Subcritical water pretreatment for anaerobic digestion enhancement: a review

Adila Fazliyana Aili Hamzah and Muhammad Hazwan Hamzah and Hasfalina Che Man and Syakina Jamali and Shamsul Izhar Siajam and Pau, Loke Show (2023) Subcritical water pretreatment for anaerobic digestion enhancement: a review. Pertanika Journal of Science & Technology (Malaysia), 31 (2). pp. 1011-1034. ISSN 2231-8526

This work reviews hydrothermal subcritical water pretreatment to enhance biogas production through anaerobic digestion. The complexity of the lignocellulosic structure has been the main limitation contributing to unsatisfactory biogas production throughout the anaerobic digestion. The high resistance of the structure to biological hydrolysis has increased the interest in applying pretreatment prior to anaerobic digestion to facilitate hydrolysis. Hydrothermal subcritical water technology, an environmentally friendly pretreatment that uses water as the main medium, is gaining prominence in biogas enhancement. However, the subcritical water pretreatment influence on structural properties, biogas production, and the production of anaerobic process inhibitors signifies a knowledge gap and needs an evaluation. This review presents the need for pretreatment reaction and properties in the subcritical water region, biogas production from subcritical water pre-treated waste, production of inhibitors, and its challenges are discussed. This pretreatment could be a promising option and further enhance biogas production throughout the anaerobic digestion process.

Full text available from: Official URL: http://www.pertanika.upm.edu.my/resources/files/Pe...

Abstract

This work reviews hydrothermal subcritical water pretreatment to enhance biogas production through anaerobic digestion. The complexity of the lignocellulosic structure has been the main limitation contributing to unsatisfactory biogas production throughout the anaerobic digestion. The high resistance of the structure to biological hydrolysis has increased the interest in applying pretreatment prior to anaerobic digestion to facilitate hydrolysis. Hydrothermal subcritical water technology, an environmentally friendly pretreatment that uses water as the main medium, is gaining prominence in biogas enhancement. However, the subcritical water pretreatment influence on structural properties, biogas production, and the production of anaerobic process inhibitors signifies a knowledge gap and needs an evaluation. This review presents the need for pretreatment reaction and properties in the subcritical water region, biogas production from subcritical water pre-treated waste, production of inhibitors, and its challenges are discussed. This pretreatment could be a promising option and further enhance biogas production throughout the anaerobic digestion process.

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Item Type:	Article
AGROVOC Term:	water treatment
AGROVOC Term:	anaerobic treatment
AGROVOC Term:	biogas
AGROVOC Term:	hydrolysis
AGROVOC Term:	hydrothermal activity
AGROVOC Term:	agricultural wastes
AGROVOC Term:	waste treatment
AGROVOC Term:	sustainability
Geographical Term:	Malaysia
Uncontrolled Keywords:	Anaerobic digestion, biogas, hydrothermal, lignocellulosic pretreatment, subcritical water
Depositing User:	Ms. Azariah Hashim
Date Deposited:	27 Jan 2025 01:47
Last Modified:	27 Jan 2025 02:32
URI:	http://webagris.upm.edu.my/id/eprint/1907

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