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% and increases by 4.60% compared to direct cyanide of the dust. The effective removal of arsenic can not effectively improve the gold leaching efficiency. Fe, As and C removal rate, at 15% sulfuric...浸金的影响 研究了氢氧化钠预浸出过程氢氧化钠浓度对烟尘中砷碳脱除率,碱浸渣率及碱浸渣中金氰化浸出率的影响,试验结果如图1所示. 图1 氢氧化钠浓度对烟尘中有害元素脱除率,碱浸渣率及碱浸渣中金氰化浸出率的影响 Fig. 1 Effects of NaOH concentrations on removal rate of harmful element in dust......
Effect of arsenic content and quenching temperature on solidification microstructure and arsenic distribution in iron–arsenic alloysWen-bin Xin1,2,Bo Song1,2,Chuan-gen Huang1,2,Ming-ming Song1,2,Gao... Beijing摘 要:The solidification microstructure, grain boundary segregation of soluble arsenic, and characteristics of arsenic-rich phases were systematically......
], followed by arsenic removal from the cytosol[3]. At present, an operon containing four arsenic-resistance genes (arsB, arsC, arsH, arsR) has been discovered in At. ferrooxidans. Genes for arsenic resistance... potential role of hydrogen peroxide in the detoxication of the trivalent arsenic species[J]. Toxicol Appl Pharmacol, 2004, 198: 327-335. [24] YUAN Tao, LUO Qi-fang. Study on the removal of arsenite......
High level arsenic resistance in bacteria present in biooxidation tanks used to treat gold-bearing arsenopyrite concentrates: A review D. E. RAWLINGS Department of Microbiology... gold-bearing arsenopyrite concentrates became adapted to high concentrations of arsenic over a number of years. The dominant microorganisms, Acidithiobacillus caldus and Leptospirillum ferriphilum......
by nanoscale zero-valent iron[J]. Chemistry World, 2007, 48(3): 144-147. [11] Kanel S R, Greneche J M, Choi H. Arsenic(V) removal from groundwater using nano scale zero-valent iron as a colloidal...识码:A 文章编号:1672-7207(2008)02-0307-04 Removal of acid fuchsine using nanoscale zero valent iron REN Hai-ping, WU Liu-ming, ZHAO Shou-chun (School......
; 文献标志码:A 文章编号:1672-7207(2012)03-0821-06 Effect of valences of arsenic, antimony on removal rates of arsenic, antimony and bismuth in copper... Corporation Limited, Jinchang 737100, China) Abstract: Arsenic(Ⅴ) and antimony(Ⅴ) in copper electrolyte were reduced to arsenic(Ⅲ) and antimony(Ⅲ) with the aid of sulfur dioxide, and n(As(Ⅴ))/n(As(T......
ferrooxidans BY-3 under arsenic stress GAO Qi-yu(高启禹)1, 2, TANG De-ping(唐德平)1, SONG Peng(宋鹏)1,ZHOU Jian-ping(周剑平)3, LI Hong-yu(李红玉)1, 4 1. Institute of Microbiology, School of Life Sciences, Lanzhou... staining assay, which have more obvious inhibitory effects on A. ferrooxidans biofilms under arsenic environment. Their structures were verified through IR and NMR identification. The morphological......
, and then is evaporation crystallized. Key words: copper electrolyte; sulfur dioxide; purification; copper sulfate; arsenic trioxide 1 Introduction Removal of As, Sb and Bi impurities from copper electrolytes.... The purification of copper electrolyte by chemical reduction method: CN, 200910227119 [P]. 2009-10-09. (in Chinese) [8] LINDROOS L, VIRTANEN H. Method for the removal of arsenic from sulfuric acid......
% and roasting time of 120 min, 98.40 wt% of arsenic removal rate and 80.40 wt% antimony recovery rate could be obtained. In addition, the "As2O3" product could be used for preparing ferric arsenate which...]. The antimony was transformed into insoluble matter during the leaching process and separated from the solution by filtration [24, 29–31]. The arsenic removal rate could be up to 92 wt% using......
