Enterobacter aerogenes metabolites enhance Microcystis aeruginosa biomass recovery for sustainable bioflocculant and biohydrogen production
Enterobacter aerogenes metabolites enhance Microcystis aeruginosa biomass recovery for sustainable bioflocculant and biohydrogen production
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DOI：
10.1016/j.scitotenv.2018.03.327
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
徐亮
中科院分区：
文献类型：
--
作者：
徐亮
We report a recycling bioresource involving harvesting of Microcystis aeruginosa using the bioflocculant (MBF-32) produced by Enterobacter aerogenes followed by the recovery of the harvested M. aeruginosa as themain substrate for the sustainable production of MBF-32 and biohydrogen. The experimental results indicate that the efficiency of bioflocculation exceeded 90% under optimal conditions. The harvested M. aeruginosa was further recycled as the main substrate for the supply of necessary elements. The highest yield (3.6 ± 0.1 g/L) of MBF-32 could be obtained from 20 g/L of wet biomass of M. aeruginosa with an additional 20 g/L of glucose as the extra carbon source. The highest yield of biohydrogen was 35 mL of H2/g (dw) algal biomass, obtained from.20 g/L of wet biomass of M. aeruginosa with an additional 10 g/L of glycerol. Transcriptome analyses indicated that MBF-32 was mainly composed of polysaccharide and tyrosine/tryptophan proteins. Furthermore, NADH synthase and polysaccharide export-related genes were found to be up-regulated.
