Kiel H, Schwartz W
Z Allg Mikrobiol. 1980;20(10):627-36. doi: 10.1002/jobm.3630201005.
Leaching of metals with carbon-heterotrophic microorganisms and organic acids as active agents has been performed with Timna copper ore containing 1.1% copper as carbonates and silicate and with some other metal oxides. Aspergillus niger surface cultures on a 14% sucrose fermentation medium yeilded 87.3% of total copper from 10% suspension within 2 weeks of leaching. On sulfite liquor as an industrial waste product A. niger solubilized 73.8% Cu within 4 weeks. In percolators with 14% sucrose medium up to 1780 ppm copper were found in solution. In leaching experiments with a sea water medium containing 7% sucrose only 684 ppm Cu were soluble. Leaching with lactobacilli containing whey yielded 83.4% of the total copper in 4 weeks.
利用碳异养微生物和有机酸作为活性剂对金属进行浸出，已在含1.1%铜（以碳酸盐和硅酸盐形式存在）的蒂姆纳铜矿以及一些其他金属氧化物上进行。黑曲霉在14%蔗糖发酵培养基上的表面培养物在浸出2周内从10%的悬浮液中浸出了87.3%的总铜。以亚硫酸盐废液作为工业废品时，黑曲霉在4周内使73.8%的铜溶解。在装有14%蔗糖培养基的渗滤器中，溶液中发现高达1780 ppm的铜。在含有7%蔗糖的海水培养基的浸出实验中，仅有684 ppm的铜可溶。用含乳清的乳酸菌进行浸出，4周内浸出了总铜的83.4%。
