Bioremediation of cadmium-contaminated paddy soil using an autotrophic and heterotrophic mixture
Menglong Xu, Yazi Liu, Yan Deng, Siyuan Zhang, Xiaodong Hao, Ping Zhu, Jieyi Zhou, Huaqun Yin, Yili Liang, Hongwei Liu, Xueduan Liu, Lianyang Bai, Luhua Jiang, Huidan Jiang
Abstract
), and Co-sys had a minor effect on the growth of soil indigenous microbes. In Co-sys, the content of the four Cd fractions all decreased compared with other leaching systems. The analysis of soil physicochemical parameters during the leaching process showed that pH and ORP (oxidation reduction potential) were not the only determinants for Cd removal efficiency in Co-sys, synergistic metabolic activities of autotrophic and heterotrophic strains may be other determinants. This study demonstrated that cooperative bioremediation may prove to be a safe and efficient technique for field application in heavy metal soil pollution.