نتایج جستجو برای: bentonite refining
تعداد نتایج: 14253 فیلتر نتایج به سال:
ترکیب شیمیایی، کانیشناسی و کاربرد بنتونیتهای دهمحمد، چاهکم-1، چاهکم -2 و شیرگشت (خراسان و یزد)
Mineralogy and chemical composition of Deh Mohammad, Shirgesht, Chah Cam-1 and Chah Cam-2 bentonite deposits were studied in detail. Tests for foundry moulds uses carried out on raw and processed. Deh Mohammad with 300000 tons reserve is the biggest deposit. Deh Mohammad consists of 75 – 95% montmorillonite, 5 - 25% cristobalite, 0 -3% calcite, and less than 1.5% halite. The colloidal index for...
One of the major sources, which wastes the environment is the wastewater produced from the human activity. At present, in order to decrease waste hazards and to restrict the resulted effects on the environment, investigators studying the possibility of using new methods and materials to treat wastewater. Coagulation and flocculation process are physical-chemical methods that widely used in the ...
The present work aims to investigate the effect of sulphanilamide (SA) adsorption on the zeta potential and water loss of raw local bentonite (B) and Na-bentonite (Na-B) suspensions. This was accomplished by separating the fine particles of raw bentonite of size (< 1μm), then activating them by Na+ ions. Adsorption isotherms of SA on B and Na-B were obtained at different SA concentrations rangi...
Six ruminally cannulated steers, five Holsteins and one Hereford (250 to 295 kg), were fed 84% forage sorghum silage plus 16% supplement or 50% forage sorghum silage plus concentrate and supplement diets containing either no addition (controls), 1% sodium bicarbonate (NaI-1CO 3 ) or 2% sodium bentonite in a 2 X 3 factorial arrangement of treatments in a 6 • 6 Latin-square experiment with 3-wk p...
application of hyperactivation process in palletizing iron ore, in order to decrease bentoniteconsumption has been investigated. different amounts of bentonite and sodium hydroxide, as activating agents,were added to iron ore and the quality of formed pellets were determined. the results show that addition of 0.01pct. naoh improves the pellet quality significantly while the bentonite content re...
The adsorption of contaminants plays an important role in the process of their elimination from a polluted environment. This work describes the issue of loading environment with lead Pb(II) and the resulting negative impact it has on plants and living organisms. It also focuses on bentonite as a natural adsorbent and on the adsorption process of Pb(II) ions on the mixture of bentonite and botto...
Clark, D. G. (1970). Brit. J. industr. Med., 27, 186-188. Inhibition of the absorption of paraquat from the gastrointestinal tract by adsorbents. The efficacy of the oral administration of adsorbents Kaolin, Decalso, Amberlite, Bentonite and Fuller's Earth in preventing the toxic actions ofingested paraquat (1,1'-dimethyl-4,4'-dipyridylium) has been assessed using rats and cats. Only Bentonite ...
This article used bentonite impregnated with titanium and silver, respectively, as photocatalyst, to degrade methylene blue (MB) under conditions of MB solutions exposed to sodium lamp and sunlight. Due to the semi-conducting properties of synthesized bentonite catalysts, when exposed to sodium lamp and sunlight, catalyst particles are excited for photocatalysis to achieve decolourization. Afte...
-Infrared spectroscopic, X-ray powder diffraction, diffuse reflectance, and electron-spin resonance examination of homoionic bentonite from Sardinia treated with diazomethane indicates that polymethylene was formed in the interlayer position. Polymerization can be attributed to the acidic properties of the residual water in the interlamellar space, depending on the nature of the exchanged ion. ...
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