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Evaluation of the influence of extracellular polymeric substances on the mass transport of substrate within multispecies biofilms
Alternative TitleChin. J. Chem. Eng.
Cao, HB; Li, XG; Jiang, B; Sun, JS; Zhang, Y
2004-08-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume12Issue:4Pages:590-594
AbstractA model, for evaluating the effect of porosity and volume fraction of extracellular polymeric substances (EPS) within multispecies biofilms on the effective diffusivity, is developed and experimentally validated, based on the extraction of EPS from intact biofilms. The amount of EPS in biofilms significantly affects the effective diffusivity. For biofilms with porosity of 77%-95% in the top layers and 54%-58% in the bottom layers, the value of D-e/D-w decreases from 0.52-0.83 in the top layers to 0.23-0.31 in the bottom layers. Generally, the effective diffusivity in the heterotrophic/autotrophic biofilms is slightly lower than that in the heterotrophic biofilms, due to the lower porosity in the heterotrophic/autotrophic biofilms.; A model, for evaluating the effect of porosity and volume fraction of extracellular polymeric substances (EPS) within multispecies biofilms on the effective diffusivity, is developed and experimentally validated, based on the extraction of EPS from intact biofilms. The amount of EPS in biofilms significantly affects the effective diffusivity. For biofilms with porosity of 77%-95% in the top layers and 54%-58% in the bottom layers, the value of D-e/D-w decreases from 0.52-0.83 in the top layers to 0.23-0.31 in the bottom layers. Generally, the effective diffusivity in the heterotrophic/autotrophic biofilms is slightly lower than that in the heterotrophic biofilms, due to the lower porosity in the heterotrophic/autotrophic biofilms.
KeywordBiofilm Extracellular Polymeric Substance Effective Diffusivity
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordEFFECTIVE DIFFUSIVITIES ; DIFFUSION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000224784800025
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/4932
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
2.Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Cao, HB,Li, XG,Jiang, B,et al. Evaluation of the influence of extracellular polymeric substances on the mass transport of substrate within multispecies biofilms[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2004,12(4):590-594.
APA Cao, HB,Li, XG,Jiang, B,Sun, JS,&Zhang, Y.(2004).Evaluation of the influence of extracellular polymeric substances on the mass transport of substrate within multispecies biofilms.CHINESE JOURNAL OF CHEMICAL ENGINEERING,12(4),590-594.
MLA Cao, HB,et al."Evaluation of the influence of extracellular polymeric substances on the mass transport of substrate within multispecies biofilms".CHINESE JOURNAL OF CHEMICAL ENGINEERING 12.4(2004):590-594.
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