Synergic action of Fe and bacteria in gold bearing chalcopyrite bioleaching
In this paper, gold bearing chalcopyrite bioleaching is studied in flasks with different initial Fe + , Fe and bacterial concentration. The results show that chalcopyrite consumes acid in the bioleaching process. The induced reaction is happened to Fe + in high concentration. Jarosite and H+ are produced to main acidity for bacterial survival on the surface of chalcopyrite. The bacteria are inhibited by Fe + and their oxidization is weakened. The bacterial activity decreases. Fe2+ in high concentration is to provide a favor to recovery of coenzyme in vivo of bacteria and to chalcopyrite leaching.
bacteria gold bearing chalcopyrite adsorption bioleaching jarosite
Pengcheng Ma Hongying Yang Zhanqi Han
School of Materials Science and Metallurgy of Northeastern University No. 11, L,ane 3, Wenhua Road, Heping District, 110819, Shenyang, China
国际会议
The 19th International Biohydrometallurgy Symposium(第19届国际生物湿法冶金大会 IBS2011)
长沙
英文
293-297
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）