Estimation of relative oxygen metabolic activity microdistribution in biofilms based on the catastrophe point phenomenon during oxygeninfusion processes
文献类型:期刊论文
作者 | Wang, Jian-Hui1; Li, Hai-Yan1; Guo, Jin-Song1,2; Yan, Peng2; Shen, Yu3; Chen, You-Peng1 |
刊名 | ANALYTICAL METHODS |
出版日期 | 2017-09-28 |
卷号 | 9期号:36页码:5293-5300 |
ISSN号 | 1759-9660 |
DOI | 10.1039/c7ay01773a |
英文摘要 | Biofilm reactors are an alternative technology to the conventional activated sludge process for treating wastewater. Understanding the microbial activity microdistribution in heterogeneous biofilms will enable exploration of microbial microdistribution, substrate transfer, and reaction processes inside biofilms. However, the microbial activity obtained from models and the reported measurement techniques are imprecise and complex, respectively. In this study, a convenient approach for estimating the relative microbial oxygen metabolic activity microdistribution inside biofilms is proposed. The oxygen-infusion processes within the biofilm produced by a rotating biological contactor (RBC) were measured by an oxygen microelectrode system. The measurement results showed that there were regular catastrophe points of dissolved oxygen (DO) concentration vs. time, and the DO concentration change rate increased notably at the catastrophe points. This catastrophe point phenomenon was observed for the first time and was analyzed using the three-dimensional diffusion-reaction model. Based on the analysis, it appears that the catastrophe point begins the biomass-limited stage. These points can be used to estimate the relative microbial oxygen metabolic activity microdistribution inside biofilms. This proposed method is convenient and less destructive than other methods. This approach enables the exploration of oxygen transfer-reaction micro-processes, dynamic OUR microdistribution, and microbial microdistribution inside biofilms. |
资助项目 | Chongqing Science and Technology Commission[cstc2014yykfC20001] ; Chongqing Science and Technology Commission[cstc2015shms-ztzx20001] ; National Key Project of China[2015ZX07103-007] |
WOS研究方向 | Chemistry ; Food Science & Technology ; Spectroscopy |
语种 | 英语 |
出版者 | ROYAL SOC CHEMISTRY |
WOS记录号 | WOS:000411530300008 |
源URL | [http://172.16.51.4:88/handle/2HOD01W0/153] |
专题 | 水质生物转化研究中心 |
作者单位 | 1.Chongqing Univ, Key Lab Gorges Reservoir Reg Ecoenvironm MOE 3, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm CAS, Chongqing 400714, Peoples R China 3.Chongqing Technol & Business Univ, Natl Base Int Sci & Technol Cooperat Intelligent, Chongqing 400067, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Jian-Hui,Li, Hai-Yan,Guo, Jin-Song,et al. Estimation of relative oxygen metabolic activity microdistribution in biofilms based on the catastrophe point phenomenon during oxygeninfusion processes[J]. ANALYTICAL METHODS,2017,9(36):5293-5300. |
APA | Wang, Jian-Hui,Li, Hai-Yan,Guo, Jin-Song,Yan, Peng,Shen, Yu,&Chen, You-Peng.(2017).Estimation of relative oxygen metabolic activity microdistribution in biofilms based on the catastrophe point phenomenon during oxygeninfusion processes.ANALYTICAL METHODS,9(36),5293-5300. |
MLA | Wang, Jian-Hui,et al."Estimation of relative oxygen metabolic activity microdistribution in biofilms based on the catastrophe point phenomenon during oxygeninfusion processes".ANALYTICAL METHODS 9.36(2017):5293-5300. |
入库方式: OAI收割
来源:重庆绿色智能技术研究院
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