title: Influence of fertilizer draw solution properties on the process performance and microbial community structure in a side-stream anaerobic fertilizer-drawn forward osmosis - ultrafiltration bioreactor.
abstract: In this study, a side-stream anaerobic fertilizer-drawn forward osmosis (FDFO) and ultrafiltration (UF) membrane bioreactor (MBR) hybrid system was proposed and operated for 55days. The FDFO performance was first investigated in terms of flux decline with various fertilizers draw solution. Flux decline was very severe with all fertilizers due to the absence of aeration and the sticky property of sludge. Flux recovery by physical cleaning varied significantly amongst tested fertilizers which seriously affected biofouling in FDFO via reverse salt flux (RSF). Besides, RSF had a significant impact on nutrient accumulation in the bioreactor. These results indicated that nutrient accumulation negatively influenced the anaerobic activity. To elucidate these phenomena, bacterial and archaeal community structures were analyzed by pyrosequencing. Results showed that bacterial community structure was affected by fertilizer properties with less impact on archaeal community structure, which resulted in a reduction in biogas production and an increase in nitrogen content.
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), Post Box 129, Broadway, NSW 2007, Australia; School of Civil, Environmental and Architectural Engineering, Korea University, 1-5 Ga, Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea.
authors.forename: Youngjin
authors.initials: Y
authors.lastname: Kim
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological & Environmental Science & Engineering (BESE), Thuwal 23955-6900, Saudi Arabia.
authors.forename: Sheng
authors.initials: S
authors.lastname: Li
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), Post Box 129, Broadway, NSW 2007, Australia.
authors.forename: Laura
authors.initials: L
authors.lastname: Chekli
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), Post Box 129, Broadway, NSW 2007, Australia.
authors.forename: Sherub
authors.initials: S
authors.lastname: Phuntsho
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological & Environmental Science & Engineering (BESE), Thuwal 23955-6900, Saudi Arabia.
authors.forename: Noreddine
authors.initials: N
authors.lastname: Ghaffour
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological & Environmental Science & Engineering (BESE), Thuwal 23955-6900, Saudi Arabia.
authors.forename: TorOve
authors.initials: T
authors.lastname: Leiknes
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), Post Box 129, Broadway, NSW 2007, Australia. Electronic address: Hokyong.Shon-1@uts.edu.au.
authors.forename: Ho Kyong
authors.initials: HK
authors.lastname: Shon
mesh_terms: D019149:Bioreactors; D005308:Fertilizers; D008567:Membranes, Artificial; D009995:Osmosis; D045483:Rivers; D014462:Ultrafiltration; D018508:Water Purification
chemical_list: D005308:Fertilizers; D008567:Membranes, Artificial
keywords: Anaerobic osmotic bioreactor; Biogas production; Fertilizer-drawn forward osmosis; Pyrosequencing; Salt accumulation