Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production

It is urgent to determine suitable municipal sludge treatment solutions to simultaneously minimize the environmental negative impacts and achieve sustainable energy benefits. In this study, different sludge pretreatment techniques were applied and investigated to enhance the sludge solubility and, s...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jeong-Yoon Ahn, Soon-Woong Chang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sewage sludge treatment sludge solubilization sludge pretreatment anaerobic digestion methane yield mechanical pretreatment Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/73f8a9b9724146d59aafb8090f8855a0
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:73f8a9b9724146d59aafb8090f8855a0
record_format	dspace
spelling	oai:doaj.org-article:73f8a9b9724146d59aafb8090f8855a02021-11-25T19:05:13ZEffects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production10.3390/su1322128872071-1050https://doaj.org/article/73f8a9b9724146d59aafb8090f8855a02021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12887https://doaj.org/toc/2071-1050It is urgent to determine suitable municipal sludge treatment solutions to simultaneously minimize the environmental negative impacts and achieve sustainable energy benefits. In this study, different sludge pretreatment techniques were applied and investigated to enhance the sludge solubility and, subsequently, facilitate the anaerobic biodegradation performance of the mixed sludge under different sludge concentrations and pretreatment techniques. The sludge characteristics before and after pretreatment and batch experiments of anaerobic digestion of sludge samples under different conditions were analyzed and discussed. The results showed that the mechanical pretreatment method, alone and in combination with low-temperature heat treatment, significantly improved the sludge solubility, with the highest solubility at 39.23%. The maximum biomethane yield achieved was 0.43 m<sup>3</sup>/kg after 10 d of anaerobic digestion of a 3% sludge sample subjected to mechanical and thermal pretreatment prior to anaerobic biodegradation. In comparison, it took more than 28 d to achieve the same biomethane production with the unpretreated sludge sample. Mechanical pretreatment and subsequent heat treatment showed a high ability to dissolve sludge and, subsequently, accelerate anaerobic digestion, thereby providing promising prospects for increasing the treatment capacity of existing and new sludge treatment plants.Jeong-Yoon AhnSoon-Woong ChangMDPI AGarticlesewage sludge treatmentsludge solubilizationsludge pretreatmentanaerobic digestionmethane yieldmechanical pretreatmentEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12887, p 12887 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sewage sludge treatment sludge solubilization sludge pretreatment anaerobic digestion methane yield mechanical pretreatment Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	sewage sludge treatment sludge solubilization sludge pretreatment anaerobic digestion methane yield mechanical pretreatment Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Jeong-Yoon Ahn Soon-Woong Chang Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production
description	It is urgent to determine suitable municipal sludge treatment solutions to simultaneously minimize the environmental negative impacts and achieve sustainable energy benefits. In this study, different sludge pretreatment techniques were applied and investigated to enhance the sludge solubility and, subsequently, facilitate the anaerobic biodegradation performance of the mixed sludge under different sludge concentrations and pretreatment techniques. The sludge characteristics before and after pretreatment and batch experiments of anaerobic digestion of sludge samples under different conditions were analyzed and discussed. The results showed that the mechanical pretreatment method, alone and in combination with low-temperature heat treatment, significantly improved the sludge solubility, with the highest solubility at 39.23%. The maximum biomethane yield achieved was 0.43 m<sup>3</sup>/kg after 10 d of anaerobic digestion of a 3% sludge sample subjected to mechanical and thermal pretreatment prior to anaerobic biodegradation. In comparison, it took more than 28 d to achieve the same biomethane production with the unpretreated sludge sample. Mechanical pretreatment and subsequent heat treatment showed a high ability to dissolve sludge and, subsequently, accelerate anaerobic digestion, thereby providing promising prospects for increasing the treatment capacity of existing and new sludge treatment plants.
format	article
author	Jeong-Yoon Ahn Soon-Woong Chang
author_facet	Jeong-Yoon Ahn Soon-Woong Chang
author_sort	Jeong-Yoon Ahn
title	Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production
title_short	Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production
title_full	Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production
title_fullStr	Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production
title_full_unstemmed	Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production
title_sort	effects of sludge concentration and disintegration/solubilization pretreatment methods on increasing anaerobic biodegradation efficiency and biogas production
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/73f8a9b9724146d59aafb8090f8855a0
work_keys_str_mv	AT jeongyoonahn effectsofsludgeconcentrationanddisintegrationsolubilizationpretreatmentmethodsonincreasinganaerobicbiodegradationefficiencyandbiogasproduction AT soonwoongchang effectsofsludgeconcentrationanddisintegrationsolubilizationpretreatmentmethodsonincreasinganaerobicbiodegradationefficiencyandbiogasproduction
_version_	1718410345703276544

Effects of Sludge Concentration and Disintegration/Solubilization Pretreatment Methods on Increasing Anaerobic Biodegradation Efficiency and Biogas Production

Ejemplares similares