摘要
研究了不同质量分数的聚乙二醇2000(PEG2000)对氧化亚铁硫杆菌氧化Fe^(2+)活性、碲矿溶解性及细菌浸出碲矿中碲过程的影响。结果表明,添加质量分数为0~0.09%的PEG2000能促进细菌对Fe^(2+)的氧化和碲矿的溶解。添加0.09%的PEG2000促进细菌氧化碲矿效果最好,浸出24d后碲的浸出量为123.79mg/L,是不添加时的1.45倍。而当添加质量分数大于0.12%时,PEG2000对氧化亚铁硫杆菌氧化碲矿开始有抑制作用,可能是溶液中PEG2000浓度过高影响了细菌的氧化活性。
Effects of mass fraction of polyethylene glycol 2000 （PEG2000） on activity of bacterium oxidized ferrous ion, solubility of tellurium ore, and process of bacterial leaching of low-grade tellurium by Acidithiobacillus Ferrooxidans were studied. The results show that adding PEG2000 with mass fraction of 0-0.09% can promote bacteria to oxidize ferrous ion and dissolve sample. Addition of 0. 09% mass fraction of PEG 2000 has the best oxidizing effect on tellurium ore with bacteria. After leaching for 24 days, the extracting amount of tellurium is 123.79 mg/L, which is 1.5 times of that with no addition of PEG2000. When addition mass fraction of PEG2000 is 0. 12% above, PEG2000 has inhibitory effects on Acidithiobacillus ferrooxidans to oxidize tellurium ore, because high concentration of PEG2000 in solution may affect oxidative activity of bacterium.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第5期33-36,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
四川省重点研发项目(2017GZ0293
2017GZ0387)
四川碲铋产业技术研究院平台项目(2015510010000322)
