Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates

Granular sludge bed (GSB) anaerobic digestion (AD) is a well-established method for efficient wastewater treatment, limited, however, by the wastewater particle content. This review is carried out to investigate how and to what extent feed particles influence GSB to evaluate the applicability of GSB...

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Main Authors:	Fasil Ayelegn Tassew, Wenche Hennie Bergland, Carlos Dinamarca, Roald Kommedal, Rune Bakke
Format:	Article
Language:	English
Published:	MDPI AG 2019-07-01
Series:	Energies
Subjects:	high-rate anaerobic digestion granular sludge disintegration hydrolysis suspended solids particulates
Online Access:	https://www.mdpi.com/1996-1073/12/15/2940

id	doaj-2b1b0bee8e4f448581b8f5719cc7fd10
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spelling	doaj-2b1b0bee8e4f448581b8f5719cc7fd102020-11-25T01:57:18ZengMDPI AGEnergies1996-10732019-07-011215294010.3390/en12152940en12152940Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich SubstratesFasil Ayelegn Tassew0Wenche Hennie Bergland1Carlos Dinamarca2Roald Kommedal3Rune Bakke4Department of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes ring 56, 3918 Porsgrunn, NorwayDepartment of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes ring 56, 3918 Porsgrunn, NorwayDepartment of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes ring 56, 3918 Porsgrunn, NorwayInstitute of Chemistry, Biosciences and Environmental Engineering Stavanger, University of Stavanger, 4021 Stavanger, NorwayDepartment of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes ring 56, 3918 Porsgrunn, NorwayGranular sludge bed (GSB) anaerobic digestion (AD) is a well-established method for efficient wastewater treatment, limited, however, by the wastewater particle content. This review is carried out to investigate how and to what extent feed particles influence GSB to evaluate the applicability of GSB to various types of slurries that are abundantly available. Sludge bed microorganisms evidently have mechanisms to retain feed particles for digestion. Disintegration and hydrolysis of such particulates are often the rate-limiting steps in AD. GSB running on particle-rich substrates and factors that affect these processes are stdied especially. Disintegration and hydrolysis models are therefore reviewed. How particles may influence other key processes within GSB is also discussed. Based on this, limitations and strategies for effective digestion of particle-rich substrates in high-rate AD reactors are evaluated.https://www.mdpi.com/1996-1073/12/15/2940high-rate anaerobic digestiongranular sludgedisintegrationhydrolysissuspended solidsparticulates
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Fasil Ayelegn Tassew Wenche Hennie Bergland Carlos Dinamarca Roald Kommedal Rune Bakke
spellingShingle	Fasil Ayelegn Tassew Wenche Hennie Bergland Carlos Dinamarca Roald Kommedal Rune Bakke Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates Energies high-rate anaerobic digestion granular sludge disintegration hydrolysis suspended solids particulates
author_facet	Fasil Ayelegn Tassew Wenche Hennie Bergland Carlos Dinamarca Roald Kommedal Rune Bakke
author_sort	Fasil Ayelegn Tassew
title	Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates
title_short	Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates
title_full	Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates
title_fullStr	Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates
title_full_unstemmed	Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates
title_sort	granular sludge bed processes in anaerobic digestion of particle-rich substrates
publisher	MDPI AG
series	Energies
issn	1996-1073
publishDate	2019-07-01
description	Granular sludge bed (GSB) anaerobic digestion (AD) is a well-established method for efficient wastewater treatment, limited, however, by the wastewater particle content. This review is carried out to investigate how and to what extent feed particles influence GSB to evaluate the applicability of GSB to various types of slurries that are abundantly available. Sludge bed microorganisms evidently have mechanisms to retain feed particles for digestion. Disintegration and hydrolysis of such particulates are often the rate-limiting steps in AD. GSB running on particle-rich substrates and factors that affect these processes are stdied especially. Disintegration and hydrolysis models are therefore reviewed. How particles may influence other key processes within GSB is also discussed. Based on this, limitations and strategies for effective digestion of particle-rich substrates in high-rate AD reactors are evaluated.
topic	high-rate anaerobic digestion granular sludge disintegration hydrolysis suspended solids particulates
url	https://www.mdpi.com/1996-1073/12/15/2940
work_keys_str_mv	AT fasilayelegntassew granularsludgebedprocessesinanaerobicdigestionofparticlerichsubstrates AT wenchehenniebergland granularsludgebedprocessesinanaerobicdigestionofparticlerichsubstrates AT carlosdinamarca granularsludgebedprocessesinanaerobicdigestionofparticlerichsubstrates AT roaldkommedal granularsludgebedprocessesinanaerobicdigestionofparticlerichsubstrates AT runebakke granularsludgebedprocessesinanaerobicdigestionofparticlerichsubstrates
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Granular Sludge Bed Processes in Anaerobic Digestion of Particle-Rich Substrates

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