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时间:2020-02-29
《微氧条件下以甲烷为碳源的反硝化实验研究 优先出版.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第37卷第5期环境科学学报Vol.37,No.52017年5月ActaScientiaeCircumstantiaeMay,2017DOI:10.13671/j.hjkxxb.2016.0352周祥玉,赵云飞,李东,等.2017.微氧条件下以甲烷为碳源的反硝化实验研究[J].环境科学学报,37(5):1704-1710ZhouXY,ZhaoYF,LiD,etal.2017.Experimentalstudyondenitrificationusingmethaneascarbonsourceundermicroaerobiccondition[J].Ac
2、taScientiaeCircumstantiae,37(5):1704-1710微氧条件下以甲烷为碳源的反硝化实验研究121111,*周祥玉,赵云飞,李东,闫志英,代玉梅,刘晓风1.中国科学院成都生物研究所,成都6100412.成都市固体废弃物卫生处置场,成都610041收稿日期:2016-07-12修回日期:2016-09-01录用日期:2016-09-01摘要:为探清微氧条件下以甲烷为碳源的反硝化是甲烷好氧氧化偶联反硝化(AME-D),还是甲烷厌氧氧化偶联反硝化(ANME-D),本研究以污水处理厂厌氧污泥为接种物,在微氧条件下以甲烷为碳源进行硝酸盐
3、和亚硝酸盐反硝化的富集培养,考察硝酸盐和亚硝酸盐的反硝化速率,并对富集培养物的微生物群落和甲烷单加氧酶功能基因进行分析.结果表明:微氧条件下硝氮/亚硝氮的还原主要以AME-D过程为主,稳定阶-1-1-1-1段硝氮和亚硝氮的平均去除速率分别为3.69mg·L·d(以N计)和18.04mg·L·d(以N计),富集培养物中的优势微生物为甲基球菌科(Methylococcaceae)中的甲基单胞菌属(Methylomonas),相对含量为21.86%.关键词:甲烷好氧氧化偶联反硝化(AME-D);甲烷厌氧氧化偶联反硝化(ANME-D);富集培养;群落结构文章编号
4、:0253-2468(2017)05-1704-07中图分类号:X703文献标识码:AExperimentalstudyondenitrificationusingmethaneascarbonsourceundermicroaerobiccondition121111,*ZHOUXiangyu,ZHAOYunfei,LIDong,YANZhiying,DAIYumei,LIUXiaofeng1.ChengduInstituteofBiology,ChineseAcademyofSciences,Chengdu6100412.ChengduMunicip
5、alSolidWasteDisposalSite,Chengdu610041Received12July2016;receivedinrevisedform1September2016;accepted1September2016Abstract:Inordertoidentifywhetherdenitrificationusingmethaneascarbonsourceundermicroaerobicconditionisaerobicmethaneoxidationcoupledtodenitrification(AME-D)oranaerob
6、icmethaneoxidationcoupledtodenitrification(ANME-D),thedenitrifyingenrichmentofanaerobicsludgefrom--wastewatertreatmentplantwascarriedoutusingmethaneascarbonsourceandNO3/NO2asnitrogensourceundermicroaerobiccondition.Thedenitrifying--ratesofNO3andNO2wereinvestigatedandthemicrobialc
7、ommunitystructurewasanalyzed.TheresultshowedthatAME-Dplayedamajorroleinnitrate-1-1andnitritereduction,andtheaveragedenitrificationratesofnitrateandnitriteduringstablestagewere3.69and18.04mgN·L·d,respectively.ThegenusofMethylomonaswasdominantwiththerelativeabundanceof21.86%.Keywor
8、ds:aerobicmethaneoxidationcoupledtodenit
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