Biofilm formation for organic matter and sulphate removal in gas-lift reactors

A start-up strategy was presented and evaluated to obtain a well-established biofilm in a gas lift-reactor capable both for the removal of organic matter and sulphate. Pumice stone was used as material support. The influence of shear forces, given by the biogas recirculation, the effect of the COD/S...

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Autores principales:	Pizarro,Carolina, Donoso-Bravo,Andrés, Jeison,David, Ruiz-Filippi,Gonzalo, Chamy,Rolando
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2011
Materias:	anaerobic biofilm gas-lift reactors sulphate start-up
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400003
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spelling	oai:scielo:S0717-345820110004000032012-04-17Biofilm formation for organic matter and sulphate removal in gas-lift reactorsPizarro,CarolinaDonoso-Bravo,AndrésJeison,DavidRuiz-Filippi,GonzaloChamy,Rolando anaerobic biofilm gas-lift reactors sulphate start-up A start-up strategy was presented and evaluated to obtain a well-established biofilm in a gas lift-reactor capable both for the removal of organic matter and sulphate. Pumice stone was used as material support. The influence of shear forces, given by the biogas recirculation, the effect of the COD/SO4-2 ratio and the OLRs increase were evaluated on the reactor performance. From the first stages, cell colonization was observed along with the presence of extracellular polymeric substances. The COD and sulphate removal was over 70%, for all conditions. The increase of gas flow did not have an adverse effect on biofilm development even though there was some detachment. Specific methanogenic activity of the biofilm increased along the experiments. Operational parameters as alkalinity and alkalinity ratio were within the recommended values for the operation with sulphate-rich wastewater. For gas-lift reactors operation it becomes fundamental to have a suitable start-up strategy that takes into account the initial biofilm development from a non-acclimatized biomass.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.14 n.4 20112011-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400003en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	anaerobic biofilm gas-lift reactors sulphate start-up
spellingShingle	anaerobic biofilm gas-lift reactors sulphate start-up Pizarro,Carolina Donoso-Bravo,Andrés Jeison,David Ruiz-Filippi,Gonzalo Chamy,Rolando Biofilm formation for organic matter and sulphate removal in gas-lift reactors
description	A start-up strategy was presented and evaluated to obtain a well-established biofilm in a gas lift-reactor capable both for the removal of organic matter and sulphate. Pumice stone was used as material support. The influence of shear forces, given by the biogas recirculation, the effect of the COD/SO4-2 ratio and the OLRs increase were evaluated on the reactor performance. From the first stages, cell colonization was observed along with the presence of extracellular polymeric substances. The COD and sulphate removal was over 70%, for all conditions. The increase of gas flow did not have an adverse effect on biofilm development even though there was some detachment. Specific methanogenic activity of the biofilm increased along the experiments. Operational parameters as alkalinity and alkalinity ratio were within the recommended values for the operation with sulphate-rich wastewater. For gas-lift reactors operation it becomes fundamental to have a suitable start-up strategy that takes into account the initial biofilm development from a non-acclimatized biomass.
author	Pizarro,Carolina Donoso-Bravo,Andrés Jeison,David Ruiz-Filippi,Gonzalo Chamy,Rolando
author_facet	Pizarro,Carolina Donoso-Bravo,Andrés Jeison,David Ruiz-Filippi,Gonzalo Chamy,Rolando
author_sort	Pizarro,Carolina
title	Biofilm formation for organic matter and sulphate removal in gas-lift reactors
title_short	Biofilm formation for organic matter and sulphate removal in gas-lift reactors
title_full	Biofilm formation for organic matter and sulphate removal in gas-lift reactors
title_fullStr	Biofilm formation for organic matter and sulphate removal in gas-lift reactors
title_full_unstemmed	Biofilm formation for organic matter and sulphate removal in gas-lift reactors
title_sort	biofilm formation for organic matter and sulphate removal in gas-lift reactors
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400003
work_keys_str_mv	AT pizarrocarolina biofilmformationfororganicmatterandsulphateremovalingasliftreactors AT donosobravoandres biofilmformationfororganicmatterandsulphateremovalingasliftreactors AT jeisondavid biofilmformationfororganicmatterandsulphateremovalingasliftreactors AT ruizfilippigonzalo biofilmformationfororganicmatterandsulphateremovalingasliftreactors AT chamyrolando biofilmformationfororganicmatterandsulphateremovalingasliftreactors
_version_	1718441839950823424

Biofilm formation for organic matter and sulphate removal in gas-lift reactors

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