Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source

The aim of this research was to assess the simultaneous effect of zeolite and bischofite on estruvite production in an anaerobic digester treating pig slurry as substrate. Three ratios (5:1, 6:1 and 7:1) of Mg-P were used for evaluating the effect of only bischofite on anaerobic digestion. For asses...

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Autores principales:	N. Palominos, A. Castillo, L. Guerrero, R. Borja, C. Huiliñir
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	anaerobic digestion struvite zeolite bischofite pig slurry Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/a69cdbf0686a4eb9ae664e06e3fb3a19
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spelling	oai:doaj.org-article:a69cdbf0686a4eb9ae664e06e3fb3a192021-12-02T11:23:41ZCoupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source2296-665X10.3389/fenvs.2021.706730https://doaj.org/article/a69cdbf0686a4eb9ae664e06e3fb3a192021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenvs.2021.706730/fullhttps://doaj.org/toc/2296-665XThe aim of this research was to assess the simultaneous effect of zeolite and bischofite on estruvite production in an anaerobic digester treating pig slurry as substrate. Three ratios (5:1, 6:1 and 7:1) of Mg-P were used for evaluating the effect of only bischofite on anaerobic digestion. For assessing the simultaneous effect of zeolite and bischofite on anaerobic digestion, three mass ratios of zeolite:bischofite (1, 5 and 10%) were used. As results, bischofite as Mg+2 source served to decrease the total phosphorous (TP) concentration in the anaerobic digestion of pig manure without affecting the maximum methane production rate or methane yield of the system. An average 82.5% TP removal was found in the reactors with bischofite during the first 5 days of digestion. Nevertheless, bischofite increased the lag-phase of the system. The simultaneous presence of zeolite and bischofite (1% ratio with respect to bischofite) caused a TP removal of 65.6% and increased the methane yield by up to 19.9% compared to a system without zeolite or bischofite. Thus, it is feasible to use bischofite and zeolite as enhancers for the simultaneous production of biogas and struvite inside an anaerobic digester treating piggery wastewater.N. PalominosA. CastilloL. GuerreroR. BorjaC. HuiliñirFrontiers Media S.A.articleanaerobic digestionstruvitezeolitebischofitepig slurryEnvironmental sciencesGE1-350ENFrontiers in Environmental Science, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anaerobic digestion struvite zeolite bischofite pig slurry Environmental sciences GE1-350
spellingShingle	anaerobic digestion struvite zeolite bischofite pig slurry Environmental sciences GE1-350 N. Palominos A. Castillo L. Guerrero R. Borja C. Huiliñir Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source
description	The aim of this research was to assess the simultaneous effect of zeolite and bischofite on estruvite production in an anaerobic digester treating pig slurry as substrate. Three ratios (5:1, 6:1 and 7:1) of Mg-P were used for evaluating the effect of only bischofite on anaerobic digestion. For assessing the simultaneous effect of zeolite and bischofite on anaerobic digestion, three mass ratios of zeolite:bischofite (1, 5 and 10%) were used. As results, bischofite as Mg+2 source served to decrease the total phosphorous (TP) concentration in the anaerobic digestion of pig manure without affecting the maximum methane production rate or methane yield of the system. An average 82.5% TP removal was found in the reactors with bischofite during the first 5 days of digestion. Nevertheless, bischofite increased the lag-phase of the system. The simultaneous presence of zeolite and bischofite (1% ratio with respect to bischofite) caused a TP removal of 65.6% and increased the methane yield by up to 19.9% compared to a system without zeolite or bischofite. Thus, it is feasible to use bischofite and zeolite as enhancers for the simultaneous production of biogas and struvite inside an anaerobic digester treating piggery wastewater.
format	article
author	N. Palominos A. Castillo L. Guerrero R. Borja C. Huiliñir
author_facet	N. Palominos A. Castillo L. Guerrero R. Borja C. Huiliñir
author_sort	N. Palominos
title	Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source
title_short	Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source
title_full	Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source
title_fullStr	Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source
title_full_unstemmed	Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source
title_sort	coupling of anaerobic digestion and struvite precipitation in the same reactor: effect of zeolite and bischofite as mg2+ source
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/a69cdbf0686a4eb9ae664e06e3fb3a19
work_keys_str_mv	AT npalominos couplingofanaerobicdigestionandstruviteprecipitationinthesamereactoreffectofzeoliteandbischofiteasmg2source AT acastillo couplingofanaerobicdigestionandstruviteprecipitationinthesamereactoreffectofzeoliteandbischofiteasmg2source AT lguerrero couplingofanaerobicdigestionandstruviteprecipitationinthesamereactoreffectofzeoliteandbischofiteasmg2source AT rborja couplingofanaerobicdigestionandstruviteprecipitationinthesamereactoreffectofzeoliteandbischofiteasmg2source AT chuilinir couplingofanaerobicdigestionandstruviteprecipitationinthesamereactoreffectofzeoliteandbischofiteasmg2source
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Coupling of Anaerobic Digestion and Struvite Precipitation in the Same Reactor: Effect of Zeolite and Bischofite as Mg2+ Source

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