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本文研究了可溶的亚铁离子和固体基质 (硫、黄铁矿和黄铜矿 )等能源物质存在时生长的嗜酸性的矿质化学营养氧化亚铁硫杆菌。用Zeta电位、接触角、FT -IR光谱和FT -Ramman光谱研究了细胞的表面性质。细胞在黄铁矿和黄铜矿表面上的吸附等温线测定结果表明 ,细胞开始在黄铁矿上吸附的细胞平衡浓度比黄铜矿上的吸附浓度要低得多。在考虑细胞几何尺寸时发现 ,细胞吸附密度未达到其单层吸附密度。在细胞存在情况下 ,用黄药作捕收剂时黄铁矿浮选完全受到抑制 ,而黄铜矿浮选未受到影响。这些结果表明 ,在中性pH下有T f 菌存在时 ,可以从黄铁矿中优先浮选黄铜矿
This paper studies the eosinophilic mineral nutrient-tolerant Thiobacillus ferrooxidans that grows in the presence of soluble ferrous ions and solid substrates (sulfur, pyrite and chalcopyrite). The surface properties of the cells were investigated by Zeta potential, contact angle, FT-IR spectroscopy and FT-Raman spectroscopy. The adsorption isotherms of the cells on the surface of pyrite and chalcopyrite show that the equilibrium concentration of cells adsorbed on pyrite began to be much lower than that of chalcopyrite. In considering the cell geometry, it was found that the cell adsorption density did not reach its monolayer adsorption density. In the presence of cells, pyrite flotation was completely inhibited with the use of xanthate as a collector, while chalcopyrite flotation was unaffected. These results show that chalcopyrite can be preferentially flotated from pyrite in the presence of Tf bacteria at neutral pH