Decontamination of multiple heavy metals-containing effluents through microbial biotechnology

Journal of Hazardous Materials
Minxi WuLe Deng

Abstract

To decontaminate heavy metal-containing waste water, a microbial biotechnology was developed by using the synergy between Sulfate reducing bacteria (SRB), Bacillus cereus (B. cereus) and Camellia oleifera cake (COC). In this process the COC degradation assisted by B.cereus, created an anoxic environment and provided energy and nutrition for SRB. Both of B. cereus and SRB played significant roles through biosorption, bioaccumulation and biosurfactant production. Meanwhile, a flotation technology commonly used in many effluent treatments has been led into this system for increasing the efficiency as well. After desorption and regeneration with acid and deionized water, the biosorbents could be reused to adsorb metal ions. 97% of heavy metals removal was achieved by the proposed technology. For multiple heavy metals-containing solutions, the capacities are in the order of Cd2+>Zn2+>Cu2+.

Citations

Feb 23, 2019·Environmental Science and Pollution Research International·Carlos E R BarquilhaEdson A da Silva
May 17, 2018·Environmental Science and Pollution Research International·Liyuan ChaiXu Yan
Apr 17, 2019·Environmental Science and Pollution Research International·Elizabeth Carvajal-Flórez, Santiago-Alonso Cardona-Gallo
Jan 20, 2021·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Adoum Mahamat Ahmat, Yannick Mamindy-Pajany
Jun 14, 2021·Journal of Hazardous Materials·Sandhya MishraShaohua Chen
Mar 7, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Chunya LiShaozao Tan

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