American Journal of Environmental Science and Engineering
Volume 2, Issue 4, December 2018, Pages: 72-78
Received: Nov. 23, 2018;
Accepted: Dec. 8, 2018;
Published: Jan. 22, 2019
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Deng Xinhui, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, China
Chen Runhua, College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
Shi Yan, School of Metallurgy and Environment, Central South University, Changsha, China
Zhuo Shengnan, School of Metallurgy and Environment, Central South University, Changsha, China
A new strategy of heavy metal biobleaching was proposed based a fungal strain identified as Aspergillus niger and named F2. F2 displayed great ability of heavy metal resistance and organic acid production. The temperature, pH, carbon source, and nitrogen source have great influences on the heavy metal bioleaching from contaminated soil by F2. The optimum temperature and pH for biobleaching were 30°C and 5.0, respectively. The total heavy metal bioleached by F2 with sucrose, glucose, maltose, lactose and starch as carbon source were 69.86%, 66.57%, 64.59%, 0.92%, and 69.01%, respectively, while the total heavy metal bioleached by F2 with NaNO 3, NH4NO3, peptone, and yeast extract as nitrogen source were 64.10%, 64.05%, 65.87% and 66.27% individually. Our finding provided a new perspective for the treatment of heavy metal contaminated soil.
Preliminary Bioleaching of Heavy Metals from Contaminated Soil Applying Aspergillus niger F2, American Journal of Environmental Science and Engineering.
Vol. 2, No. 4,
2018, pp. 72-78.
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