Tolerance and Bioaccumulation of Arsenate by Aspergillus Oryzae TLWK-09 Isolated from Arsenic-Contaminated Soils
Tolerance and Bioaccumulation of Arsenate by Aspergillus Oryzae TLWK-09 Isolated from Arsenic-Contaminated Soils
复制标题
砷污染土壤中米曲霉TLWK-09对砷酸盐的耐受性和生物富集
DOI:
10.1007/s11270-018-3822-1
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发表时间:
2018-05
期刊:
影响因子:
--
通讯作者:
Li Lvmu
中科院分区:
文献类型:
--
作者:
Liang Jun;Diao Huan;Song Wencheng;Li Lvmu
Eleven indigenous arsenic-tolerant fungi were isolated from arsenic-contaminated mine tailing and identified by molecular biology methods. Among them, Aspergillus oryzae (denoted as A. oryzae TLWK-09) had high tolerance and bioaccumulation of As(V). The maximum tolerance to As(V) concentration of A. oryzae TLWK-09 reached 5000 mg/L. As(V) bioaccumulation on A. oryzae TLWK-09 in the aqueous system was investigated under different environmental conditions such as mycelia dosage, contact time, pH, and ionic strength. Bioaccumulation data of As(V) were fitted to Langmuir model, and the maximum uptake capacity of A. oryzae TLWK-09 for As(V) was 54.12 mg/g at 301 K. The morphological structures of mycelia changed obviously under As(V) stress by scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis. The analysis of Fourier transform infrared spectroscopy (FTIR) indicated the presence of carboxyl, hydroxyl, and amino groups on the fungal mycelia, which showed that these groups accounted for As(V) bioaccumulation. These results suggested that A. oryzae TLWK-09 could be an efficient and promising bioremediation material for As(V) pollution.
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影响因子:
4.1
作者:
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影响因子:
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DOI:
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期刊:
New Scientist (1971)
影响因子:
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Adam Vaughan
DOI:
--
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2010
期刊:
International Journal of Natural and Applied Sciences
影响因子:
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DOI:
10.1016/j.scitotenv.2012.09.053
发表时间:
2012-12
期刊:
The Science of the total environment
影响因子:
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通讯作者:
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