title: Interaction of short-chain fatty acids carbon source on denitrification.
abstract: Short-chain fatty acids (SCFAs) could be obtained from organic waste anaerobic digestion. The ability and interaction of different SCFAs on denitrification were investigated in this study. Two kinds of SCFAs (acetate and propionate with 5 different ratios) and 4 kinds of SCFAs (acetate, propionate, butyrate and valerate with 10 different ratios) were evaluated. Using acetate (Ac) and propionate (Pr) as carbon sources, the highest nitrate removal efficiency of 97.5% was obtained. When using the mixture of acetate (Ac), propionate (Pr), butyrate (Bu) and valerate (Va) as the carbon source, the highest nitrate removal efficiency obtained was 92.0%. The denitrification performance was affected significantly by different kinds and proportions of SCFAs. In addition, nitrite accumulation and chemical oxygen demand consumption for different contents of SCFAs were also analyzed.
authors.affiliation: a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.
authors.forename: Yue
authors.identifier: http://orcid.org/0000-0002-1681-8152
authors.initials: Y
authors.lastname: Chen
authors.affiliation: a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.|b Key Laboratory of Marine Environment and Ecology, Ministry of Education , Ocean University of China , Qingdao , People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Guo
authors.affiliation: a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.
authors.forename: Jiawen
authors.initials: J
authors.lastname: Zhang
authors.affiliation: a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.
authors.forename: Yangguo
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.
authors.forename: Mengchun
authors.initials: M
authors.lastname: Gao
authors.affiliation: a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.
authors.forename: Zonglian
authors.initials: Z
authors.lastname: She
mesh_terms: D057919:Biological Oxygen Demand Analysis; D002244:Carbon; D058440:Denitrification; D005232:Fatty Acids, Volatile; D011422:Propionates
chemical_list: D005232:Fatty Acids, Volatile; D011422:Propionates; D002244:Carbon
keywords: SCFAs; carbon source; denitrification; nitrate removal; nitrite accumulation