Mixing characteristics of sludge simulant in a model anaerobic digester.
Identifieur interne : 002119 ( PubMed/Curation ); précédent : 002118; suivant : 002120Mixing characteristics of sludge simulant in a model anaerobic digester.
Auteurs : Siew Cheng Low [Australie] ; Nicky Eshtiaghi [Australie] ; Paul Slatter [Australie] ; Jean-Christophe Baudez [France] ; Rajarathinam Parthasarathy [Australie]Source :
- Bioprocess and biosystems engineering [ 1615-7605 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Sewage.
- Models, Chemical.
Abstract
This study aims to investigate the mixing characteristics of a transparent sludge simulant in a mechanically agitated model digester using flow visualisation technique. Video images of the flow patterns were obtained by recording the progress of an acid-base reaction and analysed to determine the active and inactive volumes as a function of time. The doughnut-shaped inactive region formed above and below the impeller in low concentration simulant decreases in size with time and disappears finally. The 'cavern' shaped active mixing region formed around the impeller in simulant solutions with higher concentrations increases with increasing agitation time and reaches a steady state equilibrium size, which is a function of specific power input. These results indicate that the active volume is jointly determined by simulant rheology and specific power input. A mathematical correlation is proposed to estimate the active volume as a function of simulant concentration in terms of yield Reynolds number.
DOI: 10.1007/s00449-015-1530-4
PubMed: 26739143
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France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Irstea, UR TSCF, 03150, Montoldre</wicri:regionArea></affiliation></author><author><name sortKey="Parthasarathy, Rajarathinam" sort="Parthasarathy, Rajarathinam" uniqKey="Parthasarathy R" first="Rajarathinam" last="Parthasarathy">Rajarathinam Parthasarathy</name><affiliation wicri:level="1"><nlm:affiliation>School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, VIC, 3001, Australia. rchrp@rmit.edu.au.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, VIC, 3001</wicri:regionArea></affiliation></author></analytic><series><title level="j">Bioprocess and biosystems engineering</title><idno type="eISSN">1615-7605</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Models, Chemical</term><term>Sewage (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Eaux d'égout ()</term><term>Modèles chimiques</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Sewage</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Models, Chemical</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Eaux d'égout</term><term>Modèles chimiques</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study aims to investigate the mixing characteristics of a transparent sludge simulant in a mechanically agitated model digester using flow visualisation technique. Video images of the flow patterns were obtained by recording the progress of an acid-base reaction and analysed to determine the active and inactive volumes as a function of time. The doughnut-shaped inactive region formed above and below the impeller in low concentration simulant decreases in size with time and disappears finally. The 'cavern' shaped active mixing region formed around the impeller in simulant solutions with higher concentrations increases with increasing agitation time and reaches a steady state equilibrium size, which is a function of specific power input. These results indicate that the active volume is jointly determined by simulant rheology and specific power input. A mathematical correlation is proposed to estimate the active volume as a function of simulant concentration in terms of yield Reynolds number.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">26739143</PMID><DateCreated><Year>2016</Year><Month>02</Month><Day>23</Day></DateCreated><DateCompleted><Year>2016</Year><Month>11</Month><Day>14</Day></DateCompleted><DateRevised><Year>2016</Year><Month>12</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1615-7605</ISSN><JournalIssue CitedMedium="Internet"><Volume>39</Volume><Issue>3</Issue><PubDate><Year>2016</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Bioprocess and biosystems engineering</Title><ISOAbbreviation>Bioprocess Biosyst Eng</ISOAbbreviation></Journal><ArticleTitle>Mixing characteristics of sludge simulant in a model anaerobic digester.</ArticleTitle><Pagination><MedlinePgn>473-83</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00449-015-1530-4</ELocationID><Abstract><AbstractText>This study aims to investigate the mixing characteristics of a transparent sludge simulant in a mechanically agitated model digester using flow visualisation technique. Video images of the flow patterns were obtained by recording the progress of an acid-base reaction and analysed to determine the active and inactive volumes as a function of time. The doughnut-shaped inactive region formed above and below the impeller in low concentration simulant decreases in size with time and disappears finally. The 'cavern' shaped active mixing region formed around the impeller in simulant solutions with higher concentrations increases with increasing agitation time and reaches a steady state equilibrium size, which is a function of specific power input. These results indicate that the active volume is jointly determined by simulant rheology and specific power input. A mathematical correlation is proposed to estimate the active volume as a function of simulant concentration in terms of yield Reynolds number.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Low</LastName><ForeName>Siew Cheng</ForeName><Initials>SC</Initials><AffiliationInfo><Affiliation>School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, VIC, 3001, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Eshtiaghi</LastName><ForeName>Nicky</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, VIC, 3001, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Slatter</LastName><ForeName>Paul</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>ATC Williams, 1141 Hay St, West Perth, WA, 6005, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Baudez</LastName><ForeName>Jean-Christophe</ForeName><Initials>JC</Initials><AffiliationInfo><Affiliation>Irstea, UR TSCF, 03150, Montoldre, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Parthasarathy</LastName><ForeName>Rajarathinam</ForeName><Initials>R</Initials><Identifier Source="ORCID">http://orcid.org/0000-0003-3337-8678</Identifier><AffiliationInfo><Affiliation>School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, VIC, 3001, Australia. rchrp@rmit.edu.au.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>01</Month><Day>06</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Bioprocess Biosyst Eng</MedlineTA><NlmUniqueID>101088505</NlmUniqueID><ISSNLinking>1615-7591</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012722">Sewage</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D008956" MajorTopicYN="Y">Models, Chemical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012722" MajorTopicYN="N">Sewage</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Active volume</Keyword><Keyword MajorTopicYN="N">Anaerobic digester</Keyword><Keyword MajorTopicYN="N">Mechanical mixing</Keyword><Keyword MajorTopicYN="N">Sludge simulant</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2015</Year><Month>10</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2015</Year><Month>12</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>1</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>1</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2016</Year><Month>11</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">26739143</ArticleId><ArticleId IdType="doi">10.1007/s00449-015-1530-4</ArticleId><ArticleId IdType="pii">10.1007/s00449-015-1530-4</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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