Rheological characterisation of thermally-treated anaerobic digested sludge: impact of temperature and thermal history.
Identifieur interne : 003748 ( PubMed/Corpus ); précédent : 003747; suivant : 003749Rheological characterisation of thermally-treated anaerobic digested sludge: impact of temperature and thermal history.
Auteurs : Ehsan Farno ; Jean Christophe Baudez ; Rajarathinam Parthasarathy ; Nicky EshtiaghiSource :
- Water research [ 1879-2448 ] ; 2014.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Sewage.
- methods : Waste Disposal, Fluid.
- Anaerobiosis, Hot Temperature, Rheology, Time Factors, Viscosity.
Abstract
This study investigated the partially irreversible effect of thermal treatment on the rheology of digested sludge when it was subjected to temperature change between 20 °C and 80 °C and then cooled down to 20 °C. The yield stress, infinite viscosity and liquor viscosity of sludge were measured at 20 °C for different thermal histories and were compared to the evolution of the solubilised chemical oxygen demand (COD) of sludge liquor. The results showed that thermal history irreversibly affects sludge rheology as the yield stress of sludge which was heated to 80 °C then cooled down to 20 °C was 68% lower than the initial yield stress at 20 °C. This decrease was due to the irreversible solubilisation of solid matter during heating as underlined by soluble COD data which did not reach its original level after thermal treatment. Measured soluble COD of sludge which was heated and cooled down was much higher than the soluble COD of initial sludge. We found a proportionality of the increase of soluble COD with the decrease of the yield stress as well as increase of infinite viscosity.
DOI: 10.1016/j.watres.2014.02.048
PubMed: 24675271
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pubmed:24675271Le document en format XML
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Department, RMIT University, Victoria 3001, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Baudez, Jean Christophe" sort="Baudez, Jean Christophe" uniqKey="Baudez J" first="Jean Christophe" last="Baudez">Jean Christophe Baudez</name><affiliation><nlm:affiliation>Irstea, UR TSCF, Domaine des Palaquins, F-03150 Montoldre, France.</nlm:affiliation></affiliation></author><author><name sortKey="Parthasarathy, Rajarathinam" sort="Parthasarathy, Rajarathinam" uniqKey="Parthasarathy R" first="Rajarathinam" last="Parthasarathy">Rajarathinam Parthasarathy</name><affiliation><nlm:affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Eshtiaghi, Nicky" sort="Eshtiaghi, Nicky" uniqKey="Eshtiaghi N" first="Nicky" last="Eshtiaghi">Nicky Eshtiaghi</name><affiliation><nlm:affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia. 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Department, RMIT University, Victoria 3001, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Baudez, Jean Christophe" sort="Baudez, Jean Christophe" uniqKey="Baudez J" first="Jean Christophe" last="Baudez">Jean Christophe Baudez</name><affiliation><nlm:affiliation>Irstea, UR TSCF, Domaine des Palaquins, F-03150 Montoldre, France.</nlm:affiliation></affiliation></author><author><name sortKey="Parthasarathy, Rajarathinam" sort="Parthasarathy, Rajarathinam" uniqKey="Parthasarathy R" first="Rajarathinam" last="Parthasarathy">Rajarathinam Parthasarathy</name><affiliation><nlm:affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Eshtiaghi, Nicky" sort="Eshtiaghi, Nicky" uniqKey="Eshtiaghi N" first="Nicky" last="Eshtiaghi">Nicky Eshtiaghi</name><affiliation><nlm:affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia. Electronic address: nicky.eshtiaghi@rmit.edu.au.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Water research</title><idno type="eISSN">1879-2448</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anaerobiosis</term><term>Hot Temperature</term><term>Rheology</term><term>Sewage (chemistry)</term><term>Time Factors</term><term>Viscosity</term><term>Waste Disposal, Fluid (methods)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Sewage</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Waste Disposal, Fluid</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Anaerobiosis</term><term>Hot Temperature</term><term>Rheology</term><term>Time Factors</term><term>Viscosity</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study investigated the partially irreversible effect of thermal treatment on the rheology of digested sludge when it was subjected to temperature change between 20 °C and 80 °C and then cooled down to 20 °C. The yield stress, infinite viscosity and liquor viscosity of sludge were measured at 20 °C for different thermal histories and were compared to the evolution of the solubilised chemical oxygen demand (COD) of sludge liquor. The results showed that thermal history irreversibly affects sludge rheology as the yield stress of sludge which was heated to 80 °C then cooled down to 20 °C was 68% lower than the initial yield stress at 20 °C. This decrease was due to the irreversible solubilisation of solid matter during heating as underlined by soluble COD data which did not reach its original level after thermal treatment. Measured soluble COD of sludge which was heated and cooled down was much higher than the soluble COD of initial sludge. We found a proportionality of the increase of soluble COD with the decrease of the yield stress as well as increase of infinite viscosity.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24675271</PMID><DateCreated><Year>2014</Year><Month>04</Month><Day>28</Day></DateCreated><DateCompleted><Year>2015</Year><Month>01</Month><Day>12</Day></DateCompleted><DateRevised><Year>2014</Year><Month>04</Month><Day>28</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-2448</ISSN><JournalIssue CitedMedium="Internet"><Volume>56</Volume><PubDate><Year>2014</Year><Month>Jun</Month><Day>01</Day></PubDate></JournalIssue><Title>Water research</Title><ISOAbbreviation>Water Res.</ISOAbbreviation></Journal><ArticleTitle>Rheological characterisation of thermally-treated anaerobic digested sludge: impact of temperature and thermal history.</ArticleTitle><Pagination><MedlinePgn>156-61</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.watres.2014.02.048</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0043-1354(14)00176-6</ELocationID><Abstract><AbstractText>This study investigated the partially irreversible effect of thermal treatment on the rheology of digested sludge when it was subjected to temperature change between 20 °C and 80 °C and then cooled down to 20 °C. The yield stress, infinite viscosity and liquor viscosity of sludge were measured at 20 °C for different thermal histories and were compared to the evolution of the solubilised chemical oxygen demand (COD) of sludge liquor. The results showed that thermal history irreversibly affects sludge rheology as the yield stress of sludge which was heated to 80 °C then cooled down to 20 °C was 68% lower than the initial yield stress at 20 °C. This decrease was due to the irreversible solubilisation of solid matter during heating as underlined by soluble COD data which did not reach its original level after thermal treatment. Measured soluble COD of sludge which was heated and cooled down was much higher than the soluble COD of initial sludge. We found a proportionality of the increase of soluble COD with the decrease of the yield stress as well as increase of infinite viscosity.</AbstractText><CopyrightInformation>Copyright © 2014 Elsevier Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Farno</LastName><ForeName>Ehsan</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Baudez</LastName><ForeName>Jean Christophe</ForeName><Initials>JC</Initials><AffiliationInfo><Affiliation>Irstea, UR TSCF, Domaine des Palaquins, F-03150 Montoldre, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Parthasarathy</LastName><ForeName>Rajarathinam</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Eshtiaghi</LastName><ForeName>Nicky</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Rheology and Material Processing Lab. (RMPC), Civil Environmental and Chemical Eng. Department, RMIT University, Victoria 3001, Australia. Electronic address: nicky.eshtiaghi@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>2014</Year><Month>03</Month><Day>11</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Water Res</MedlineTA><NlmUniqueID>0105072</NlmUniqueID><ISSNLinking>0043-1354</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012722">Sewage</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000693" MajorTopicYN="N">Anaerobiosis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006358" MajorTopicYN="Y">Hot Temperature</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012212" MajorTopicYN="Y">Rheology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012722" MajorTopicYN="N">Sewage</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013997" MajorTopicYN="N">Time Factors</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014783" MajorTopicYN="N">Viscosity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014865" MajorTopicYN="N">Waste Disposal, Fluid</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Composition change</Keyword><Keyword MajorTopicYN="N">Digested sludge rheology</Keyword><Keyword MajorTopicYN="N">Infinite viscosity</Keyword><Keyword MajorTopicYN="N">Soluble COD</Keyword><Keyword MajorTopicYN="N">Yield stress</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2014</Year><Month>01</Month><Day>22</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2014</Year><Month>02</Month><Day>24</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>02</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>3</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>3</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>1</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24675271</ArticleId><ArticleId IdType="pii">S0043-1354(14)00176-6</ArticleId><ArticleId IdType="doi">10.1016/j.watres.2014.02.048</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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