title: Acetate favors more phosphorus accumulation into aerobic granular sludge than propionate during the treatment of synthetic fermentation liquor.
abstract: Anaerobic digestion (AD) is an efficient biotechnology widely applied for energy and resource recovery from organic waste and wastewater treatment. The effluent from AD or fermentation liquor containing organic substances like volatile fatty acids (VFAs) and mineral nutrients (such as N and P), however, will trigger serious environmental issues if not properly dealt with. In this study two identical sequencing batch reactors (SBRs), namely Ra and Rp were used to cultivate aerobic granules for P recovery from synthetic fermentation liquor, respectively using acetate and propionate as additional carbon source. Larger and more stable granules were achieved in Ra with higher P removal capability (9.4mgP/g-VSS·d) and higher anaerobic P release (6.9mgP/g-VSS·h). In addition to much higher P content (78mgP/g-SS), bioavailable P in Ra-granules increased to 45mgP/g-SS, approximately 2-times those of seed sludge and Rp-granules. Microbial community analysis indicated that more GAOs were accumulated in Rp-granules.
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
authors.forename: Wei
authors.initials: W
authors.lastname: Cai
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, 94 Weijin Road, Tianjin 300071, China.
authors.forename: Wenli
authors.initials: W
authors.lastname: Huang
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
authors.forename: Huifang
authors.initials: H
authors.lastname: Li
authors.affiliation: Shanghai Biotechnology Corporation, 151 Libing Road, Shanghai 201203, China.
authors.forename: Beina
authors.initials: B
authors.lastname: Sun
authors.affiliation: Shanghai Biotechnology Corporation, 151 Libing Road, Shanghai 201203, China.
authors.forename: Huasheng
authors.initials: H
authors.lastname: Xiao
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
authors.forename: Zhenya
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan. Electronic address: lei.zhongfang.gu@u.tsukuba.ac.jp.
authors.forename: Zhongfang
authors.initials: Z
authors.lastname: Lei
mesh_terms: D000085:Acetates / Q000378:metabolism*; D000332:Aerobiosis; D019149:Bioreactors; D005285:Fermentation; D010758:Phosphorus / Q000378:metabolism*; D011422:Propionates / Q000378:metabolism*; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology*; D062065:Wastewater / Q000737:chemistry* / Q000382:microbiology
chemical_list: D000085:Acetates; D010758:Phosphorus; D011422:Propionates; D012722:Sewage; D062065:Wastewater
keywords: Acetate; Aerobic granular sludge; Fermentation liquor; Phosphorus bioavailability; Phosphorus recovery; Propionate