Bioleaching of chalcopyrite at 40C by enrichment culture obtained from some fumarolic areas
We sampled many kinds of mud from some fumarolic areas in Japan and cultured bacteria from the samples using some kinds of media for bioleaching of chalcopyrite at 40℃. There was a big difference among the succession behaviour of the enrichment culture media. The bioleaching of chalcopyrite concentrate from an iron-oxide hosted copper-gold (IOCG) deposit in Chile was investigated in shake flasks with the enrichment culture. In the flasks with the enrichment cultures, the leaching rate of copper was accelerated constantly with the increase of the microorganism concentration and the oxidationreduction potential (ORP) value. But the sudden rise of the ORP value caused deceleration of the leaching rate and the upper limit of copper leached.
bioleaching chalcopyrite enrichment culture fumarolic areas
Masatoshi Sakoda Tadashi Chida Naoki Sato
Mine Pollution Control Dept. , Japan Oil, Gas and Metals National Corporation (JOGMEC) Toranomon-twi Metals Technology Center, JOGMEC, Furudate9-3, Kosaka-kouzan, Kosaka,Kazuno-gun, 017 -0202, Akita, J
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
190-200
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）