Endogenous processes during long-term starvation in activated sludge performing enhanced biological phosphorus removal
Identifieur interne : 001575 ( Main/Merge ); précédent : 001574; suivant : 001576Endogenous processes during long-term starvation in activated sludge performing enhanced biological phosphorus removal
Auteurs : C. Lopez [États-Unis] ; Marie-Noëlle Pons [France] ; E. Morgenroth [États-Unis]Source :
- Water research : (Oxford) [ 0043-1354 ] ; 2006.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
Abstract
In many biological wastewater treatment systems, bacterial growth and the amount of active biomass are limited by the availability of substrate. Under these low growth conditions, endogenous processes have a significant influence on the amount of active biomass and therefore, the overall system performance. In enhanced biological phosphorus removal (EBPR) systems endogenous processes can also influence the levels of the internal storage compounds of the polyphosphate accumulating organisms (PAO), directly affecting phosphorus removal performance. The purpose of this study was to evaluate the significance of different endogenous processes that occur during the long-term starvation of EBPR sludge under aerobic and anaerobic conditions. Activated sludge obtained from a laboratory sequencing batch reactor was used to perform a series of batch starvation experiments. Under aerobic starvation conditions we observed a significant decay of PAO (first-order decay rate of 0.15/d) together with a rapid utilization of polyhydroxyalkanoates (PHA) and a slower utilization of glycogen and polyphosphate to generate maintenance energy. On the other hand, anaerobic starvation was best described by maintenance processes that rapidly reduce the levels of polyphosphate and glycogen under starvation conditions while no significant decay of PAO was observed. The endogenous utilization of glycogen for maintenance purposes is currently not included in available EBPR models. Our experimental results suggest that mathematical models for in EBPR should differentiate between aerobic and anaerobic endogenous processes, as they influence active biomass and storage products differently.
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000504
- to stream PascalFrancis, to step Curation: 000607
- to stream PascalFrancis, to step Checkpoint: 000501
Links to Exploration step
Pascal:06-0306140Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Endogenous processes during long-term starvation in activated sludge performing enhanced biological phosphorus removal</title><author><name sortKey="Lopez, C" sort="Lopez, C" uniqKey="Lopez C" first="C." last="Lopez">C. Lopez</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 3219 Newmark Civil Engineering Laboratory, 205 North Mathews Avenue</s1><s2>Urbana, IL 61801</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Illinois</region></placeName></affiliation></author><author><name sortKey="Pons, M N" sort="Pons, M N" uniqKey="Pons M" first="M. N." last="Pons">Marie-Noëlle Pons</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC-INPL, BP 20451</s1><s2>54001, Nancy</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author><author><name sortKey="Morgenroth, E" sort="Morgenroth, E" uniqKey="Morgenroth E" first="E." last="Morgenroth">E. Morgenroth</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 3219 Newmark Civil Engineering Laboratory, 205 North Mathews Avenue</s1><s2>Urbana, IL 61801</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Illinois</region></placeName></affiliation><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Department of Animal Sciences, University of Illinois at Urbana-Champaign. Animal Sciences Laboratory, 1207 West Gregory Drive</s1><s2>Urbana, IL 61801</s2><s3>USA</s3><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Illinois</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">06-0306140</idno><date when="2006">2006</date><idno type="stanalyst">PASCAL 06-0306140 INIST</idno><idno type="RBID">Pascal:06-0306140</idno><idno type="wicri:Area/PascalFrancis/Corpus">000504</idno><idno type="wicri:Area/PascalFrancis/Curation">000607</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000501</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000501</idno><idno type="wicri:doubleKey">0043-1354:2006:Lopez C:endogenous:processes:during</idno><idno type="wicri:Area/Main/Merge">001575</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Endogenous processes during long-term starvation in activated sludge performing enhanced biological phosphorus removal</title><author><name sortKey="Lopez, C" sort="Lopez, C" uniqKey="Lopez C" first="C." last="Lopez">C. Lopez</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 3219 Newmark Civil Engineering Laboratory, 205 North Mathews Avenue</s1><s2>Urbana, IL 61801</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Illinois</region></placeName></affiliation></author><author><name sortKey="Pons, M N" sort="Pons, M N" uniqKey="Pons M" first="M. N." last="Pons">Marie-Noëlle Pons</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC-INPL, BP 20451</s1><s2>54001, Nancy</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author><author><name sortKey="Morgenroth, E" sort="Morgenroth, E" uniqKey="Morgenroth E" first="E." last="Morgenroth">E. Morgenroth</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 3219 Newmark Civil Engineering Laboratory, 205 North Mathews Avenue</s1><s2>Urbana, IL 61801</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Illinois</region></placeName></affiliation><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Department of Animal Sciences, University of Illinois at Urbana-Champaign. Animal Sciences Laboratory, 1207 West Gregory Drive</s1><s2>Urbana, IL 61801</s2><s3>USA</s3><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Illinois</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Water research : (Oxford)</title><title level="j" type="abbreviated">Water res. : (Oxf.)</title><idno type="ISSN">0043-1354</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Water research : (Oxford)</title><title level="j" type="abbreviated">Water res. : (Oxf.)</title><idno type="ISSN">0043-1354</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activated sludge</term><term>Aerobe</term><term>Anaerobe</term><term>Batchwise</term><term>Biological purification</term><term>Biological treatment</term><term>Biomass</term><term>Bioreactor</term><term>Long term</term><term>Mathematical model</term><term>Modeling</term><term>Phosphorus</term><term>Sequencing batch reactor</term><term>Waste treatment</term><term>Waste water purification</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Long terme</term><term>Boue activée</term><term>Phosphore</term><term>Traitement biologique</term><term>Epuration eau usée</term><term>Biomasse</term><term>Aérobie</term><term>Anaérobie</term><term>Réacteur SBR</term><term>En discontinu</term><term>Modélisation</term><term>Modèle mathématique</term><term>Epuration biologique</term><term>Traitement déchet</term><term>Bioréacteur</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Phosphore</term><term>Biomasse</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In many biological wastewater treatment systems, bacterial growth and the amount of active biomass are limited by the availability of substrate. Under these low growth conditions, endogenous processes have a significant influence on the amount of active biomass and therefore, the overall system performance. In enhanced biological phosphorus removal (EBPR) systems endogenous processes can also influence the levels of the internal storage compounds of the polyphosphate accumulating organisms (PAO), directly affecting phosphorus removal performance. The purpose of this study was to evaluate the significance of different endogenous processes that occur during the long-term starvation of EBPR sludge under aerobic and anaerobic conditions. Activated sludge obtained from a laboratory sequencing batch reactor was used to perform a series of batch starvation experiments. Under aerobic starvation conditions we observed a significant decay of PAO (first-order decay rate of 0.15/d) together with a rapid utilization of polyhydroxyalkanoates (PHA) and a slower utilization of glycogen and polyphosphate to generate maintenance energy. On the other hand, anaerobic starvation was best described by maintenance processes that rapidly reduce the levels of polyphosphate and glycogen under starvation conditions while no significant decay of PAO was observed. The endogenous utilization of glycogen for maintenance purposes is currently not included in available EBPR models. Our experimental results suggest that mathematical models for in EBPR should differentiate between aerobic and anaerobic endogenous processes, as they influence active biomass and storage products differently.</div></front></TEI><affiliations><list><country><li>France</li><li>États-Unis</li></country><region><li>Grand Est</li><li>Illinois</li><li>Lorraine (région)</li></region><settlement><li>Nancy</li></settlement><orgName><li>Centre national de la recherche scientifique</li><li>Laboratoire réactions et génie des procédés</li><li>Université de Lorraine</li></orgName></list><tree><country name="États-Unis"><region name="Illinois"><name sortKey="Lopez, C" sort="Lopez, C" uniqKey="Lopez C" first="C." last="Lopez">C. Lopez</name></region><name sortKey="Morgenroth, E" sort="Morgenroth, E" uniqKey="Morgenroth E" first="E." last="Morgenroth">E. Morgenroth</name><name sortKey="Morgenroth, E" sort="Morgenroth, E" uniqKey="Morgenroth E" first="E." last="Morgenroth">E. Morgenroth</name></country><country name="France"><region name="Grand Est"><name sortKey="Pons, M N" sort="Pons, M N" uniqKey="Pons M" first="M. N." last="Pons">Marie-Noëlle Pons</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Lorraine/explor/LrgpV1/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001575 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 001575 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Lorraine
|area= LrgpV1
|flux= Main
|étape= Merge
|type= RBID
|clé= Pascal:06-0306140
|texte= Endogenous processes during long-term starvation in activated sludge performing enhanced biological phosphorus removal
}}
| This area was generated with Dilib version V0.6.32. |  |