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ZJUS-B
Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology)  2005, Vol. 6 Issue ( 3): 4-    DOI: 10.1631/jzus.2005.B0171
    
Bioremediation potential of spirulina: toxicity and biosorption studies of lead
CHEN Hong, PAN Shan-shan
Department of Environmental Engineering, Zhejiang University, Hangzhou 310013, China
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Abstract  This study examines the possibility of using live spirulina to biologically remove aqueous lead of low concentration (below 50 mg/L) from wastewater. The spirulina cells were first immersed for seven days in five wastewater samples containing lead of different concentrations, and the growth rate was determined by light at wavelength of 560 nm. The 72 h-EC50 (72 h medium effective concentration) was estimated to be 11.46 mg/L (lead). Afterwards, the lead adsorption by live spirulina cells was conducted. It was observed that at the initial stage (0¨C12 min) the adsorption rate was so rapid that 74% of the metal was biologically adsorbed. The maximum biosorption capacity of live spirulina was estimated to be 0.62 mg lead per 105 alga cells.

Key words： Bioadsorption      Bioremediation      Spirulina      Lead Environmental Engineering     
Received: 09 February 2004     
CLC:  X172  
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CHEN Hong
PAN Shan-shan
Cite this article:

CHEN Hong, PAN Shan-shan. Bioremediation potential of spirulina: toxicity and biosorption studies of lead. Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology), 2005, 6( 3): 4-.

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http://www.zjujournals.com/xueshu/zjus-b/10.1631/jzus.2005.B0171     OR     http://www.zjujournals.com/xueshu/zjus-b/Y2005/V6/I 3/4

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