Abstract
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.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
