位置:成果数据库 > 期刊 > 期刊详情页
低强度超声对短程硝化污泥活性的影响
  • ISSN号:1009-6094
  • 期刊名称:《安全与环境学报》
  • 时间:0
  • 分类:X703[环境科学与工程—环境工程]
  • 作者机构:[1]大连理工大学环境学院,大连116024, [2]工业生态与环境工程教育部重点实验室,大连116024
  • 相关基金:国家自然科学基金资助项目(21377014)
中文摘要:

探究在碳纤维毡电极上利用恒电压电化学聚合聚吡咯(PPy)的聚合效果,并利用傅里叶变换红外线(FTIR)及扫描电镜(SEM)对其进行表征;将聚吡咯覆膜改性后的碳纤维毡电极应用到自养反硝化的电极生物膜反应器(BER)中,考察电极改性对自养反硝化电极生物膜反应器的硝酸盐氮去除性能影响,并研究电极改性对生物膜附着量及生物膜微生物群落的影响。结果表明,恒电压电化学聚合能够在碳纤维电极表面形成均匀稳定的聚吡咯膜,从而实现聚吡咯在炭纤维毡电极上的覆膜改性。改性后的电极应用到自养反硝化电极生物膜反应器中,可使反应器对NO_3^--N的去除效率由对照反应器的67.3%增加到83.9%,处理效果提高了24.7%。对反应器内电极生物膜进行生物量测定和扫描电镜分析,可以看到R2反应器中改性电极生物膜附着量明显多于R1反应器中未改性电极生物膜的附着量,说明电极改性有利于生物膜的附着。电极生物膜微生物16S rDNA分析中R1反应器电极生物膜菌落组成中优势菌属为Dechloromonas sp.,而R2反应器电极生物膜的优势菌为Hydrogenophaga sp.(噬氢菌属)和Thauera sp.(陶厄氏菌属),两者有明显差别,并且R2反应器比R1反应器生物膜的菌落组成更多样化,这说明电极材料的改性对电极生物膜微生物群落的组成产生了影响。

英文摘要:

The effect of polypyrrole( PPy) film electropolymerization on carbon felt( CF) electrodes using the potentiostatic method was investigated,and the composite was characterized by scanning electron microscopy( SEM) and Fourier transform infrared( FTIR) spectroscopy. The modified electrode was further applied in a biofilm-electrode hydrogenotrophic denitrification reactor,and its effects on the NO_3--N removal performance of the reactor and the adhesion and microbial community of the biofilm were also examined. The PPy films formed evenly and stably on the CF electrode using the potentiostatic electropolymerization method. Compared with the control reactor,the NO_3--N removal rate of the modified biofilm-electrode hydrogenotrophic denitrification reactor was enhanced by 24. 7%. SEM and 16 S r DNA analyses were performed to analyze the structures and communities of the biofilm on the electrode. More biomass was attached to the modified R2 electrode,which indicated that the approach presented here could improve bacterial adhesion on the cathode. A 16 S rDNA analysis indicated that Hydrogenophaga sp. and Thauera sp. were the dominant isolates in R2,which was different from R1,in which the dominant isolate was Dechloromonas sp. Moreover,the microbial communities of the biofilm on the modified R2 electrode were more diverse than that of the control in R1.

同期刊论文项目
同项目期刊论文
期刊信息
  • 《安全与环境学报》
  • 北大核心期刊(2011版)
  • 主管单位:中国兵器工业集团公司
  • 主办单位:北京理工大学 中国环境科学学会 中国职业安全健康协会
  • 主编:冯长根
  • 地址:北京市海淀区中关村南大街5号
  • 邮编:100081
  • 邮箱:aqyhjxb@263.net;aqyhjxb@wuma.com.cn
  • 电话:010-68913997
  • 国际标准刊号:ISSN:1009-6094
  • 国内统一刊号:ISSN:11-4537/X
  • 邮发代号:2-770
  • 获奖情况:
  • 获首届《CAJ-CD》执行优秀期刊奖,中国科技论文统计源期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),中国中国科技核心期刊,中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版)
  • 被引量:17182