Immobilization of As(V) in Rhizopus oryzae Investigated by Batch and XAFS Techniques.
Immobilization of As(V) in Rhizopus oryzae Investigated by Batch and XAFS Techniques.
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DOI：
10.1021/acsomega.6b00260
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发表时间：
2016-11-30
期刊：
影响因子：
4.1
通讯作者：
Wang X
中科院分区：
文献类型：
--
作者：
Song W;Wang X;Wen T;Yu S;Zou Y;Sun Y;Hayat T;Wang X
Arsenic (As) contamination in aqueous solutions has become an increasing public concern due to the immense harm to human health. Herein, bioaccumulation of arsenate (As(V)) by Rhizopus oryzae in aqueous systems was investigated under different environmental conditions, such as different pH’s, ionic strengths, mycelia dosages, mycelia growths, and temperatures. The results showed that As(V) could be bioaccumulated efficiently by R. oryzae, and the maximum bioaccumulation capacity of As(V) in R. oryzae was 52.4 mg/g at T = 299 K, which was much higher than that for other biomaterials under similar conditions. R. oryzae generated a higher content of thiol compounds under As(V) stress to immobilize As(V) from aqueous solutions. X-ray absorption near-edge spectroscopy analysis indicated that As(V) was partly reduced to As(III) with increasing contact time, which increased As(V) bioaccumulation in mycelia. In addition, extended X-ray absorption fine structure analysis showed that the As–S complex played an important role in As(V) immobilization by mycelia. This study provided an in-depth investigation of intracellular As speciation and coordination in R. oryzae on the molecular scale, which was crucial to understand the interaction mechanisms of As(V) with fungi during environmental cleanup.
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影响因子：
3.4
作者：
Masneuf-Pomarede, I.;Le Jeune, C.;Dubourdieu, D.
通讯作者：
Dubourdieu, D.
DOI：
10.1007/s00128-014-1212-y
发表时间：
2014-03-01
影响因子：
2.7
作者：
Bhargavi, S. D.;Savitha, J.
通讯作者：
Savitha, J.
影响因子：
11.4
作者：
Karthikeyan, S.;Balasubramanian, R.;IYer, C. S. P.
通讯作者：
IYer, C. S. P.
影响因子：
11.4
作者：
Mateos-Naranjo, Enrique;Andrades-Moreno, Luis;Redondo-Gomez, Susana
通讯作者：
Redondo-Gomez, Susana
影响因子：
17.1
作者：
Chandra, Vimlesh;Park, Jaesung;Kim, Kwang S.
通讯作者：
Kim, Kwang S.