Estimation of oxygen effective diffusion coefficient in a non-steady-state biofilm based on response time

doi:10.1007/s11356-018-1227-8

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水质生物转化研究中心

	Estimation of oxygen effective diffusion coefficient in a non-steady-state biofilm based on response time
	Wang, Jian-Hui 1; Li, Hai-Yan 1; Chen, You-Peng 1,2; Liu, Shao-Yang 3; Yan, Peng 1; Shen, Yu 4; Guo, Jin-Song1,2 ; Fang, Fang 1
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2018-04-01
卷号	25 期号:10 页码:9797-9805
关键词	Oxygen microelectrode Wastewater treatment Dynamic oxygen profiles Diffusion distance Response time Dynamic oxygen microdistribution
ISSN号	0944-1344
DOI	10.1007/s11356-018-1227-8
英文摘要	In wastewater treatment, oxygen effective diffusion coefficient (D-eff ) is a key parameter in the study of oxygen diffusion-reaction process and mechanism in biofilms. Almost all the reported methods for estimating the D-eff rely on other biokinetic parameters, such as substrate consumption rate and reaction rate constant. Then, the estimation was complex. In this study, a method independent of other biokinetic parameters was proposed for estimating the dissolved oxygen (DO) D-eff in biofilms. It was based on the dynamic DO microdistribution in a non-steady-state inactive biofilm, which was measured by the oxygen transfer modeling device (OTMD) combining with an oxygen microelectrode system. A pure DO diffusion model was employed, and the expression of the DO D-eff was obtained by applying the analytical solution of the model to a selected critical DO concentration. DO D-eff in the biofilm from the bioreactor was calculated as (1.054 +/- 0.041) x 10(-9) m(2)/s, and it was in the same order of magnitude with the reported results. Therefore, the method proposed in this study was effective and feasible. Without measurement of any other biokinetic parameters, this method was convenient and will benefit the study of oxygen transport-reaction process in biofilms and other biofouling deposits.
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	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000429561900055
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6297]
专题	水质生物转化研究中心
通讯作者	Chen, You-Peng; Guo, Jin-Song
作者单位	1.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm MO, 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.Troy Univ, Dept Chem & Phys, Troy, AL 36082 USA 4.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,Chen, You-Peng,et al. Estimation of oxygen effective diffusion coefficient in a non-steady-state biofilm based on response time[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(10):9797-9805.
APA	Wang, Jian-Hui.,Li, Hai-Yan.,Chen, You-Peng.,Liu, Shao-Yang.,Yan, Peng.,...&Fang, Fang.(2018).Estimation of oxygen effective diffusion coefficient in a non-steady-state biofilm based on response time.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(10),9797-9805.
MLA	Wang, Jian-Hui,et al."Estimation of oxygen effective diffusion coefficient in a non-steady-state biofilm based on response time".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.10(2018):9797-9805.