules le constituant. Il est préparé via la décomposition thermique de la thioacétamide dans une solution acide contenant le sulfate de zinc.
La précipitation est effectuée dans un réacteur fermé et parfaitement agité. Le but de cette étude est de présenter une méthodologie originale pour suivre en continu les concentrations en ions et les caractéristiques du solide formé : la production et la disparition des ions sulfure libérés par la thioacétamide, la consommation des ions zinc, l'évolution de la sursaturation relative au produit précipité ZnS. et les caractéristiques morphologiques des particules de ZnS. Les capteurs utilisés sont des électrodes spécifiques, des cellules conductimétriques et une sonde turbidimétrique. D'autres méthodes d'analyses, telles que la microscopie électronique, la granulométrie et la diffraction des RX, complètent cette étude expérimentale.
La morphologie des grains de sulfure de zinc dépend des conditions opératoires : vitesse d'agitation, concentrations initiales en réactifs, pH et température. Le pH est le paramètre qui conduit à la plus grande variabilité morphologique. Nous présentons donc les résultats expérimentaux et l'interprétation correspondante issus de la précipitation de ZnS réalisée à différents pH.
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Mekki, Berrada Mohamed Kamal. "Synthèse d'agglomérats multi-échelles de sulfure de zinc par précipitation homogène." Saint-Etienne, EMSE, 2007. http://tel.archives-ouvertes.fr/tel-00340827.

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Le Sulfure de Zinc obtenu par précipitation homogène présente une grande importance dans l'industrie des matériaux à propriétés optiques et électroniques, laquelle souhaiterait maîtriser son procédé de fabrication. Le sulfure de zinc correspondant, qui est sous forme agglomérée, a été choisi pour sa morphologie structurée: chaque agglomérat présente quatre échelles quant à la taille des particules le constituant. Il est préparé via la décomposition thermique de la thioacétamide dans une solution acide contenant le sulfate de zinc. La précipitation est effectuée dans un réacteur fermé et parfaitement agité. Le but de cette étude est de présenter une méthodologie originale pour suivre en continu les concentrations en ions et les caractéristiques du solide formé: la production et la disparition des ions sulfure libérés par la thioacetamide, la consommation des ions zinc, l'évolution de la sursaturation relative au produit précipité ZnS et les caractéristiques morphologiques des particules de ZnS. Les capteurs utilisés sont des électrodes spécifiques, des cellules conductimétriques et une sonde turbidimétrique. D'autres méthodes d'analyses, telles que la microscopie électronique, la granulométrie et la diffraction des RX, complètent cette étude expérimentale. La morphologie des grains de sulfure de zinc dépend des conditions opératoires: vitesse d'agitation, concentrations initiales en réactifs, pH et température. Le pH est le paramètre qui conduit à la plus grande variabilité morphologique. Nous présentons donc les résultats expérimentaux et l'interprétation correspondante issus de la précipitation de ZnS réalisée à différents pH
Zinc Sulfide obtained by homogeneous precipitation presents a great importance in the industry of materials with specific optical and electrical properties, which would control its manufacturing process. This product, which is in an agglomerated form, was selected for its structured morphology: each agglomerate presents four scales as for the size of the particles. It is prepared via the thermal decomposition of thioacetamide in an acidic solution containing zinc sulphate. Precipitation is carried out in a stirred batch reactor. The main of this study is to present an original methodology to follow in situ and continuously the concentrations in ions and the characteristics of the formed solid: production and disappearance of the ions sulfide released by the thioacetamide, consumption of the ions zinc, change in supersaturation and morphological characteristics of the ZnS particles. The corresponding sensors are ion-selective sulfide electrode, pH electrode, conductimetric cells and a turbidimetric probe. Other methods of analysis are used too in this experimental study, such as scanning electronic microscopy, X-ray diffractometry and particle sizing by light scattering. The morphology of zinc sulfide particles depends on the operating conditions: stirring rate, initial concentrations in reagents, pH and temperature. The pH is the parameter which leads to the greatest morphological variability. We present the experimental results and interpretation resulting from the homogeneous precipitation of ZnS performed at different pH
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Hubert, Cédric. "Synthèse par voie chimique en solution de couches minces semi-conductrices à base de sulfure de zinc : application à la réalisation de cellules solaires de type CuIn(S,Se)2 et CU(In,Ga)Se2." Paris 6, 2007. http://www.theses.fr/2007PA066704.

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Le remplacement de la couche tampon de CdS par des couches sans cadmium est un des objectifs majeurs à moyen terme de la filière des cellules solaires à base de CIS pour deux raisons principales : la toxicité du cadmium et les limitations associées aux pertes dans l’UV introduites par la couche de CdS. Les efforts de recherche dans ce domaine se sont amplifiés significativement ces dernières années. Des résultats prometteurs ont été obtenus par l’utilisation d’une couche tampon à base de sulfure de zinc (ZnS) déposée par voie chimique en solution. Toutefois, la compréhension des mécanismes de dépôt et des propriétés des films synthétisés est encore faible comparée au dépôt du CdS et fait l’objet de ce travail. Dans une première partie, nous présenterons la filière des cellules solaires en couches minces du type CIGS. Nous détaillerons plus particulièrement le rôle de la couche tampon dans ces structures. Au cours du deuxième chapitre, nous réaliserons l’étude thermodynamique du zinc dans les systèmes de dépôt. En outre, nous prendrons en compte l’effet de la température sur les constantes de stabilité afin de prédire le déplacement des domaines de stabilité de ZnS, ZnO et Zn(OH)2. Puis, par le biais de la microbalance à cristal de quartz, nous déterminerons les mécanismes de dépôt des films de ZnS et nous optimiserons alors les conditions opératoires. Le quatrième chapitre est consacrée à l’analyse des propriétés des films. Finalement, des cellules solaires à base de CuIn(S,Se)2 électrodéposé et à base de Cu(In,Ga)Se2 co-évaporée réalisées avec ces nouvelles couches tampons seront analysées
The preparation of cadmium free buffer layers is one of the major objectives in the medium term for the CIS solar cells field for two principal reasons : the toxicity of cadmium and limitations introduced by the CdS layer on the level of the optimal performances of the cells associated with the losses into UV region. This limitation could be overcome by using wider band gap buffer layers. The efforts of research in this field have been developed significantly these last years. The most promising results have been obtained by using zinc oxy-sulfide buffers prepared by chemical bath deposition. However, the understanding of both deposition mechanism and film properties is by far lower than what is the current status of chemical bath deposition of CdS. In a first part, a general presentation of CIS solar cells is done with a special focus on buffer layers. Then, the synthesis of zinc-oxo-sulfide films from aqueous solution is analysed from a thermodynamic point of view. The competition between the formation of ZnS, Zn(OH)2 and ZnO will be considered. The effect of temperature, leading to significant displacements of the deposition regions, will be treated by introducing its effect on the thermodynamical coefficients. In a third part, by means of microbalance analysis, the deposition mechanism are determined and deposition conditions are optimized. The next chapter is focused on films properties which allowed us to fix experimental conditions for the deposition of dense, compact and uniform ZnS films. Finally, device studies have been carried out on electrodeposited copper indium sulfo-selenide and co-evaporated copper indium-gallium di-selenide absorbers
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Dufour, Jean-Paul. "Application de l'électroréflectance à l'étude de couches minces évaporées de sulfure de zinc." Dijon, 1988. http://www.theses.fr/1988DIJOS002.

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Application de l'électroréflectance a l'étude des propriétés optiques de structures aluminium-sulfure de zinc-aluminium. Du fait de la neutralité de l'aluminium dans le visible, les spectres varient avec les modifications des propriétés du sulfure de zinc. L'électroréflectance permet de distinguer les contributions de volume du matériau de celles des interfaces aluminium-sulfure de zinc. L'analyse des spectres met en évidence le renforcement des signaux par les interférences lorsque le matériau est transparent, la diffusion de l'aluminium dans les zones d'interface et conduit au calcul des variations de l'indice optique en fonction de la longueur d'onde
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Le, Bars Maureen. "Devenir du zinc des produits résiduaires organiques après méthanisation et recyclage agricole : rôle des nanoparticules de sulfure de zinc." Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0034.

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Le recyclage agricole de Produits Résiduaires Organiques (PROs) bruts ou après un traitement tel que la méthanisation et/ou le compostage est une pratique répandue. Il est indispensable d’évaluer l’impact environnemental de l’épandage des PROs après méthanisation, technologie en essor, en particulier vis-à-vis du zinc (Zn). La spéciation du Zn dans le PRO est un paramètre crucial pour établir le risque. Nous avons pu mettre en évidence que la méthanisation favorise la formation de nanoparticules de sulfures de Zn (nano-ZnS), qui est donc la forme majoritaire du Zn dans les digestats de méthanisation (>70%). Cette forme du Zn est instable car elle se transforme lors du compostage des digestats. Les paramètres structuraux des nano-cristaux (taille, contrainte) peuvent expliquer leur réactivité. Nos résultats montrent que plus les nano-ZnS sont petites et plus leur contrainte est importante. De plus, l’interaction avec les groupements thiols de certaines molécules organiques, potentiellement présentes dans un digesteur de méthanisation, relâche la contrainte des nano-ZnS et contrôle leur croissance. Enfin, les caractéristiques du sol amendé ont un rôle majeur pour le devenir des nano-ZnS: les composants de sols argileux riches en oxydes de fer sont capables de retenir le Zn issu de la dissolution des nano-ZnS, contrairement à ceux d’un sol sableux. Ce travail apporte une meilleure compréhension de la dynamique du Zn dans les écosystèmes cultivés soumis à l’épandage de PROs
Agricultural recycling of organic waste (OW), raw or after a treatment like anaerobic digestion (AD) and/or composting is common. It is necessary to assess the environmental impact of OW agricultural recycling after anaerobic digestion since this technology is gaining interest, particularly regarding zinc, an abundant element in OW. In order to properly evaluate the risk, zinc speciation must be known. First, we have shown that AD promote the formation of nano-ZnS that is therefore the main species of Zn (> 70%) in AD digestates. This unstable species is transformed during composting of 1 to 3 months. Size and strain are parameters that can explain nanocrystals reactivity. We showed that the more nano-ZnS are small and the higher the strain is. Interaction with thiol containing organic molecules, potentially present in anaerobic digesters, release nano-ZnS structural strain and control its growth. Finally, amended soil characteristics have a key role for nano-ZnS fate: the components of clayey and iron-oxide-rich soils are able to immobilize Zn released by nano-ZnS dissolution, unlike sandy soils components. This work gives a better understanding of zinc dynamics in cultivated ecosystems subject to spreading of organic waste
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Allay, Ahmed. "Etude des cinétiques d'oxydation du sulfure de zinc et de séchage de la blende." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37595410p.

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Gely, Roger. "Contribution à l'étude thermodynamique et cinétique de la lixiviation du sulfure de zinc en milieu sulfurique." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376053561.

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Gely, Roger. "Contribution à l'étude thermodynamique et cinétique de la lixiviation du sulfure de zinc en milieu sulfurique." Paris 6, 1987. http://www.theses.fr/1987PA066051.

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La dissolution du sulfure de Zn synthétique en solution aqueuse sulfurique en présence ou non d'o::(2) en autoclave jusqu'a 200**(o) c. Sous pression d'o::(2), h::(2)s est oxyde et il y a formation de soufre et de h::(2)so::(4). La cinétique de la réaction est étudiée en fonction de la masse de sulfure de Zn, de la concentration h::(2) So::(4), de la pression partielle d'o::(2) et de la température
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Books on the topic "Zinc sulfure"

1

Schultze, L. E. Recovering zinc-lead sulfide from a geothermal brine. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Smyres, G. A. Chlorine-oxygen leaching of a low-grade zinc sulfide flotation concentrate. [Avondale, MD]: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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A, Kuznet͡s︡ov V., and Fok M. V, eds. Sulʹfid t͡s︡inka: Poluchenie i opticheskie svoĭstva. Moskva: "Nauka", 1987.

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Konishi, Yasuhiro. Bioleaching of zinc sulfide concentrate by Thiobacillus ferooxidans. S.l: s.n, 1992.

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Scragg, Jonathan J. Copper Zinc Tin Sulfide Thin Films for Photovoltaics. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22919-0.

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Prater, R. B. Defluorination of byproduct zinc concentrates. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Ito, Kentaro, ed. Copper Zinc Tin Sulfide-Based Thin-Film Solar Cells. Chichester, UK: John Wiley & Sons Ltd, 2014. http://dx.doi.org/10.1002/9781118437865.

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Misiewicz, Jan. Optical excitations in zinc phosphide (zn3p2). Wrocław: Wydawn. Politechniki Wrocławskiej, 1989.

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Scragg, Jonathan J. Copper Zinc Tin Sulfide Thin Films for Photovoltaics: Synthesis and Characterisation by Electrochemical Methods. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.

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More, Andrew Peter. Textural and microstructural studies of zinc sulfide and associated phases in certain base metal deposits. Birmingham: Aston University. Department of Geological Sciences, 1988.

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Book chapters on the topic "Zinc sulfure"

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Gooch, Jan W. "Zinc Sulfate." In Encyclopedic Dictionary of Polymers, 825. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13009.

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Gooch, Jan W. "Zinc Sulfide." In Encyclopedic Dictionary of Polymers, 825. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13010.

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Bährle-Rapp, Marina. "Zinc Sulfate." In Springer Lexikon Kosmetik und Körperpflege, 601. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_11327.

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Bährle-Rapp, Marina. "Zinc Sulfide." In Springer Lexikon Kosmetik und Körperpflege, 601. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_11328.

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Fu, Jing, and Zhongwei Chen. "Zinc–Air Batteries." In Metal–Air and Metal–Sulfur Batteries, 1–20. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315372280-2.

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Copini, C. F. M., G. H. R. Janssen, C. J. N. Buisman, and S. Vellinga. "Recovery of Sulfides from Sulfate-Containing Bleed Streams Using a Biological Process." In Lead-Zinc 2000, 891–902. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118805558.ch61.

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Tian, Qing Hua, Xue Yi Guo, Ping Xue, Yu Song, and Lian Duan. "Electro-Deposition for Foamed Zinc Material from Zinc Sulfate Solution." In Materials Science Forum, 1669–72. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.1669.

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Johnson, Roy, Papiya Biswas, Pandu Ramavath, and Yashwant R. Mahajan. "Zinc Sulfide Ceramics for Infrared Optics." In Handbook of Advanced Ceramics and Composites, 1–34. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-73255-8_16-1.

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Johnson, Roy, Papiya Biswas, Pandu Ramavath, and Yashwant Ramchandra Mahajan. "Zinc Sulfide Ceramics for Infrared Optics." In Handbook of Advanced Ceramics and Composites, 533–67. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-16347-1_16.

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Holze, Rudolf. "Ionic conductance of zinc dodecyl sulfate." In Electrochemistry, 1769. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1586.

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Conference papers on the topic "Zinc sulfure"

1

Kolmachikhina, E. B., T. N. Lugovitskaya, M. A. Tretyak, and K. D. Naumov. "Kinetic investigation of surfactants’ influence on pressure leaching of zinc sulfide concentrates." In VIII Information school of a young scientist. Central Scientific Library of the Urals Branch of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.32460/ishmu-2020-8-0004.

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Pressure leaching is one of the most high-demanded and promising hydrometallurgical technology, which allows one to obtain high efficiency. Taking into account the shutdown of zinc plant in Vladikavkaz («Electrozinc, Lls.») searching the modern methods of zinc production is of current interest. In this work, the issue was observed on influence of temperature and sodium lignosulfonate (SL) onto the zinc and iron sulfides behavior during pressure leaching of zinc sulfide concentrate from the Uchalinsk deposit. Temperature increasing from 130 to 150oC led to decreasing of zinc extraction and sulfur-sulfide pellets formation; that indicated increasing the zinc sulfide wettability by the molten sulfur due to reduction of viscosity and surface tension of molten sulfur. Increasing the LSN dosage promoted running up of the absolute value of the zinc extraction. The highest growth of the zinc extraction (17.39 %) was obtained at 0.2 g/dm3 LSN. Further increasing of the LSN concentration on 0.2 g/dm3 (up to 0.4, 0.6, 0.8 g/dm3) led to double decrease of their effectiveness in reference to previous LSN concentration.
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Semkin, M. A., N. B. Urusova, and A. N. Pirogov. "Features of structure state and magnetic properties of mono- and polycrystalline LiNiPO4 and LiNi0.9Co0.1PO4." In VIII Information school of a young scientist. Central Scientific Library of the Urals Branch of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.32460/ishmu-2020-8-0005.

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Pressure leaching is one of the most high-demanded and promising hydrometallurgical technology, which allows one to obtain high efficiency. Taking into account the shutdown of zinc plant in Vladikavkaz («Electrozinc, Lls.») searching the modern methods of zinc production is of current interest. In this work, the issue was observed on influence of temperature and sodium lignosulfonate (SL) onto the zinc and iron sulfides behavior during pressure leaching of zinc sulfide concentrate from the Uchalinsk deposit. Temperature increasing from 130 to 150o C led to decreasing of zinc extraction and sulfur-sulfide pellets formation; that indicated increasing the zinc sulfide wettability by the molten sulfur due to reduction of viscosity and surface tension of molten sulfur. Increasing the LSN dosage promoted running up of the absolute value of the zinc extraction. The highest growth of the zinc extraction (17.39 %) was obtained at 0.2 g/dm3 LSN. Further increasing of the LSN concentration on 0.2 g/dm3 (up to 0.4, 0.6, 0.8 g/dm3 ) led to double decrease of their effectiveness in reference to previous LSN concentration.
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Majumdar, Bhaskar S., and Peter J. Melling. "Toughening Of Zinc Sulfide." In SPIE 1989 Technical Symposium on Aerospace Sensing, edited by Paul Klocek. SPIE, 1989. http://dx.doi.org/10.1117/12.960766.

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Jermolovicius, Luiz A., Jose T. Senise, and Renata B. do Nascimento. "Microwave drying of zinc sulfate." In International Microwave and Optoelectronics Confererence. IEEE, 2007. http://dx.doi.org/10.1109/imoc.2007.4404264.

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Uchino, M., and T. Mashimo. "Hugoniot measurements of zinc sulfide." In Proceedings of the conference of the American Physical Society topical group on shock compression of condensed matter. AIP, 1996. http://dx.doi.org/10.1063/1.50572.

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Ghani, M., S. V. Slycken, E. Meers, F. M. G. Tack, F. Naz, and S. Ali. "Enhanced Phytoextraction of Cadmium and Zinc Using Rapeseed." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96362.

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In a green house pot experiment, the effects of three amendments, sulphur (S), ammonium sulphate ((NH4)2SO4) and ethylenediaminetetracetic acid (EDTA) were tested for phytoextraction of Cd and Zn by rapeseed (Brassica napus L.). Elemental sulphur was applied as 20.00, 60.00, and 120.00 mg.kg−1 soil. EDTA was tested at a dose of 585.00 mg.kg−1 soil, and (NH4)2SO4) at a rate of 0.23 mg.kg−1 soil. All treatments received a base fertilization (Hogland) before sowing. Plants were harvested after 51 days of growth and shoot dry matter and soil samples were analysed for metal contents. All amendments caused a significant increase in Cd and Zn contents in plant shoots of all treatments than control treatment. Further, EDTA was most effective for extraction metals concentrations in shoot biomass but the plants showed significant signs of toxicity and yield were severely depressed. The addition of sulfur favorably influenced plant biomass production. The fertilized ammonium sulfate treatment resulted in the highest phytoextraction of Cd and Zn and the amounts of these metals accumulated in plant shoot exceeded by a factor of 4 and 3 respectively. Finally, Brassica napus could be used for soil remediation keeping its other uses which will make the contaminated site income generating source for the farmers.
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Alharbi, Bader, Norah Aljeaban, Alexander Graham, and Kenneth S. Sorbie. "Iron Sulfide and Zinc Sulfide Inhibition and Scale Inhibitor Consumption." In Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/197688-ms.

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"Evaluation of undoped zinc sulfide crystal scintillator." In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC). IEEE, 2013. http://dx.doi.org/10.1109/nssmic.2013.6829663.

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Gao, De, and Todd S. Stefanik. "Transparent zinc sulfide processed from nanocrystalline powders." In SPIE Defense, Security, and Sensing, edited by Randal W. Tustison and Brian J. Zelinski. SPIE, 2013. http://dx.doi.org/10.1117/12.2016264.

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Werner, Kevin, Noah Talisa, Brian Wilmer, Laura Vanderhoef, Aaron Schweinsberg, Christopher Wolfe, Anthony Valenzuela, and Enam Chowdhury. "Mid-Wave Infrared Nonlinear Optics in Polycrystalline Zinc Selenide and Zinc Sulfide." In Frontiers in Optics. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/fio.2018.jtu3a.33.

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Reports on the topic "Zinc sulfure"

1

VICUS TECHNOLOGIES LLC KENNEBUNK ME. Development of Zinc Sulfide Seeker Window Material. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada432111.

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Haynes, Anthony. Low Cost Zinc Sulfide Missile Dome Manufacturing. Fort Belvoir, VA: Defense Technical Information Center, April 2008. http://dx.doi.org/10.21236/ada480194.

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Kouzes, Richard T., and James H. Ely. Lithium and Zinc Sulfide Coated Plastic Neutron Detector Test. Office of Scientific and Technical Information (OSTI), July 2010. http://dx.doi.org/10.2172/991090.

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Swisher, J. H., W. S. O`Brien, and R. P. Gupta. An attrition-resistant zinc titanate sorbent for sulfur; [Quarterly] report, September 1--November 30, 1993. Office of Scientific and Technical Information (OSTI), March 1994. http://dx.doi.org/10.2172/143950.

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Swisher, J. H., W. S. O`Brien, and R. P. Gupta. An attrition-resistant zinc titanate sorbent for sulfur. Technical report, 1 March--31 May 1994. Office of Scientific and Technical Information (OSTI), September 1994. http://dx.doi.org/10.2172/10183101.

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Swisher, J. H. An attrition-resistant zinc titanate sorbent for sulfur. Technical report, December 1, 1992--February 28, 1993. Office of Scientific and Technical Information (OSTI), May 1993. http://dx.doi.org/10.2172/10149817.

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Swisher, J. H., W. S. O`Brien, and R. P. Gupta. An attrition-resistant zinc titanate sorbent for sulfur. [Quarterly] technical report, December 1, 1993--February 28, 1994. Office of Scientific and Technical Information (OSTI), June 1994. http://dx.doi.org/10.2172/10154194.

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Swisher, J. H. An attrition-resistant zinc titanate sorbent for sulfur. Final technical report, September 1, 1992--August 31, 1993. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10132216.

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Swisher, J. H. An attrition-resistant zinc titanate sorbent for sulfur. [Quarterly] technical report, March 1, 1993--May 31, 1993. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10175514.

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Grindley, T. Adsorption of hydrogen sulfide by zinc ferrite in the temperature range 315 to 538 C (600 to 1,000 F). Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10185691.

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