Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300003 |
Resumo: | Most works reported in the literature focus on thermal treatment of waste activated sludge at temperatures in the range of 160 to 180ºC. This research aimed at evaluating the thermal treatment of excess anaerobic sludge at much lower temperatures, using biogas generated in the wastewater treatment process as the energy source for heating a simplified thermal reactor. Direct burning of the biogas allowed an increase in the sludge temperature up to values close to 75ºC, for a 7-hour heating period. Sludge samples taken at different heating times showed that the thermal disintegration of the organic fraction allowed increases in the concentration of protein, carbohydrate, lipid and COD parameters by 30 to 35 times, as well as a 50% increase in the biogas production. Moreover, the simplified thermal treatment system proved to be an effective alternative for recovering energy from biogas and for controlling methane emissions to the atmosphere. |
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Brazilian Journal of Chemical Engineering |
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|
spelling |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fractionAnaerobic sludgeBioavailabilityBiodegradabilityBiogasThermal treatmentUASB reactorMost works reported in the literature focus on thermal treatment of waste activated sludge at temperatures in the range of 160 to 180ºC. This research aimed at evaluating the thermal treatment of excess anaerobic sludge at much lower temperatures, using biogas generated in the wastewater treatment process as the energy source for heating a simplified thermal reactor. Direct burning of the biogas allowed an increase in the sludge temperature up to values close to 75ºC, for a 7-hour heating period. Sludge samples taken at different heating times showed that the thermal disintegration of the organic fraction allowed increases in the concentration of protein, carbohydrate, lipid and COD parameters by 30 to 35 times, as well as a 50% increase in the biogas production. Moreover, the simplified thermal treatment system proved to be an effective alternative for recovering energy from biogas and for controlling methane emissions to the atmosphere.Brazilian Society of Chemical Engineering2009-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300003Brazilian Journal of Chemical Engineering v.26 n.3 2009reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322009000300003info:eu-repo/semantics/openAccessBorges,E. S. M.Chernicharo,C. A. L.eng2009-09-04T00:00:00Zoai:scielo:S0104-66322009000300003Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2009-09-04T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
title |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
spellingShingle |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction Borges,E. S. M. Anaerobic sludge Bioavailability Biodegradability Biogas Thermal treatment UASB reactor |
title_short |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
title_full |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
title_fullStr |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
title_full_unstemmed |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
title_sort |
Effect of thermal treatment of anaerobic sludge on the bioavailability and biodegradability characteristics of the organic fraction |
author |
Borges,E. S. M. |
author_facet |
Borges,E. S. M. Chernicharo,C. A. L. |
author_role |
author |
author2 |
Chernicharo,C. A. L. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Borges,E. S. M. Chernicharo,C. A. L. |
dc.subject.por.fl_str_mv |
Anaerobic sludge Bioavailability Biodegradability Biogas Thermal treatment UASB reactor |
topic |
Anaerobic sludge Bioavailability Biodegradability Biogas Thermal treatment UASB reactor |
description |
Most works reported in the literature focus on thermal treatment of waste activated sludge at temperatures in the range of 160 to 180ºC. This research aimed at evaluating the thermal treatment of excess anaerobic sludge at much lower temperatures, using biogas generated in the wastewater treatment process as the energy source for heating a simplified thermal reactor. Direct burning of the biogas allowed an increase in the sludge temperature up to values close to 75ºC, for a 7-hour heating period. Sludge samples taken at different heating times showed that the thermal disintegration of the organic fraction allowed increases in the concentration of protein, carbohydrate, lipid and COD parameters by 30 to 35 times, as well as a 50% increase in the biogas production. Moreover, the simplified thermal treatment system proved to be an effective alternative for recovering energy from biogas and for controlling methane emissions to the atmosphere. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322009000300003 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.26 n.3 2009 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213173035008000 |