文献类型： 外文期刊
作者： Ye, Binhui 1 ; Luo, Yating 1 ; He, Junyu 4 ; Sun, Lijuan 5 ; Long, Bibo 1 ; Liu, Qinglin 1 ; Yuan, Xiaofeng 3 ; Dai, Peib 1 ;
作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China
2.Zhejiang Univ, Coll Environm & Resource Sci, MOE Key Lab Environm Remediat & Ecol Hlth, Hangzhou 310058, Zhejiang, Peoples R China
3.Zhejiang Chinese Med Univ, Coll Life Sci, Hangzhou 310053, Zhejiang, Peoples R China
4.Zhejiang Univ, Ocean Coll, Zhoushan 316021, Peoples R China
5.Shanghai Acad Agr Sci, Inst ECOenvironm & Plant Protect, Shanghai 20
关键词： Penicillium oxalicum SL2; Pb; Bioimmobilization; Transformation; Glutathione
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
ISSN： 0960-8524
年卷期： 2018 年 264 卷
页码：
收录情况： SCI
摘要： Fungi Penicillium oxalicum SL2 was applied for Pb2+ bioremediation in aqueous solution in this study. After 7 days of incubation at different initial concentrations of Pb2+ (0, 100, 500 and 2500 mg L-1), most of Pb2+ were removed (90, 98.3, and 86.2%), the maximum Pb content in mycelium reached about 155.6 mg g(-1) dw. Meanwhile, the formation of extracellular secondary minerals and intracellular Pb-complex were observed and identified, the speciation of Pb in mycelium was also detected by X-ray absorption near-edge structure (XANES) spectroscopy, i.e., Pb-oxalate, Pb-citrate, Pb-hydrogen phosphate and Pb-glutathione analogues. In addition, content of glutathione and oxidized glutathione was increased under the exposure of Pb2+, which implied that glutathione might play a key role in Pb immobilization and detoxification in P. oxalicum SL2. This study elucidated partial mechanisms of Pb immobilization and speciation transformation of this strain, providing an alternative biomaterial in the bioremediation of Pb-contaminated wastewater.
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