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
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
Awarded by Ministry of Science and Technology of China
Awarded by Chinese Academy of Sciences
Awarded by Natural Science Foundation of China
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).