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Improvement of Anaerobic Digestion of Lignocellulosic Biomass by Hydrothermal Pretreatment
Review

A Review on Anaerobic Digestion of Lignocellulosic Wastes: Pretreatments and Operational Conditions

1
Department of Environment and Sustainable Agriculture, Faculty of Agricultural Sciences and Technology, Palestine Technical University-Kadoorie, 7 Tulkarm, Palestine
2
Departament d’Enginyeria Química, Biològica i Ambiental, Escola d’Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(21), 4655; https://doi.org/10.3390/app9214655
Received: 30 August 2019 / Revised: 11 October 2019 / Accepted: 15 October 2019 / Published: 1 November 2019
(This article belongs to the Special Issue Anaerobic Co-Digestion of Lignocellulosic Waste)
Anaerobic digestion (AD) has become extremely popular in the last years to treat and valorize organic wastes both at laboratory and industrial scales, for a wide range of highly produced organic wastes: municipal wastes, wastewater sludge, manure, agrowastes, food industry residuals, etc. Although the principles of AD are well known, it is very important to highlight that knowing the biochemical composition of waste is crucial in order to know its anaerobic biodegradability, which makes an AD process economically feasible. In this paper, we review the main principles of AD, moving to the specific features of lignocellulosic wastes, especially regarding the pretreatments that can enhance the biogas production of such wastes. The main point to consider is that lignocellulosic wastes are present in any organic wastes, and sometimes are the major fraction. Therefore, improving their AD could cause a boost in the development in this technology. The conclusions are that there is no unique strategy to improve the anaerobic biodegradability of lignocellulosic wastes, but pretreatments and codigestion both have an important role on this issue. View Full-Text
Keywords: feedstock and degradation pathway; AD systems; pretreatment technologies; process stability; codigestion feedstock and degradation pathway; AD systems; pretreatment technologies; process stability; codigestion
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MDPI and ACS Style

Sayara, T.; Sánchez, A. A Review on Anaerobic Digestion of Lignocellulosic Wastes: Pretreatments and Operational Conditions. Appl. Sci. 2019, 9, 4655. https://doi.org/10.3390/app9214655

AMA Style

Sayara T, Sánchez A. A Review on Anaerobic Digestion of Lignocellulosic Wastes: Pretreatments and Operational Conditions. Applied Sciences. 2019; 9(21):4655. https://doi.org/10.3390/app9214655

Chicago/Turabian Style

Sayara, Tahseen, and Antoni Sánchez. 2019. "A Review on Anaerobic Digestion of Lignocellulosic Wastes: Pretreatments and Operational Conditions" Applied Sciences 9, no. 21: 4655. https://doi.org/10.3390/app9214655

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