Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production

This study investigated acid splitting wastewater (ASW) and interphase (IF) from soapstock splitting, as well as matter organic non glycerol (MONG) from glycerol processing, as potential substrates for biogas production. Batch and semicontinuous thermophilic anaerobic digestion experiments were cond...

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Autores principales:	Sebastian Borowski, Weronika Cieciura-Włoch
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	anaerobic digestion biogas soapstock acid splitting wastewater MONG Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/e649ce2809d24f0caca965924ee5ff86
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spelling	oai:doaj.org-article:e649ce2809d24f0caca965924ee5ff862021-11-25T18:27:15ZEnzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production10.3390/molecules262267821420-3049https://doaj.org/article/e649ce2809d24f0caca965924ee5ff862021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/22/6782https://doaj.org/toc/1420-3049This study investigated acid splitting wastewater (ASW) and interphase (IF) from soapstock splitting, as well as matter organic non glycerol (MONG) from glycerol processing, as potential substrates for biogas production. Batch and semicontinuous thermophilic anaerobic digestion experiments were conducted, and the substrates were preliminary treated using commercial enzymes kindly delivered by Novozymes A/C. The greatest enhancement in the batch digestion efficiency was achieved when three preparations; EversaTransform, NovoShape, and Lecitase were applied in the hydrolysis stage, which resulted in the maximum methane yields of 937 NL/kg VS and 915 NL/kg VS obtained from IF and MONG, respectively. The co-digestion of 68% ASW, 16% IF, and 16% MONG (wet weight basis) performed at an organic loading rate (OLR) of 1.5 kg VS/m<sup>3</sup>/day provided an average methane yield of 515 NLCH<sub>4</sub>/kg VS<sub>added</sub> and a volatile solid reduction of nearly 95%. A relatively high concentration of sulfates in the feed did not significantly affect the digestion performance but resulted in an increased hydrogen sulfide concentration in the biogas with the peak of 4000 ppm.Sebastian BorowskiWeronika Cieciura-WłochMDPI AGarticleanaerobic digestionbiogassoapstockacid splitting wastewaterMONGOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6782, p 6782 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anaerobic digestion biogas soapstock acid splitting wastewater MONG Organic chemistry QD241-441
spellingShingle	anaerobic digestion biogas soapstock acid splitting wastewater MONG Organic chemistry QD241-441 Sebastian Borowski Weronika Cieciura-Włoch Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production
description	This study investigated acid splitting wastewater (ASW) and interphase (IF) from soapstock splitting, as well as matter organic non glycerol (MONG) from glycerol processing, as potential substrates for biogas production. Batch and semicontinuous thermophilic anaerobic digestion experiments were conducted, and the substrates were preliminary treated using commercial enzymes kindly delivered by Novozymes A/C. The greatest enhancement in the batch digestion efficiency was achieved when three preparations; EversaTransform, NovoShape, and Lecitase were applied in the hydrolysis stage, which resulted in the maximum methane yields of 937 NL/kg VS and 915 NL/kg VS obtained from IF and MONG, respectively. The co-digestion of 68% ASW, 16% IF, and 16% MONG (wet weight basis) performed at an organic loading rate (OLR) of 1.5 kg VS/m<sup>3</sup>/day provided an average methane yield of 515 NLCH<sub>4</sub>/kg VS<sub>added</sub> and a volatile solid reduction of nearly 95%. A relatively high concentration of sulfates in the feed did not significantly affect the digestion performance but resulted in an increased hydrogen sulfide concentration in the biogas with the peak of 4000 ppm.
format	article
author	Sebastian Borowski Weronika Cieciura-Włoch
author_facet	Sebastian Borowski Weronika Cieciura-Włoch
author_sort	Sebastian Borowski
title	Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production
title_short	Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production
title_full	Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production
title_fullStr	Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production
title_full_unstemmed	Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production
title_sort	enzymatic pretreatment of byproducts from soapstock splitting and glycerol processing for improvement of biogas production
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e649ce2809d24f0caca965924ee5ff86
work_keys_str_mv	AT sebastianborowski enzymaticpretreatmentofbyproductsfromsoapstocksplittingandglycerolprocessingforimprovementofbiogasproduction AT weronikacieciurawłoch enzymaticpretreatmentofbyproductsfromsoapstocksplittingandglycerolprocessingforimprovementofbiogasproduction
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Enzymatic Pretreatment of Byproducts from Soapstock Splitting and Glycerol Processing for Improvement of Biogas Production

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