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六十年代发现,细菌可在红土矿物中溶解金。根据这个研究,萃液中金的最大浓度达到1.5mg/L。但是在一些试验中浸出283天后金的最终回收率仅为82％。还发现,一定类型的真菌不仅能够从矿石中回收金,还可以用生物吸附法从浸出液中脱出溶解金。实践证明,真菌能从浸出液的表面吸附金而使其分离出来。然后滤出真菌,并进行干燥和燃烧。有多种活性茵在接触15～20小时后,从浸出溶液中分离出的金达到98％。为了从浸出液中分离金,用生物吸附金的试验过程如下:将米曲霉(Aspergillusoryzae)菌饱
In the sixties, bacteria were found to dissolve gold in laterite minerals. According to this study, the maximum gold concentration in the extract reached 1.5 mg / L. However, the final gold recovery after only 283 days of leaching in some tests was only 82%. It has also been found that certain types of fungi not only recover gold from the ore, but also remove the gold from the leachate by means of biosorption. Practice has proved that fungi can adsorb gold from the surface of the leaching solution to separate them. The fungus is then filtered off and dried and burned. There are a variety of active in the contact after 15 to 20 hours, the gold from the leaching solution to 98%. In order to separate the gold from the leachate, the process of biosorption of gold was as follows: The Aspergillus oryzae was full