Journal articles: 'Caustic potash'

1

Afrane, G. "Leaching of caustic potash from cocoa husk ash." Bioresource Technology 41, no. 2 (January 1992): 101–4. http://dx.doi.org/10.1016/0960-8524(92)90177-y.

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Sulaiman, Sarina, Ahmad Faiz Che Fisol, Atikah Mohamed Sharikh, Dzun Noraini Jimat, and Parveen Jamal. "Extraction of caustic potash from spent tea for biodiesel Production." IOP Conference Series: Materials Science and Engineering 290 (January 2018): 012062. http://dx.doi.org/10.1088/1757-899x/290/1/012062.

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Gajda, Iwona, John Greenman, Chris Melhuish, Carlo Santoro, and Ioannis Ieropoulos. "Microbial Fuel Cell-driven caustic potash production from wastewater for carbon sequestration." Bioresource Technology 215 (September 2016): 285–89. http://dx.doi.org/10.1016/j.biortech.2016.04.004.

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HUANG, Guolin, Chengfang ZHANG, and Zhongsheng CHEN. "Pulping of Wheat Straw with Caustic Potash-Ammonia Aqueous Solutions and Its Kinetics." Chinese Journal of Chemical Engineering 14, no. 6 (December 2006): 729–33. http://dx.doi.org/10.1016/s1004-9541(07)60003-2.

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Kumar, Sanjeev. "Electro-organic Nuclear Oxidation: Methoxylation of Aromatic Compounds at Platinum Electrode." E-Journal of Chemistry 8, no. 2 (2011): 846–50. http://dx.doi.org/10.1155/2011/868149.

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The anodic oxidation of aromatic compounds was carried out at controlled potential in the non aqueous methanol-KOH system for the purpose of investigating this type of anodic reaction as a new possible synthetic method. The electroorganic nuclear oxidation was carried out at controlled potential electrolysis in a conventional three electrode cell assembly with platinum plate working as well as counter electrode and saturated calomel electrode as reference electrode. Controlled potential electrolysis was carried out in the solvent methanol and the supporting electrolyte in caustic potash. All the spectral and analytical data were found in good agreement with the synthesized compounds.

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Zhou, Hongming, Shili Zheng, and Yi Zhang. "Leaching of a low-grade niobium–tantalum ore by highly concentrated caustic potash solution." Hydrometallurgy 80, no. 1-2 (November 2005): 83–89. http://dx.doi.org/10.1016/j.hydromet.2005.07.006.

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Patidar, Rajesh, Babulal Rebary, Gopala Ram Bhadu, and Govind Patel. "ICP-MS method development and validation for determination of trace elemental impurities in caustic potash." International Journal of Mass Spectrometry 454 (August 2020): 116356. http://dx.doi.org/10.1016/j.ijms.2020.116356.

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Daniyan, I. A., K. Mpofu, O. L. Daniyan, A. O. Adeodu, and I. D. Uchegbu. "Design and Modelling of Automated Reactor for the Production of Caustic Potash from Cocoa Pod Husk." Procedia CIRP 84 (2019): 960–65. http://dx.doi.org/10.1016/j.procir.2019.03.201.

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HUANG, GUOLIN, XIZHEN LIANG, ZHONGSHENG CHEN, and CUIZHEN LI. "Environmentally friendly pulping of rice straw to eliminate black liquor discharge." August 2010 9, no. 8 (September 1, 2010): 7–12. http://dx.doi.org/10.32964/tj9.8.7.

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Rice straw pulping trials were carried out with aqueous ammonia mixed with caustic potash to eliminate problems associated with black liquor in nonwood pulping. This process likely can use the black liquor, which contains nitrogen, potassium, and ammoniacal lignin, as a fertilizer for agricultural production. Excess ammonia in the black liquor was recovered by batch distillation. The black liquor was further treated for reuse by coagulation under alkaline conditions. We studied the effects of flocculating conditions, such as dosage of 10% aluminum polychloride, dosage of 0.1% polyacrylamide, reaction temperature, and pH of black liquor to obtain suitable technological conditions. Analyses confirmed that major quantities of lignin and 23.7% nitrogen (dried basis), 6.2% potassium (dried basis) existed in the flocculating residues, so this is potentially a good solid fertilizer. The amount of delignification and the pulp screen yield for the process remained steady at 83%-85% and 38%-40%, respectively, when reusing the supernatant four times.

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HUANG, GUOLIN, XIZHEN LIANG, ZHONGSHENG CHEN, and CUIZHEN LI. "Environmentally friendly pulping process for rice straw to eliminate black liquor discharge." June 2011 10, no. 6 (July 1, 2011): 39–44. http://dx.doi.org/10.32964/tj10.6.39.

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Rice straw pulping trials were carried out with aqueous ammonia mixed with caustic potash to eliminate the black liquor problem in nonwood pulping. The black liquor, which contains nitrogen, potassium, and ammoniacal lignin, potentially can be used as a fertilizer for agricultural production. Excess ammonia in the black liquor was recovered by batch distillation. The black liquor was further treated for reuse by coagulation under alkaline conditions. Effects of flocculating condition, such as dosage of 10% aluminum polychloride, dosage of 0.1% polyacrylamide, and reaction temperature and pH of black liquor, were studied systematically by experiment to obtain suitable technological conditions. Infrared and other analytical techniques confirmed that major quantities of lignin, 23.73% nitrogen (dried basis), and 6.24% potassium (dried basis) existed in the flocculating residues, which has the potential to be a good solid fertilizer. The amount of delignification and the pulp screen yield for the process remained steady at 83%–85 % and 38-40 %, respectively, when reusing the supernatant four times.

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Thapa, Ganesh Bahadur, and Joydeb Pal. "Physico-chemical parameters of Itahari sub-metropolitan fish pond, Nepal." Journal of Natural History Museum 30 (December 1, 2018): 129–40. http://dx.doi.org/10.3126/jnhm.v30i0.27542.

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Itahari Sub-metropolitan pond is located in the centre of the city. Influence of variations in physico-chemical parameters on aquatic flora and fauna especially in fishes brought strong stress on fishes and increases the incidence of diseases leading to high mortality. Due to lack of adequate knowledge about it, productivity of ponds is very low. In the present study, maximum and minimum variations and correlation between different physico-chemical parameters - air temperature, water temperature, pH, turbidity, total dissolved solids, dissolved carbon dioxide, ammonia, dissolved oxygen, biological oxygen demand, chloride, total alkalinity, total hardness and phosphate were taken into consideration. The water quality of fish ponds were normal except high fluctuation of chloride 4.0 - 44.87mg/l and ammonia 0.48-13.6 mg/l during manuaring period and casual addition of wastes like toilet cleaners, caustic potash etc.. Due to sudden fall in DO less than 4 mg/l during April and May, 2014 and increment of ammonia after addition of toilet wastes in Sept.19, 2015 ; mass mortality of fishes Labeo rohita, Cirrhina mrigala, Hypothalamichthys molitrix, Aristichthysnobilis occurred in the study site.

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Chandranupap, Panitnad, and Pravitra Chandranupap. "Pulping Of Vetiver Grass With NH4OH-KOH-AQ Mixtures." ASEAN Journal of Chemical Engineering 11, no. 2 (February 11, 2012): 37. http://dx.doi.org/10.22146/ajche.50061.

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The aim of this work was to study the effects of various experimental parameters on vetiver grass (Vetiveria nemoralis A. Camus) pulping. Mixtures of NH4OH-KOH were used as cooking liquors. The caustic potash did not only reduce the NH3 usage and cooking time, but also provided a potassium source as a fertilizer in the black liquor. Anthraquinone (AQ) was added in certain amount as cooking catalyst. The experiment was conducted following a central composite design involving three pulping variables (amount of KOH: 3.5 to 7% on oven-dried sample, amount of NH4OH : 25 to 45% on oven-dried sample, and cooking temperature : 145 to 160°C). The quantity of anthraquinone was fixed at 0.1% on oven-dried sample. Pulping time was fixed at 2 hours and liquid-to-oven-dried sample ratio was 8:1. Responses of pulp properties to the process variables were analyzed using DESIGN-EXPERT®, a computer-aided design of experiment software. The pulp properties revealed that this pulp is capable for making of printing and writing paper. Furthermore, this study provided a new pulping process for vetiver grass to reduce problems of discharge black liquor.

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Thapa, Ganesh Bahadur, and Joydeb Pal. "General properties of water of Baidya fish pond, Tankisinwari, Nepal." Nepalese Journal of Biosciences 2 (January 24, 2013): 55–63. http://dx.doi.org/10.3126/njbs.v2i0.7490.

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In the present study, ranges and correlation among different physicochemical parameters viz., air temperature, water temperature, pH, turbidity, total dissolved solids, conductivity, dissolved carbon dioxide, ammonia, nitrate, dissolved oxygen, biological oxygen demand, chloride, total alkalinity, total hardness and phosphate were taken into consideration. The water quality of Baidya fish pond was normal except high fluctuation of chloride 1±0.241 to 29.84±0.260 mg/l and ammonia 1.55±0.088 to 18.7±0.061 mg/l during manuaring period and casual addition of wastes like toilet cleaners, caustic potash etc. Outbreak of epizootic ulcerative syndrome (EUS) was observed at the periphery of Baidya fish farm during winter months when polluted cold water from Koshi canal was added. The affected fishes developed several lesions around the body and fin rot. Due to sudden fall in dissolve oxygen, less than 4 mg/l during April and May, 2010 mass mortality of fishes Labeo rohita, Cirrhina mrigala, Hypothalamichthys molitrix, Aristichthys nobilis occurred. When chicken droppings were added in pond, ammonia was raised up to 18.7 mg/l which led to mass mortality of fish (Pangasius) during August. DOI: http://dx.doi.org/10.3126/njbs.v2i0.7490 Nepalese Journal of Biosciences 2 : 55-63 (2012)

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Al Malki, Jamila S., Nahed Ahmed Hussien, Ehab M. Tantawy, Yassir Khattab, and Amaal Mohammadein. "Terrestrial Biota as Bioindicators for Microplastics and Potentially Toxic Elements." Coatings 11, no. 10 (September 23, 2021): 1152. http://dx.doi.org/10.3390/coatings11101152.

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Plastic products used in our daily life remain in the environment for a long time. Plastics decompose gradually into smaller fragments (<5 mm) known as microplastics. There are different sources of microplastics contamination, including plastic bags, masks, synthetic textiles, and various coatings. Microplastics’ smaller size enhances toxic pollutants’ adsorption, through which they are easily digested by small biota and finally accumulated along the food chain. Many studies are found concerning marine microplastic distribution and pollution; however, rarely do they address terrestrial contamination. The terrestrial species Eobania vermiculata, Rumina decollata, Porcellio, Armadillo, Lumbricus terrestris, and Scolopendra were evaluated as bioindicators for soil pollution by microplastics and some potentially toxic metallic elements. Microplastics were isolated with the help of caustic potash. The particles were characterized by infrared spectroscopy (FTIR); some associated potentially toxic metals were assessed in the filtrate by inductively coupled plasma spectrometry (ICP). The following polymers were present in all studied samples: copolyamide, nylon, high- and low-density polyethylene, polyamide, and polyester. In addition, the metallic elements antimony, iron, aluminum, selenium, and zinc were determined with different concentrations. Thus, terrestrial biota can serve as bioindicators for microplastic pollution of soil, which could act as a vector for potentially toxic elements.

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15

Bell, J. W., D. P. Veldsman, and C. S. Whewell. "Measurement of Damage in Wool Materials IV-A Modification of the Krais-Markert-Viertel (K.M.V.) Test- The Supercontraction of Keratin Fibres in Solutions of Caustic Potash." Journal of the Society of Dyers and Colourists 74, no. 2 (October 22, 2008): 85–88. http://dx.doi.org/10.1111/j.1478-4408.1958.tb02239.x.

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16

Dudareva, N. Y., M. M. Abramova, and R. V. Kalschikov. "Corrosion-Resistance of MAO-Coatings on Al-Si Alloys." Materials Science Forum 870 (September 2016): 83–89. http://dx.doi.org/10.4028/www.scientific.net/msf.870.83.

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The results of the experimental study of the influence of micro-arc oxidation (MAO) on the corrosion resistance of aluminum alloy samples AK12D are presented in this paper. The description of the research methodology, including the formation of the hardened layer on the surface of laboratory samples by MAO under various process conditions and the study of their corrosion resistance are given. The studies were conducted in accordance with the experimental design theory for fractional factorial experiment 23-1. The MAO process was carried out using an alkaline electrolyte. MDO process factors were chosen according to an electrolyte concentration of the components (caustic potash - KOH and water glass - Na2SiO3) and electrical parameters of the process determined by the capacitors capacitance. In addition to corrosion resistance of the samples, the thickness, porosity, and microhardness of MAO layer were determined. Regression equations and conclusions about the degree of influence of modes of micro-arc oxidation on the corrosion resistance of the samples were compiled on the basis of the data obtained. The results showed that the MAO process regimes have a significant effect on the corrosion resistance of the samples. Regression equations describing the effect of the thickness and porosity of the surface on the corrosion rate are derived. It has been found that the greatest influence on the corrosion resistance renders the mean value of porosity. With an increase of this parameter there is an increase in the corrosion resistance of the coating. To account for this effect, it has been suggested that the corrosion resistance of the MAO layer should not correlate with the porosity but with the absolute volume occupied by the pores in the coating. The study was conducted to investigate the prospects for the use of the MAO method for improving the corrosion properties of parts and details made of Al-Si aluminum alloys.

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Manrique Murillo, José Luis, Oscar Christian Medina Carpio, Pamela Lisbeth Manrique Pino, Ever Pavel Macedo Benavente, and Danny Pamela Tupayachy Quispe. "Evaluación de la capacidad desulfurante de la cascarilla de Oryza sativa transformada como material poroso activado con potencial uso en el tratamiento de biogás." Veritas 21, no. 2 (October 30, 2020): 67. http://dx.doi.org/10.35286/veritas.v21i2.281.

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La cascarilla de Oryza sativa suele ser desechada e incinerada sin control por lo cual en la presente investigación se le dio un uso alternativo mediante su transformación como material adsorbente codificado como HRKOH, ACARROZ y ACFeO. (CAC para carbón activado comercial), la activación de la cascarilla se llevó a cabo de manera química utilizando KOH (Potasa Caustica “Clint” en escamas) al 40% esto para lisar estructuras lignocelulósicas; posteriormente se adicionó químicamente un óxido metálico. El proceso se optimizó mediante un diseño factorial multinivel, el rendimiento máximo lo registró el material HRKOH y fue de 94.45%, no obstante debido a su escasa porosidad y consiguientemente baja retención de contaminantes no se le consideró como un material competente. Las pruebas en campo respecto a la adsorción de ácido sulfhídrico mostraron similares comportamientos entre ACarroz, ACFeO y CAC, es así que se optó por contrastar al material ACARROZ vs CAC mediante isotermas obteniéndose ajustes similares para ambos materiales; el ACarroz se ajustó mejor a la isoterma de Langmuir mostrando un R2 de 0.9937 (R2 en Freundlich = 0.986), comportamiento similar mostró el carbón comercial al ajustarse con un coeficiente de determinación de 0.9965 para Langmuir y 0.957 para Freundlich.

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Świto, Lucjan. "Skarga o nieważność wyroku "per modum actionis" czy "per modum exceptionis"?" Prawo Kanoniczne 52, no. 3-4 (December 10, 2009): 355–67. http://dx.doi.org/10.21697/pk.2009.52.3-4.18.

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Can. 1621 CIC, necnon art. 271 Instructionis Dignitas Connubii duas formas querelae contra sententiam insanabilem distinguit: per modum actionis ac per modum exceptionis. Quae distinctio quaestiones procedurales parit. Analysis normarum in praesenti disquisitione contenta ad sequentes conclusiones perducit. Actio contra nullitatem sententiae et exceptio contra nullitatem sententiae essentialiter differunt circa terminum et modum querelae proponendae, iudicis competentiam et modum procedendi in ipsis cognoscendis. Deest tamen differentia circa indolem decisionum, quae cognitis mediis dici possunt. Tam querela nullitatis contra sententiam insanabilis nullitatis per modum actionis, quam querela nullitatis contra sententiam insanabilis nullitatis per modum exceptionis, decretum de sententiae invaliditate necessitatemque iterandi processum causare potest. Unicum distinctionis criterium inter utramque querelae formam momentum est procedendi quo querela nullitatis contra sententiam proposita est. Querela nullitatis sententiae per modum actionis accidit antequam causa devoluta sit, scilicet parte validitatem sententiae, non autem aequitatem accusante. Tunc querela nullitatis secundum normas de processu contentioso orali tractabitur. Querela nullitatis sententiae per modum exceptionis locum obtinet, quando proponitur: 1) una cum appellatione, 2) una cum petitione restitutionis in integrum, 3) una cum nova causae propositione, et quando: 4) nullitas sententiae in processu coram iudice ad quem constata est, quo casu secundum normam de causis incidentalibus tractatur.

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Nasiłowski, Kazimierz. "Duchowni niekanoniczni, a sankcje na nich nakładane w okresie święceń relatywnych." Prawo Kanoniczne 31, no. 1-2 (June 5, 1988): 147–236. http://dx.doi.org/10.21697/pk.1988.31.1-2.11.

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Quod attinet ad sacramenta, praecipue autem ad baptism um , oridnem et Eucharistiam, tempore ordinationis relativae, quam vocant, a sacerdotibus celebrata maximas poenas in Ecclesia luentibus vel ab ea separatis très sunt etiam nostra aetate diversae doctorum opiniones. Ex sententia primae opinionis fautorum vera agnoscebantur sacramenta, quae dixdmus, ab episcopo viel presbytero etiam suspenso, degradato, deposiito aut ab Ecclesia separate catholico more tunc administrata. Ista igitur opinio similis est praesentis catholicorum persuasionis de veris sacramentis a talibus sacerdotibus eodem modo nunc celebratis. Ex sententia autem secundae opiniionis fautorum episcopi et presbyteri ab Ecclesia sepàrati vera sacramenta celebrare non poterant. Hanc opinionem persuasio sequiitur de reordinaitionibus tunc in Ecclesia faciendis, i. e. de eo ordine aliquando clerico conferendo, quem extra Ecclesiam accepit. Tertiae denique opinionis fautores vigentem illo tempore traditionem ecclesiasticam in re sacramentorum extra Ecclesiam catholicam celebratorum incertam putant et obscuram vel duplicem atque inconstantem. Nonnulli autem viri docti quaestionem hanc inenodabilem esse dicunt. Quamquam diversae istae de sacramentis opiniones Gratiano ascribuntur et attrdibuuntur, tamen etiam ad ipsam Ecclesiae doctrinam spectan tempore ordinationis relativae florentem. Namque et Magistri effata auctoritatibus in eius Decreto contentis nituntur et opinionum, quas diximus, fautores diversas sententias suas iisdem auctoritatibus comprobare conantur. Ut in opere demonstiravimus ad edendum praeparato, secunda opinio non multo post systematis ordinationis absolutae introductionem divulgari incoepta est, ad quod potissimium prioris systematis celerrime evanescens memoria ansam dedit. Hac etiam de causa primae opinionis fautorïbus argumenta deerant ad rectam eorum sentemtiam satis comprobandam et plenae erroris ceterae duae opiniones, neque solum fictae, sed etiam imperite absurdeque fictae, usque ad nostram aetatem obtinere poterant. Itaque nulla ex tribus his opinionibus controversiae de vi sacramentorum tempore ordinationis relativae ex tra Ecclesiam celebratarum penitus dirimendae causa esse potest. Omnes enim non satisfaciunt iis, quae recentior doctrima ab investigatoribus recte ac merito postulat. Numque sive ad vocabulorum artis sive ad rerum significationem enodandam nimis pauci investigantur et secum com parantur fontes optima sui ipsorum interpretes. Non atteinditur etiam antiquorum institutorum ecclesiasticorum natura atque indoles, neque ratio habetur legum et praeceptorum, quibus ordinationis relativae systema regebatur, neque anim us ad id satis advertitur, quod differat inter hoc systema et systema ordinationis absolutae. His potissim um de causis ea, quae tantum ordinationis absolutae propria sunt, in multa periodi ordinationis relativae texta, quae vocantur, quasi vi adihibita immttuntur. Omnes etiam enumeratarum opinionum fautores, quamquam diverso modo et inconsulte, detrimentum afferunt tota ordinationis relativae periodo florenti universali doctrinae Ecclesiae vera agnoscentis sacramenta, quae dixdmus, ubicumque eiusdem consuetudine celebrata. Igitur omnibus auctoritatibus omnibusque Gratiani dictis in eius Decreto contentis atque decretistarum doctrinis necnon opinionibus scriptorum usque ad nostram aetatem systema ordinationis relativae quoquo modo tractantium diligenter investigatis disputationes quasdam in his commentariis trimestribus, quibus titulus Prawo Kanoniczne (lus Canonicum), proximis superioribus annis edidimus. Ibi leges et praecepta explicavumus illius systematis propria. Item multis argumentis demonstravimus primam ex relatis opinionem, quamquam non satis probatem, veram tamen, secundam autem et tertiam falsis prorsus rationibus fultam esse. In ista autem disputatione novis argumentis comprobavimus tota ordinationis relativae periodo floruisse universalis Ecclesiae de veris sacramentis ubicumque eiusdem consuetudine celebratis doctrinam, multoties a Pontificibus Romanis, conciliis oecumenicis et synodis confirmatam. Argumenta haec ex significatione deprompsimus sive nominum claricis quoquo modo indignis tunc impositorum, ut pseudoepiscoporum, pseudopresbyterorum, et clericrum non canonicorum, sive poenarum quas tales clerici luebant. Ex hoc m ulto etiam magis apparet primam, quam diximus, opinionem veram, secundam autem et tertiam falsam esse. Istius vtro quaestionis explicandae materiam ordine disposuimus hoc: Introductio — I. Pseudoclerici — A. Significatio particulae „pseudo-” ad rationem verborum artis saecularis explicata — B. Sacramentorum vis sententia Cypriani atque Stephani I illustrata — C. Pseudobaptizati et pseudoclerici — D. Psaudioepiscopi — 1. Opinio Cypriani — 2. Opinio Stephani I — 3. Opinio Leonis I ex legislatione eccleisiasitica et Gratiani dictis considerata — a. Decisio Leonis I de pseudoepiscopis ab eisque facta ordinatione — b. Decisio Leonis I de pseudoepiscopis cum legislatione ecclesiastica comparata — c. Decisio Leonis I de pseudoepiscopis legibus explicata de rigore disciplinae et de dispensatione misericordiae ordine quodam a Gratiano dispositis — 4. Opinio Pelagii I — E. Pseudopresbyteri — II. Clerici non canonici — A. De significatione nominum adiectivorum „canonicus — non canonicus” — B. Canonica clericorum electio — C. Vita cleiricorum canonica — D. De regula rigoris disciplinae et miseirciordiae in puniendis clericis non canonicis observanda — Conclusio.

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"Market trends for caustic potash." Focus on Surfactants 2006, no. 8 (August 2006): 2–3. http://dx.doi.org/10.1016/s1351-4210(06)71251-3.

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"Tessenderlo to become the leading supplier of caustic potash in Europe." Focus on Surfactants 2006, no. 7 (July 2006): 3. http://dx.doi.org/10.1016/s1351-4210(06)71222-7.

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22

"Notes on the Treatment of Epithelioma By Means of Caustic Potash." Archives of Dermatology 142, no. 8 (August 1, 2006): 970. http://dx.doi.org/10.1001/archderm.142.8.970.

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23

Ogunkunle, Oyetola, and Noor A. Ahmed. "A robust statistical model for optimising biodiesel production from waste cooking oil using non-synthetic caustic potash." International Journal of Ambient Energy, April 28, 2021, 1–14. http://dx.doi.org/10.1080/01430750.2021.1918242.

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AK, Nayyar, and Ghatak S. "Bone Preparation from Embalmed Human Cadavers - A Retrieval and Curation Technique." Austin Journal of Anatomy 8, no. 1 (June 2, 2021). http://dx.doi.org/10.26420/austinjanat.2021.1098.

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Bone preparation involves soft tissue removal, maceration, bleaching and labelling. In the absence of a standardized methodology a large repository of human bones are lost, as most medical colleges do not process bones after the dissection of human cadavers. The present study therefore conducted with the aim of evaluating the least time-consuming and effective method of bone preparation from embalmed and wet specimens. The method used included a process of maceration, which involves soft tissue removal and then boiling the bones in 60 litres of water for 2 hours. The process of maceration was augmented by adding potassium hydroxide pellets (caustic potash mol. wt. 56.11) after 30 minutes of initiation of boiling; 200-250 gm in the case of male bones and 150 – 200 gm in the case of female bones. After maceration was complete, the bones were bleached by soaking them in 30 – 35 litres of hydrogen peroxide 30% w/v solution (mol. wt. 34.01) for 12-14 hours. The bleached bones were then washed with water and soaked in 30 -35 litres of acetone (extra pure mol. wt. 58.08, boiling point 55.5° – 56°C) for 12 hours to degrease them. The bones dried naturally by spreading them on blotting paper and subsequently painted with a mixture of half a litre of lacquer and half a litre of lacquer thinner. This study concluded that the preparation of bones using the above method was effective, fast, odourless, and good quality human bones for anatomical study resulted.

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Rodríguez Valdivia1, Marcelo, Gladys Ocharán Velásquez, Karen Calderón Soncco, and Víctor Benavides Paredes. "SÍNTESIS DE ZEOLITA LINDE F MEDIANTE TRATAMIENTO ALCALINO CON POTASA CAÚSTICA A PARTIR DE ROCA DE ORIGEN VOLCÁNICO PROVENIENTE DE SILLAR, PERÚ; SU APLICACIÓN EN LA ADSORCIÓN DE COBRE(II)." Revista Boliviana de Química 38, no. 1 (April 30, 2021). http://dx.doi.org/10.34098/2078-3949.38.1.2.

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El presente artículo reporta los resultados de la síntesis de material zeolítico con capacidad adsorbente a partir de una roca de origen volcánico proveniente de sillar, Arequipa, Perú. La experimentación se efectuó en un reactor de acero inoxidable utilizando soluciones con diferentes concentraciones de KOH (2.0, 2.5 y 3.0 M), a una temperatura constante de 150°C y con un tiempo de contacto entre el material volcánico y la solución de 24, 48 y 72 horas. El producto obtenido se caracterizó mediante, análisis microscópico de barrido (SEM) y capacidad de intercambio catiónico (CIC). Los resultados demostraron que se produjo zeolita sintética en función de la concentración de KOH como variable independiente más influyente. La mayor capacidad de intercambio catiónico (CIC) observada fue de 27.91 meq/100g y correspondió a la formación de zeolita Linde F obtenida con una solución de KOH 3.0 M y por un tiempo de 72 horas usando un material cuyo tamaño de partícula fue de 4 mm. Se realizaron pruebas de adsorción utilizando soluciones conteniendo cationes Cu2+ a fin de evaluar su capacidad y cinética de adsorción.

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Journal articles on the topic 'Caustic potash'

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