氧化亚铁硫杆菌对合成辉铜矿和铜蓝的微生物氧化作用。
Microbiological oxidation of synthetic chalcocite and covellite by Thiobacillus ferrooxidans.
作者信息
Sakaguchi H, Torma A E, Silver M
出版信息
Appl Environ Microbiol. 1976 Jan;31(1):7-10. doi: 10.1128/aem.31.1.7-10.1976.
The microbiological oxidation of synthetic chalcocite and covellite has been investigated using an adapted strain of Thiobacillus ferrooxidans. Biodegradation of chalcocite was found to be 90 to 100% and that of covellite 45 to 60%. Optimum conditions for the oxidation of chalcocite were: pH, 1.7 to 2.3; temperature, 35 C; and ferric iron concentration in the range of 0.004 to 0.01 M. For covellite, the optimum conditions were: pH 2.3; temperature, 35 C; and ferric iron concentration in the range of 0.004 to 0.02 M. The energies of activation were determined to be 16.3 kcal (ca. 6.8 X 10(4) J) per mol and 11.7 kcal (ca. 4.8 X 10(4) J) per mol for chalcocite and covellite, respectively.
利用一株经过驯化的氧化亚铁硫杆菌，对合成辉铜矿和铜蓝的微生物氧化作用进行了研究。发现辉铜矿的生物降解率为90%至100%，铜蓝的生物降解率为45%至60%。氧化辉铜矿的最佳条件为：pH值1.7至2.3；温度35℃；三价铁浓度在0.004至0.01M范围内。对于铜蓝，最佳条件为：pH值2.3；温度35℃；三价铁浓度在0.004至0.02M范围内。确定辉铜矿和铜蓝的活化能分别为每摩尔16.3千卡（约6.8×10⁴焦耳）和每摩尔11.7千卡（约4.8×10⁴焦耳）。
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