Journal article

Biogenic Mn oxides for effective adsorption of Cd from aquatic environment

You-Ting Meng, Yuan-Ming Zheng, Li-Mei Zhang, Ji-Zheng He

Environmental Pollution | ELSEVIER SCI LTD | Published : 2009

Abstract

Biogenic Mn oxides exert important controls on trace metal cycling in aquatic and soil environments. A Mn-oxidizing bacterium Bacillus sp. WH4 was isolated from Fe-Mn nodules of an agrudalf in central China. The biogenic Mn oxides formed by mediation of this Mn oxidizing microorganism were identified as short-ranged and nano-sized Mn oxides. Cd adsorption isotherms, pH effect on adsorption and kinetics were investigated in comparison with an abiotic Mn oxide todorokite. Maximum adsorption of Cd to the biogenic Mn oxides and todorokite was 2.04 and 0.69 mmol g(-1) sorbent, respectively. Thus, the biogenic Mn oxides were more effective Cd adsorbents than the abiotic Mn oxide in the aquatic env..

View full abstract

University of Melbourne Researchers

Grants

Awarded by Ministry of Science and Technology of China


Awarded by Chinese Academy of Sciences


Awarded by Natural Science Foundation of China


Funding Acknowledgements

This work was supported by the Ministry of Science and Technology of China (2005CB121104), the Chinese Academy of Sciences (KZCX1-YW-06-03), and the Natural Science Foundation of China (50621804, 40671172).