期刊名称：Beni-Suef University Journal of Basic and Applied Sciences
印刷版ISSN：2314-8535
电子版ISSN：2314-8543
出版年度：2018
卷号：7
期号：4
页码：688-694
DOI：10.1016/j.bjbas.2018.08.001
语种：English
出版社：Elsevier
摘要：AbstractA total of twenty-five isolates of fungi from the wastewater and sludge samples of a steel industry were screened for their resistance to Cu(II) and Ni(II). Three strains were finally selected and identified asAspergillus awamori,Aspergillus flavusandAspergillus niger.The growth behavior and concurrent bioaccumulation of Cu(II) and Ni(II) by each fungus was investigated as a function of pH of the growth medium and concentration of Cu(II) and Ni(II). pH for maximum growth with concurrent bioaccumulation of Cu(II) and Ni(II) was observed, respectively as 4.0 and 5.0 forA. awamori, 5.0 and 5.0 forA. flavusand 4.0 and 5.0 forA. niger. The growth behavior with increasing heavy metals concentration was also examined as tolerance index. Synergistic and inhibitory effect on growth with lower and higher concentration of both heavy metals, respectively observed for each fungus. Our finding indicates that the resistant strains isolated from their contaminated habitat have better pertinence and application in heavy metals bioremediation.
关键词：Aspergillus awamori;Aspergillus flavus;Aspergillus niger;Heavy metal;Tolerance index
