Sulfite serving as a pretreatment method for alkaline fermentation to enhance short-chain fatty acid production from waste activated sludge
Chemical Engineering Journal(2020)
摘要
•Sulfite pretreatment enhanced SCFAs production from WAS alkaline fermentation.•H2SO3 and HSO3− were the major contributors to the enhanced SCFAs production.•SO32− facilitated the conversion of propionate and butyrate acid to acetate.•Sulfite + pH 9.5 caused positive synergies on fermentation process.
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关键词
Alkaline fermentation,Waste activated sludge,Free sulfurous acid,Short-chain fatty acid
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