Isolation and Characterization of Chromium Reducing Bacteria

Y. Gao, Q. Cheng, T. T. Hu, H. J. Ji, Z. Y. Zhu, Q. Xu, A. M. Li, Y. Yang

Abstract

Removal of highly toxic Cr (VI) using bioremediation can start a new way for effective treatment of chromium contamination. Therefore, the chromate-reducing strain G-13 under alkaline conditions was isolated from chromium factory. G-13 was identified as Micrococcus sp..The strain of G-13 was selected to study the resistance of Cr (VI) and its ability to reduce Cr (VI) under different culture conditions. The results showed that the optimum temperature and pH for the strain were found to be 30℃ and 7.0 or 8.0, respectively. The percent reduction of Cr(VI) for 50,100, 200, 400 and 500 mg/L of initial concentration at 96 h of incubation were 82.1%, 63.6%, 34.5%, 21.2% and 9.1%, respectively. The Micrococcus sp.G-13 strain was remarkable under the condition of glycerol and sodium lactate as the electron donor, which could reduce 50 mg/L Cr (VI) to 0 within 36 h, and the reduction rate was 100%. Consequently, the isolation of bacteria can be exploited for the bioremediation of Cr (VI) pollution. It is hoped that this study can provide theoretical basis for the treatment of environmental chromium pollution.

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Paper Citation


in Harvard Style

Gao Y., Cheng Q., Hu T., Ji H., Zhu Z., Xu Q., Li A. and Yang Y. (2018). Isolation and Characterization of Chromium Reducing Bacteria.In Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE, ISBN 978-989-758-344-5, pages 605-613. DOI: 10.5220/0007563606050613


in Bibtex Style

@conference{iwemse18,
author={Y. Gao and Q. Cheng and T. T. Hu and H. J. Ji and Z. Y. Zhu and Q. Xu and A. M. Li and Y. Yang},
title={Isolation and Characterization of Chromium Reducing Bacteria},
booktitle={Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE,},
year={2018},
pages={605-613},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007563606050613},
isbn={978-989-758-344-5},
}


in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE,
TI - Isolation and Characterization of Chromium Reducing Bacteria
SN - 978-989-758-344-5
AU - Gao Y.
AU - Cheng Q.
AU - Hu T.
AU - Ji H.
AU - Zhu Z.
AU - Xu Q.
AU - Li A.
AU - Yang Y.
PY - 2018
SP - 605
EP - 613
DO - 10.5220/0007563606050613