Study on Isolation and Degradation Mechanism of Bacteria for the Biodegradation of Microcystins (MC-LR)

Article Preview

Abstract:

A microcystin-degrading strain named as T1 was isolated from Taihu Lake sediment. Based on the morphological observations, physiological-biochemical analysis and tests for biodegradability, the study results showed that the degrading rate of MC-LR reached 60%~70% by T1 strain after 48 hours reaction. The optimal treatment parameters of T1 strain were as follows: pH 7.0, inoculum concentration 8% and rotating speed 120 rpm. Moreover, the concentration of carbon source has some stimulating effect on the degradation of MC-LR. The study has significant reference and actual application value for the biodegradation of MC-LR in eutrophic water.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

300-304

Citation:

Online since:

September 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] ZHANG Wei-hao, XU Xiao-qing, QIU Chang-qiang. Advance in Study on Microcystins in Aquatic Environment[J]. Research of Environmental Sciences, 2001, 14(2): pp.57-61.

Google Scholar

[2] Duy T.N., Lam P.K.S., Shaw G. R. Toxicology and risk assessment of fresh water cyanobacterial(blue-green algae) toxins in water. Rev. Environ. Contam. Toxicol., 2000, 163: pp.113-118.

DOI: 10.1007/978-1-4757-6429-1_3

Google Scholar

[3] YANG Jing-dong, YIN Yu-fen, HU Liang-bin, et al. Biodegradation of Microcystins by Indigenous Mixed Bacterial Population JSM004[J]. Journal of Agro-Environment Science, 2009, 28(8): pp.1669-1675.

Google Scholar

[4] Hitzfeld B C, Hoger S J, Dietrich D R. Cyanobacterial toxins: removal during drinking water treatment, and human risk assessment[J]. Environ Health Perspect, 2000, 108: pp.113-122.

DOI: 10.2307/3454636

Google Scholar

[5] Pouria S. A fatal microcystin intoxication in haemodialysis unit in Caruaru[J]. Brazil Lancet, 1998, 352(2): pp.21-26.

DOI: 10.1016/s0140-6736(97)12285-1

Google Scholar

[6] MA Fang, REN Nan-qi, YANG Ji-xian. Pollution Control and Microbiology Experiment[M]. Harbing: HARBIN INSTITUTE OF TECHNOLOGY PRESS, (2002).

Google Scholar

[7] Dong Xiu-zhu, Identification Manual of Common Bacterial Systems. Beijing: Science Press, (2001).

Google Scholar

[8] Zhou Jie, He Hong-hai, Yan Hai, Lu Le, Lin Hai. Biodegradation of microcystins by bacterial community enriched from the sediment of Dianchi Lake[J]. Techniques and Equipment for Environmental Pollution Control, 2006, 7(4): pp.30-34.

Google Scholar