PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste

Màster d'Enginyeria Ambiental, Facultat de Química, Universitat de Barcelona, Curs: 2015-2016, Tutors: Joan Mata Álvarez, Ana Martin-Ryals

Detalles Bibliográficos
Autor: Aymà Maldonado, Patricia
Tipo de recurso: tesis de maestría
Fecha de publicación:2016
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/125374
Acceso en línea:https://hdl.handle.net/2445/125374
Access Level:acceso abierto
Palabra clave:Biopolímers
Residus orgànics
Biomassa
Treballs de fi de màster
Biopolymers
Organic wastes
Biomass
Master's theses
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spelling PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid wasteAymà Maldonado, PatriciaBiopolímersResidus orgànicsBiomassaTreballs de fi de màsterBiopolymersOrganic wastesBiomassMaster's thesesMàster d'Enginyeria Ambiental, Facultat de Química, Universitat de Barcelona, Curs: 2015-2016, Tutors: Joan Mata Álvarez, Ana Martin-RyalsDue to their biodegradability, biocompatibility, chemical-diversity, and being manufactured from renewable carbon resources, PHAs are considered one of the most promising biopolymers to serve as an alternative to synthetic thermoplastics. In this study is carried out the selection and accumulation of PHA accumulating biomass in two different reactors: a SBR, for selecting bacteria applying a selective pressure based on a carbon excess (feast) and limitation (famine), and an accumulation reactor, operated in batch, for maximizing PHA production. FL-OFMSW was the source of carbon and nutrients which enabled the integrated valorization of waste streams into valuable products. This substrate is composed by a mixture of VFA and N-NH4+ (8 – 9 g VFA/L and 2 – 4 g N-NH4+/L) and solid fraction. Sludge was collected from a secondary activated sludge system from a local wastewater treatment facility. The objectives for this work were to select PHA accumulating bacteria, to maximize PHA production, to promote nutrient removal from the effluent while PHA production was happening and to study FL-OFMSW affection into PHA accumulation. The F/f ratio obtained during experimentation was around 0.19 - 0.27 which ensure PHA accumulating bacteria selection. Influent characterization (VFA concentration) is essential for maintaining an optimal ratio for PHA accumulating bacteria selection. Maximum PHA accumulated per gram of TSS was 7.9% in the selection reactor and 37% in the accumulation reactor. Both results were obtained with synthetic mixture of acetic acid which suggested a possible affectation of the FL-OFMSW for PHA accumulation. Among the different possible limiting factors, ammonium concentrations seemed to be the most probable cause. Nutrient removal in the SBR reactor was possible controlling pH during the operation. Basic pH values (over 8.3) could promote high free ammonia concentrations in the rector which inhibits, directly, nitrifying activity. FL-OFMSW can be used as substrate for the process, nevertheless, due to its nutrient concentration, PHA accumulation and nutrient removal could be limited. For this reason, nutrient removal must be considered for increasing the overall yield of the process.Mata Álvarez, JoanMartin-Ryals, Ana2016info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2445/125374Màster Oficial - Enginyeria Ambientalreponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaIngléscc-by-nc-nd (c) Aymà, 2016http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1253742026-05-27T06:46:51Z
dc.title.none.fl_str_mv PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
title PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
spellingShingle PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
Aymà Maldonado, Patricia
Biopolímers
Residus orgànics
Biomassa
Treballs de fi de màster
Biopolymers
Organic wastes
Biomass
Master's theses
title_short PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
title_full PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
title_fullStr PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
title_full_unstemmed PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
title_sort PHA accumulating bacteria selection in a SBR treating fermentation liquids of organic fraction of municipal solid waste
dc.creator.none.fl_str_mv Aymà Maldonado, Patricia
author Aymà Maldonado, Patricia
author_facet Aymà Maldonado, Patricia
author_role author
dc.contributor.none.fl_str_mv Mata Álvarez, Joan
Martin-Ryals, Ana
dc.subject.none.fl_str_mv Biopolímers
Residus orgànics
Biomassa
Treballs de fi de màster
Biopolymers
Organic wastes
Biomass
Master's theses
topic Biopolímers
Residus orgànics
Biomassa
Treballs de fi de màster
Biopolymers
Organic wastes
Biomass
Master's theses
description Màster d'Enginyeria Ambiental, Facultat de Química, Universitat de Barcelona, Curs: 2015-2016, Tutors: Joan Mata Álvarez, Ana Martin-Ryals
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/125374
url https://hdl.handle.net/2445/125374
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Aymà, 2016
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Aymà, 2016
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Màster Oficial - Enginyeria Ambiental
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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