File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Determination of the fractal dimension of microbial flocs from the change in their size distribution after breakage

TitleDetermination of the fractal dimension of microbial flocs from the change in their size distribution after breakage
Authors
Issue Date2005
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/est
Citation
Environmental Science And Technology, 2005, v. 39 n. 8, p. 2731-2735 How to Cite?
AbstractThe fractal dimension is of ultimate importance in the description of the properties and behavior of microbial flocs in biological wastewater treatment systems. However, the methods for the measurement of the fractal dimension have not been well-established. In this study, a new method is developed to determine the fractal dimension of biological flocs in activated sludge (AS) suspensions. The new method utilizes the particle size distribution (PSD) of the sludge flocs measured by image processing under a microscope. Mechanical breakage is conducted for the sludge sample to create a change in the PSD. On the basis of the self-similarity of fractal aggregates, the fractal dimension of the AS flocs can be calculated from a comparison between the original PSD and the altered PSD by breakage. It is determined that the sludge flocs grown in laboratory bioreactors with sludge ages of 5, 10, and 20 days have fractal dimensions of 2.07, 2.21, and 2.36. The sludge collected from a full-scale AS treatment plant has a fractal dimension of 1.99. This new method overcomes the deficiencies of other existing methods. It is easier to use and provides more reliable results in the determination of the fractal dimension of biological flocs and other similar aggregate samples. © 2005 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/71343
ISSN
2015 Impact Factor: 5.393
2015 SCImago Journal Rankings: 2.664
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, XYen_HK
dc.contributor.authorLeung, RPCen_HK
dc.date.accessioned2010-09-06T06:31:08Z-
dc.date.available2010-09-06T06:31:08Z-
dc.date.issued2005en_HK
dc.identifier.citationEnvironmental Science And Technology, 2005, v. 39 n. 8, p. 2731-2735en_HK
dc.identifier.issn0013-936Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/71343-
dc.description.abstractThe fractal dimension is of ultimate importance in the description of the properties and behavior of microbial flocs in biological wastewater treatment systems. However, the methods for the measurement of the fractal dimension have not been well-established. In this study, a new method is developed to determine the fractal dimension of biological flocs in activated sludge (AS) suspensions. The new method utilizes the particle size distribution (PSD) of the sludge flocs measured by image processing under a microscope. Mechanical breakage is conducted for the sludge sample to create a change in the PSD. On the basis of the self-similarity of fractal aggregates, the fractal dimension of the AS flocs can be calculated from a comparison between the original PSD and the altered PSD by breakage. It is determined that the sludge flocs grown in laboratory bioreactors with sludge ages of 5, 10, and 20 days have fractal dimensions of 2.07, 2.21, and 2.36. The sludge collected from a full-scale AS treatment plant has a fractal dimension of 1.99. This new method overcomes the deficiencies of other existing methods. It is easier to use and provides more reliable results in the determination of the fractal dimension of biological flocs and other similar aggregate samples. © 2005 American Chemical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/esten_HK
dc.relation.ispartofEnvironmental Science and Technologyen_HK
dc.subject.meshEnvironmental Monitoring - methods-
dc.subject.meshFlocculation-
dc.subject.meshSewage - chemistry - microbiology-
dc.subject.meshWaste Disposal, Fluid - methods-
dc.subject.meshWater Microbiology-
dc.titleDetermination of the fractal dimension of microbial flocs from the change in their size distribution after breakageen_HK
dc.typeArticleen_HK
dc.identifier.emailLi, XY:xlia@hkucc.hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/es049177+en_HK
dc.identifier.pmid15884370-
dc.identifier.scopuseid_2-s2.0-17644409448en_HK
dc.identifier.hkuros105193en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17644409448&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue8en_HK
dc.identifier.spage2731en_HK
dc.identifier.epage2735en_HK
dc.identifier.isiWOS:000228428900047-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridLeung, RPC=8508925300en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats