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Article: Effective diffusion coefficients of glucose in artificial biofilms

TitleEffective diffusion coefficients of glucose in artificial biofilms
Authors
Issue Date2005
PublisherSelper Ltd. The Journal's web site is located at http://www.environtechnol.co.uk
Citation
Environmental Technology, 2005, v. 26 n. 2, p. 155-160 How to Cite?
AbstractA technique using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry was demonstrated for the determination of effective diffusion coefficient (De) of an inert solute in biofilm. Glucose was the selected solute, and agarose (1%) hydrogel films containing various concentrations of activated sludge biomass were used to simulate the biofilm. Tbe agarose films were formed on the surface of an internal reflection crystal in contact with a bulk solution containing 0.5M glucose. Glucose molecules diffused through the film by concentration gradient, and the glucose concentration at the biofilm-crystal interface was measured over time by HATR-FTTR. Based on the glucose concentration and film thickness, the De of glucose was calculated according to the Fick's Law. Results showed that De of glucose in the biomass-free agarose films averaged 6.46±0.21×1O-6 cm2 s-1, which is about 5% lower than the average reported De of glucose in water. The De of glucose decreased with increasing biomass concentration in the artificial biofilm. For the agarose films containing 0.45%, 0.90% and 1.80% of biomass, the De of glucose were lowered to 6.38±0.22×10-6 , 6.08±0.23×10-6 and 5.62±0.17×10-6 cm2 s-1, respectively. © Selper Ltd, 2005.
Persistent Identifierhttp://hdl.handle.net/10722/71670
ISSN
2015 Impact Factor: 1.76
2015 SCImago Journal Rankings: 0.640
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, Ten_HK
dc.contributor.authorFang, HHPen_HK
dc.date.accessioned2010-09-06T06:34:06Z-
dc.date.available2010-09-06T06:34:06Z-
dc.date.issued2005en_HK
dc.identifier.citationEnvironmental Technology, 2005, v. 26 n. 2, p. 155-160en_HK
dc.identifier.issn0959-3330en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71670-
dc.description.abstractA technique using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry was demonstrated for the determination of effective diffusion coefficient (De) of an inert solute in biofilm. Glucose was the selected solute, and agarose (1%) hydrogel films containing various concentrations of activated sludge biomass were used to simulate the biofilm. Tbe agarose films were formed on the surface of an internal reflection crystal in contact with a bulk solution containing 0.5M glucose. Glucose molecules diffused through the film by concentration gradient, and the glucose concentration at the biofilm-crystal interface was measured over time by HATR-FTTR. Based on the glucose concentration and film thickness, the De of glucose was calculated according to the Fick's Law. Results showed that De of glucose in the biomass-free agarose films averaged 6.46±0.21×1O-6 cm2 s-1, which is about 5% lower than the average reported De of glucose in water. The De of glucose decreased with increasing biomass concentration in the artificial biofilm. For the agarose films containing 0.45%, 0.90% and 1.80% of biomass, the De of glucose were lowered to 6.38±0.22×10-6 , 6.08±0.23×10-6 and 5.62±0.17×10-6 cm2 s-1, respectively. © Selper Ltd, 2005.en_HK
dc.languageengen_HK
dc.publisherSelper Ltd. The Journal's web site is located at http://www.environtechnol.co.uken_HK
dc.relation.ispartofEnvironmental Technologyen_HK
dc.subject.meshBiofilmsen_HK
dc.subject.meshBioreactorsen_HK
dc.subject.meshDiffusionen_HK
dc.subject.meshGlucose - chemistry - metabolismen_HK
dc.subject.meshSpectroscopy, Fourier Transform Infrareden_HK
dc.subject.meshWaste Disposal, Fluiden_HK
dc.titleEffective diffusion coefficients of glucose in artificial biofilmsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0959-3330&volume=26&spage=155&epage=160&date=2005&atitle=Effective+diffusion+coefficients+of+glucose+in+artificial+biofilmsen_HK
dc.identifier.emailZhang, T:zhangt@hkucc.hku.hken_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityZhang, T=rp00211en_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid15791796-
dc.identifier.scopuseid_2-s2.0-16344388955en_HK
dc.identifier.hkuros104768en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-16344388955&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume26en_HK
dc.identifier.issue2en_HK
dc.identifier.spage155en_HK
dc.identifier.epage160en_HK
dc.identifier.isiWOS:000228258000005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridZhang, T=24470677400en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK

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