Environmental Earth Sciences

, Volume 67, Issue 7, pp 2161–2167 | Cite as

Effects of heavy metals on the performance of anaerobic sulfidogenic reactor using rape straw as carbon source

Original Article
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Abstract

Effects of Zn2+, Cu2+ and Cd2+ in the synthetic acid mine drainage on the performance of the anaerobic sulfidogenic reactor using rape straw as carbon source were explored. Two different cases were respectively observed for the different metal dosages: stimulatory at lower concentrations and toxic/inhibitory at higher concentrations. Cellulose and hemicellulose were the major components hydrolyzed in the rape straw. Analysis of the heavy metals distribution in the anaerobic digested solid residue showed that adsorption and precipitation were the major mechanisms for the removal of heavy metals. This was also confirmed by the results of scanning electron microscopy and energy-dispersive spectrometry analysis.

Keywords

Anaerobic sulfidogenic reactor Biomineralization Cellulosic biomass Heavy metal Sulfate reducing bacteria (SRB) 
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Notes

Acknowledgments

The authors wish to thank the NSFC (41130206, 40902019 and 41102214), National Key Basic Research Program of China (2007CB815603).

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  1. 1.School of Resources and Environmental EngineeringHefei University of TechnologyHefeiChina

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