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OALib Journal期刊
ISSN: 2333-9721
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菌株rhodococcussp.chr-9和exiguobacteriumsp.chr-43的除铬(vi)特性
DOI: 10.3724/SP.J.1145.2012.00971, PP. 971-977
Keywords: 铬(vi),红球菌属,微小杆菌,生物修复,环境因素,污水处理
Abstract:
为了解环境因素对生物除铬(vi)的影响，并为铬(vi)污染环境的生物强化治理提供高效菌株，采用选择培养的方法从制革废水污泥样品中分离到2株革兰氏阳性铬(vi)去除菌――rhodococcussp.chr-9和exiguobacteriumsp.chr-43.菌株chr-9和chr-43在25~40℃内均能够较好生长，并高效去除铬(vi)，菌株chr-9和chr-43的最适生长ph均为7.0~9.0，菌株在ph7.0的培养基中去除铬(vi)的效率最高.加入0.2~0.5mol/l的no3-、so42-和cl-能够促进chr-9和chr-43的生长以及去除铬(vi)的效率.在含铬(vi)培养基中同时接种chr-9和chr-43时，chr-9促进菌株chr-43的生长，并提高菌株去除铬(vi)的效率.研究表明，ph、温度、阴离子和环境中的其它生物对铬(vi)的去除有明显影响.图7表1参24
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