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 degradati...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 1.0 m 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.展开更多
With the increasing concern about the serious global energy crisis and high energy consumption during high content solid wastes （HCSWs） treatment, microbial fuel cell （MFC） has been recognized as a promising resou...With the increasing concern about the serious global energy crisis and high energy consumption during high content solid wastes （HCSWs） treatment, microbial fuel cell （MFC） has been recognized as a promising resource utilization approach for HCSW stabilization with simultaneous electrical energy recovery. In contrast to the conventional HCSW stabilization processes, MFC has its unique advantages such as direct bio-energy conversion in a single step and mild reaction conditions （viz., ambient temperature, normal pressure, and neutral pH）. This review mainly introduces some important aspects of electricity generation from HCSW and its stabilization in MFC, focusing on： （1） MFCs with different fundamentals and configurations designed and constructed to produce electricity from HCSW; （2） performance of wastes degradation and electricity generation; （3） prospect and deficiency posed by MFCs with HCSWas substrates. To date, the major drawback of MFCs fueled by HCSW is the lower power output than those using simple substrates. HCSW hydrolysis and decomposition would be a major tool to improve the performance of MFCs. The optimization of parameters is needed to push the progress of MFCs with HCSW as fuel.展开更多
基金supported by the National Natural Science Foundation of China(no.51408159)the State Key Laboratory of Urban Water Resource and Environment(no.2016DX05)the China Postdoctoral Science Foundation funded projects(nos.2013T60375 and 2012M520744)
文摘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 1.0 m 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.
基金Acknowledgements The authors gracefully acknowledge funding sup- ported by the National Nature Science Foundation of China （Grant No. 51378144） , and the support by State Key Laboratory of Urban Water Resource and Environment （2016DX05）, Harbin Institute of Technology.
文摘With the increasing concern about the serious global energy crisis and high energy consumption during high content solid wastes （HCSWs） treatment, microbial fuel cell （MFC） has been recognized as a promising resource utilization approach for HCSW stabilization with simultaneous electrical energy recovery. In contrast to the conventional HCSW stabilization processes, MFC has its unique advantages such as direct bio-energy conversion in a single step and mild reaction conditions （viz., ambient temperature, normal pressure, and neutral pH）. This review mainly introduces some important aspects of electricity generation from HCSW and its stabilization in MFC, focusing on： （1） MFCs with different fundamentals and configurations designed and constructed to produce electricity from HCSW; （2） performance of wastes degradation and electricity generation; （3） prospect and deficiency posed by MFCs with HCSWas substrates. To date, the major drawback of MFCs fueled by HCSW is the lower power output than those using simple substrates. HCSW hydrolysis and decomposition would be a major tool to improve the performance of MFCs. The optimization of parameters is needed to push the progress of MFCs with HCSW as fuel.
