Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments

The aim of this study focuses on the possibility of producing biogas from brewery spent grains through an anaerobic digestion (AD) process. Beer, in fact, is one of the most consumed drinks all over the world and its highly impactful production process releases a large quantity of wastes, such as sp...

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Autores principales: Maurizio Carlini, Danilo Monarca, Sonia Castellucci, Andrea Mennuni, Luca Casini, Sara Selli
Formato: article
Lenguaje:EN
Publicado: Elsevier 2021
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Acceso en línea:https://doaj.org/article/594723e905584864bf788dd91623a493
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spelling oai:doaj.org-article:594723e905584864bf788dd91623a4932021-11-18T04:49:22ZBeer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments2352-484710.1016/j.egyr.2021.07.049https://doaj.org/article/594723e905584864bf788dd91623a4932021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S235248472100514Xhttps://doaj.org/toc/2352-4847The aim of this study focuses on the possibility of producing biogas from brewery spent grains through an anaerobic digestion (AD) process. Beer, in fact, is one of the most consumed drinks all over the world and its highly impactful production process releases a large quantity of wastes, such as spent grains (BSG). In the first part of this work, an energetic characterization of raw BSG has been carried out to define moisture, ashes and volatile solids contents. Then, two pre-treatments of BSG have been analysed, in order to establish how to improve the energetic characteristics of this biomass for an anaerobic conversion process. The first pre-treatment has consisted in a low temperature process, while the second one is an alkali pre-treatment. After the raw biomass has been subjected to each pre-treatment, the energetic characterization has been repeated to evaluate the change of the BSG’s properties. The obtained results show that the raw BSG is a suitable biomass for AD application, because of the high content of volatile solids (around 90.9%) and the low percentage of ash on dry basis (about 3.53%). These characteristics has been bettered through the low temperature pre-treatment (volatile solids percentage near 92.7% and ash content approximately equal to 3.59 %) in terms of digestibility by anaerobic digestion reaction, while the alkali one has worsened the volatile solids content (around 73.8%) and increased the ash percentage (near 38.61%).Maurizio CarliniDanilo MonarcaSonia CastellucciAndrea MennuniLuca CasiniSara SelliElsevierarticleCircular economyRevaluation of wastesAnaerobic digestionBiomass characterizationBrewery spent grainsElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENEnergy Reports, Vol 7, Iss , Pp 921-929 (2021)
institution DOAJ
collection DOAJ
language EN
topic Circular economy
Revaluation of wastes
Anaerobic digestion
Biomass characterization
Brewery spent grains
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
spellingShingle Circular economy
Revaluation of wastes
Anaerobic digestion
Biomass characterization
Brewery spent grains
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Maurizio Carlini
Danilo Monarca
Sonia Castellucci
Andrea Mennuni
Luca Casini
Sara Selli
Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments
description The aim of this study focuses on the possibility of producing biogas from brewery spent grains through an anaerobic digestion (AD) process. Beer, in fact, is one of the most consumed drinks all over the world and its highly impactful production process releases a large quantity of wastes, such as spent grains (BSG). In the first part of this work, an energetic characterization of raw BSG has been carried out to define moisture, ashes and volatile solids contents. Then, two pre-treatments of BSG have been analysed, in order to establish how to improve the energetic characteristics of this biomass for an anaerobic conversion process. The first pre-treatment has consisted in a low temperature process, while the second one is an alkali pre-treatment. After the raw biomass has been subjected to each pre-treatment, the energetic characterization has been repeated to evaluate the change of the BSG’s properties. The obtained results show that the raw BSG is a suitable biomass for AD application, because of the high content of volatile solids (around 90.9%) and the low percentage of ash on dry basis (about 3.53%). These characteristics has been bettered through the low temperature pre-treatment (volatile solids percentage near 92.7% and ash content approximately equal to 3.59 %) in terms of digestibility by anaerobic digestion reaction, while the alkali one has worsened the volatile solids content (around 73.8%) and increased the ash percentage (near 38.61%).
format article
author Maurizio Carlini
Danilo Monarca
Sonia Castellucci
Andrea Mennuni
Luca Casini
Sara Selli
author_facet Maurizio Carlini
Danilo Monarca
Sonia Castellucci
Andrea Mennuni
Luca Casini
Sara Selli
author_sort Maurizio Carlini
title Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments
title_short Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments
title_full Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments
title_fullStr Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments
title_full_unstemmed Beer spent grains biomass for biogas production: Characterization and anaerobic digestion-oriented pre-treatments
title_sort beer spent grains biomass for biogas production: characterization and anaerobic digestion-oriented pre-treatments
publisher Elsevier
publishDate 2021
url https://doaj.org/article/594723e905584864bf788dd91623a493
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AT soniacastellucci beerspentgrainsbiomassforbiogasproductioncharacterizationandanaerobicdigestionorientedpretreatments
AT andreamennuni beerspentgrainsbiomassforbiogasproductioncharacterizationandanaerobicdigestionorientedpretreatments
AT lucacasini beerspentgrainsbiomassforbiogasproductioncharacterizationandanaerobicdigestionorientedpretreatments
AT saraselli beerspentgrainsbiomassforbiogasproductioncharacterizationandanaerobicdigestionorientedpretreatments
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