title: Denitrification of aging biogas slurry from livestock farm by photosynthetic bacteria.
abstract: Huge amount of aging biogas slurry is in urgent need to be treated properly. However, due to high NH3-N concentration and low C/N ratio, this aging biogas slurry is refractory for traditional methods. Its denitrification has become a big challenge. In this paper, photosynthetic bacteria (PSB) were employed to handle this problem. The results showed denitrification of aging biogas slurry by PSB treatment was promising. The highest removal efficiency of NH3-N reached 99.75%, much higher than all other treatments. The removal of NH3-N followed pseudo zero order reaction under dark-aerobic condition. The better inoculation rate for NH3-N removal was 30%; and aerobic condition was more beneficial for NH3-N removal than anaerobic condition because of different metabolic pathways.
authors.affiliation: School of Environment and Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China.
authors.forename: Anqi
authors.initials: A
authors.lastname: Yang
authors.affiliation: School of Environment and Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China. Electronic address: zgm@ruc.edu.cn.
authors.forename: Guangming
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
authors.affiliation: School of Environment and Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China.
authors.forename: Hangyao
authors.initials: H
authors.lastname: Wang
authors.affiliation: School of Environment and Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Meng
authors.affiliation: School of Environment and Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China.
authors.forename: Hongchen
authors.initials: H
authors.lastname: Wang
authors.affiliation: School of Environment and Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Peng
mesh_terms: D000641:Ammonia / Q000302:isolation & purification; D000693:Anaerobiosis / Q000187:drug effects / Q000528:radiation effects; D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D056804:Biofuels / Q000382:microbiology*; D058440:Denitrification / Q000187:drug effects / Q000528:radiation effects; D000072480:Farms; D005240:Feasibility Studies; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008027:Light; D058751:Livestock; D010100:Oxygen / Q000494:pharmacology; D010788:Photosynthesis / Q000187:drug effects / Q000528:radiation effects
chemical_list: D056804:Biofuels; D000641:Ammonia; D010100:Oxygen
keywords: Aging biogas slurry; Denitrification; Photosynthetic bacteria; Process factor