title: Transformation of erythromycin during secondary effluent soil aquifer recharging: Removal contribution and degradation path.
abstract: Erythromycin (ERY), a widely used antibiotic, has recently been detected in municipal secondary effluents and poses serious threats to human health during wastewater reusing. In this study, the removal, fate, and degradation pathway of ERY in secondary effluent during soil aquifer treatment was evaluated via laboratory-scale SAT tests. Up to a 92.9% reduction of ERY in synthetic secondary effluent was observed in 1.0m depth column system, which decreased to 64.7% when recharged with wastewater treatment plant secondary effluent. XRD-fractionation results demonstrated that the transphilic acid and hydrophobic acid fractions in secondary effluent compete for the adsorption sites of the packed soil and lead to a declined ERY removal. Moreover, aerobic biodegradation was the predominant role for ERY removal, contributing more than 60% reduction of ERY when recharged with synthetic secondary effluent. Destruction of 14-member macrocyclic lactone ring and breakdown of two cyclic sugars (l-cladinose and d-desosamine) were main removal pathways for ERY degradation, and produced six new intermediates.
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China; Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA. Electronic address: weill333@163.com.
authors.forename: Liangliang
authors.initials: L
authors.lastname: Wei
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Kena
authors.initials: K
authors.lastname: Qin
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Ningbo
authors.initials: N
authors.lastname: Zhao
authors.affiliation: Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Noguera
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Qiu
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China. Electronic address: zhql1962@163.com.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Center of Science & Technology of Construction of the Ministry of Housing and Urban Rural Development of P. R. China, Beijing 100835, China.
authors.forename: Xiangjuan
authors.initials: X
authors.lastname: Kong
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Weixian
authors.initials: W
authors.lastname: Zhang
authors.affiliation: School of Municipal & Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Felix Tetteh
authors.initials: FT
authors.lastname: Kabutey
mesh_terms: D004784:Environmental Monitoring; D004917:Erythromycin / Q000032:analysis / Q000737:chemistry*; D060587:Groundwater / Q000737:chemistry*; D008956:Models, Chemical; D012987:Soil / Q000737:chemistry; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*
chemical_list: D004917:Erythromycin; D012987:Soil; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: DOM; Degradation pathway; Erythromycin; Fate; Soil aquifer treatment