Potential acute effects of suspended aluminum nitride (AlN) nanoparticles on soluble microbial products (SMP) of activated sludge  

作　　者：Lijie Zhou Weiqin Zhuang Xin Wang Ke Yu Shufang Yang Siqing Xia 

机构地区：[1]State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology,Shenzhen Key Laboratory of Drinking Water Source Safety Control,Shenzhen Key Laboratory of Emerging Contaminants Detection & Control in Water Environment,Shenzhen Academy of Environmental Sciences [2]State Key Laboratory of Pollution Control and Resource Reuse,College of Environmental Science and Engineering,Tongji University [3]Department of Civil and Environmental Engineering,University of Auckland [4]School of Environment and Energy,Peking University Shenzhen Graduate School [5]Shenzhen Municipal Design & Research Institute Co.,Ltd

出　　处：《Journal of Environmental Sciences》2017年第7期284-292,共9页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51378368);the Foundation of State Key Laboratory of Pollution Control and Resource Reuse(Tongji University),China(No.PCRRT16003);Shenzhen Science and Technology Research Fund(No.CXZZ20150330151321966)

摘　　要：The study aims to identify the potential acute effects of suspended aluminum nitride（Al N）nanoparticles（NPs） on soluble microbial products（SMP） of activated sludge.Cultured activated sludge loaded with 1,10,50,100,150 and 200 mg/L of Al N NPs were carried out in this study.As results showed,Al N NPs had a highly inverse proportionality to bacterial dehydrogenase and OUR,indicating its direct toxicity to the activated sludge viability.The toxicity of Al N NPs was mainly due to the nano-scale of Al N NPs.In SMP,Al N NPs led to the decrease of polysaccharide and humic compounds,but had slight effects on protein.The decrease of tryptophan-like substances in SMP indicated the inhibition of Al N NPs on the bacterial metabolism.Additionally,Al N NPs reduced obviously the molecular weight of SMP,which might be due to the nano-scale of Al N.The study aims to identify the potential acute effects of suspended aluminum nitride（Al N）nanoparticles（NPs） on soluble microbial products（SMP） of activated sludge.Cultured activated sludge loaded with 1,10,50,100,150 and 200 mg/L of Al N NPs were carried out in this study.As results showed,Al N NPs had a highly inverse proportionality to bacterial dehydrogenase and OUR,indicating its direct toxicity to the activated sludge viability.The toxicity of Al N NPs was mainly due to the nano-scale of Al N NPs.In SMP,Al N NPs led to the decrease of polysaccharide and humic compounds,but had slight effects on protein.The decrease of tryptophan-like substances in SMP indicated the inhibition of Al N NPs on the bacterial metabolism.Additionally,Al N NPs reduced obviously the molecular weight of SMP,which might be due to the nano-scale of Al N.

关 键 词：Aluminum nitride nanoparticles Topic Soluble microbial products（SMP） Activated sludge Bacterial viability 

分 类 号：X703[环境科学与工程—环境工程]