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冶金；胞外聚合层；多糖 中图分类号:TF80 文献标志码:A Role of extracellular polymers of bacteria during arsenic-bearing gold concentrate biooxidation process FU Yao, YANG Hong-ying, CUI Ri... to explore the role of the extracellular polymers in the biooxidation process of arsenic-bearing gold concentrate. The pH value, potential of hydrogen, arsenic ion concentration, bacterial count......
the maximum arsenic adsorption of 38% with the adsorption capacity of 0.995 mg·g-1 in a 130 mg·L-1 solution of As(V) after 30 min of agitation. However, chemically activated Zn Fe2O4 showed the maximum arsenic adsorption of approximately 99% with the adsorption capacity of 21.460 mg·g-1 under the same conditions.These results showed that the weak adsorption performance of mechano-thermally......
sulfide[J]. The Chinese Journal of Nonferrous Metals, 2014, 24(11): 2900-2905. [13] CHAKRAVARTY S, DUREJA V, BHATTACHARYYA G, et al. Removal of arsenic from groundwater using low cost ferruginous manganese... of nanometer sized zirconium dioxide to As(Ⅲ) and As(Ⅴ)[J]. J Wuhan Inst Chem Tech, 2004, 26(3): 1-3. [15] KORNGOLD E, BELAYEV N, ARONOV L. Removal of arsenic from drinking water by anion exchangers[J......
the optimized conditions, copper and arsenic can be effectively leached from copper smelting dust, leaving residue as a suitable lead resource. The average leaching efficiencies of copper, arsenic and iron... extraction, which contains both several valuable metals such as copper, lead, zinc and bismuth and undesirable toxic materials like arsenic and cadmium [1,2]. In recent years, the increase of copper......
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and arsenic nearly keep a constant. A possible reason is that free gold is of wonderful selectivity against pyrite with organic activators.A new method to enhance gold recovery is proposed.关键词:......
that the total consumption of NaOH in alkaline leaching is only 40% of those theoretically calculated under the conditions of full oxidization at the same oxidation of arsenic to ar-senate and sulfur......
J. Cent. South Univ. (2020) 27: 1424-1431 DOI: https://doi.org/10.1007/s11771-020-4378-y Modeling heap biooxidation of arsenic-bearing gold ore LI Jia-feng(李佳峰)1, ZHONG Shui-ping(衷水平)2, TONG Lin...% to 78.08% in 80 d. Boltzmann model matches the actual oxidation effect better and the model equations were obtained. The model predicted that the oxidation extents of arsenic and sulfur are 58.577......
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pressure oxidation leaching, arsenic and selenium were dissolved into the solution, while copper, tellurium and other metals were oxidized and remained in the alkaline leaching residue. Then copper... the direct leaching was performed in alkaline solution or sulfuric acid solution. Arsenic and antimony cannot be removed together under different oxidation methods when the process of alkaline......
