Importance of nutrient availability for soluble microbial products formation during a famine period of activated sludge:Evidence from multiple analyses

作     者：Tahir Maqbool Jinwoo Cho Jin Hur 

作者机构：Department of Environment and Energy Sejong University 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2019年第31卷第10期

页      面：112-121页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (Ministry of Science and ICT) (No. 2017R1A4A1015393) 

主　　题：Soluble microbial products Nutrient availability EEM-PARAFAC SEC-OCD-OND Famine phase 

摘      要：Much remains unknown about compositional variations in soluble microbial products(SMP)with the shift of the substrate condition from a feast to a famine phase in biological treatment *** study demonstrated that the formation of SMP could be suppressed by up to 75%during the famine phase with the addition of essential *** contrast,presence of electron acceptor did not play any significant role during the stress condition,showing the similar amounts of SMP(r=0.98,p0.95).The fluorescence excitation-emission matrix coupled with parallel factor analysis(EEM-PARAFAC)revealed the presence of four different fluorescent components,including two protein-like(C1 and C4),fulvic-like(C2),and humic-like(C3)components,in the SMP and bEPS formed at different *** C1 and C4 showed increasing trends(R^20.95)with the length of starvation in the bioreactors without essential *** availability was found to be a key factor to quench the production of large-sized *** study provides a wealth of information on operation conditions of activated sludge treatment systems to minimize large sized SMP molecules(particularly proteins),which typically exert many environmental concerns to effluent organic matter quality.