Title: Effects of electrolysis stress on the growth of Microcystis aeruginosa

Authors: Yunfeng Xu, Yan Wang, Yalin Wang, Huihui Yuan, Jinping Jia

Addresses: School of Environmental Science and Engineering, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, PR China. ' School of Environmental Science and Engineering, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, PR China. ' School of Environmental Science and Engineering, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, PR China. ' School of Environmental Science and Engineering, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, PR China. ' School of Environmental Science and Engineering, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, PR China

Abstract: As a result of electrolysis, biomass was controlled to some extent and the protein content per gram wet algae decreased. The viability of the algae was measured by the flow cytometry. Without taking into account the consumption of substrate, Microcystis aeruginosa growth kinetics was demonstrated that the electrolysis would inhibit the algal growth. At the same time, photosynthetic efficiency (Fv/Fm) of the treated sample was clearly lower than that of the control sample. TEM observations showed that the algal cellularity was destroyed by electrolysis, including thylakoid, gas vesicles, starch grain and the lipid globule.

Keywords: electrolysis stress; M. aeruginosa; chlorophyll; membrane permeability; fluorescence; TEM; transmission electron microscopy; Microcystis aeruginosa; biomass; algae; flow cytometry; growth kinetics; photosynthetic efficiency.

DOI: 10.1504/IJEP.2009.025137

International Journal of Environment and Pollution, 2009 Vol.37 No.2/3, pp.339 - 348

Published online: 13 May 2009 *

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