Ni(Ⅱ),Cu(Ⅱ),Zn(Ⅱ)及Cd(Ⅱ)对Paracoccus versutus LYM好氧反硝化过程的影响
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- 英文论文题名：Effects of Ni(Ⅱ),Cu(Ⅱ),Zn(Ⅱ) and Cd(Ⅱ) on the aerobic denitrification process of Paracoccus versutus LYM
- 论文作者：张玉 ; 孙超越 ; 周集体
- 英文论文作者：Yu Zhang ; Chaoyue Sun ; Jiti Zhou ; School of Environmental Science and Technology ; Dalian University of Technology
- 年：2016
- 作者机构：大连理工大学环境学院;
- 论文关键词：重金属 ; 好氧反硝化 ; Paracoccus versutus LYM
- 英文论文关键词：Heavy metals ; Aerobic denitrification ; Paracoccus versutus LYM
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十六分会：环境化学
- 语种：中文
- 分类号：Q93
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十六分会 ; 环境化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：214k
- 原文格式：D
- 会议级别：全国
摘要
在C/N=20最优碳氮比条件下,批式实验考查了Ni(II),Cu(II),Zn(II)及Cd(II)四种常见重金属离子对具有好氧反硝化功能的Paracoccus versutus LYM的好氧生长、培养基pH变化、NO2--N积累、NO_3~--N降解及气态反硝化产物的影响。结果显示,在好氧开放体系中,四种金属离子对好氧反硝化过程的抑制顺序为Cd(II)>Cu(II)>Ni(II)>Zn(II)。Cu(II)严重抑制亚硝酸盐还原酶活性。对密闭体系中气态反硝化产物考查结果发现,去除的NO_3~--N主要转化为N_2,且整个反硝化过程没有检测出N_2O。
In order to obtain more information about inhibitory effects of heavy metals on aerobic denitrification process,the effects of four common heavy metals,namely Ni(II),Cu(II),Zn(II) and Cd(II),on Paracoccus versutus LYM aerobic growth,culture media pH,NO2--N accumulation,NO3--N degradation and gaseous denitrification products were investigated by batch assays at the optimal C/N ratio of 20.The results showed the inhibitory order on aerobic denitrification process was Cd(II) > Cu(II) > Ni(II) > Zn(II) in the open system.Cu(II) inhibited the activity of nitrite reductase seriously.The major fate of removed NO3--N was N2,which was the predominant gaseous denitrification products,without N2 O detected in the closed system.
In order to obtain more information about inhibitory effects of heavy metals on aerobic denitrification process,the effects of four common heavy metals,namely Ni(II),Cu(II),Zn(II) and Cd(II),on Paracoccus versutus LYM aerobic growth,culture media pH,NO2--N accumulation,NO3--N degradation and gaseous denitrification products were investigated by batch assays at the optimal C/N ratio of 20.The results showed the inhibitory order on aerobic denitrification process was Cd(II) > Cu(II) > Ni(II) > Zn(II) in the open system.Cu(II) inhibited the activity of nitrite reductase seriously.The major fate of removed NO3--N was N2,which was the predominant gaseous denitrification products,without N2 O detected in the closed system.
引文
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[3]Chen,M.X.,Wang,W.C.,Feng,Y.,Zhu,X.H.,Zhou,H.Z.,Tan,Z.L.,Li X.D.,2014.Bioresour.Technol.167,456-461.
[4]Li,M.T.,Liu,J.H.,Zhao,S.J.,Wang,Z.X.,Hao,L.L.,2013.J.Environ.Sci.Health,Part B.48,885-892.
[5]Shi,Z.;Zhang,Y.;Zhou,J.;Chen,M.;Wang,X.J.Bioresour Technol.2013,148:144-148.
[6]Hu,Z.Q.,Chandran,K.,Grasso,D.,Smets,B.F.,2003.Environ.Sci.Technol.37,728-734.
[7]?e?en,F.,Semerci,N.,Geyik,A.G.,2010a.J.Chem.Technol.Biotechnol.85,520-528.
[8]?e?en,F.,Semerci,N.,Geyik,A.G.,2010b.J.Hazard.Mater.178,619-627.