Optimization of the Biomethane Production Process by Anaerobic Digestion of Wheat Straw Using Chemical Pretreatments Coupled with Ultrasonic Disintegration

Yasmine Ryma Ouahabi, Kenza Bensadok and Abdeldjalil Ouahabi
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Yasmine Ryma Ouahabi: Laboratoire des Sciences du Génie des Procédés et Environnement, Université des Sciences et de la Technologie Houari Boumediene, Algiers 16111, Algeria
Kenza Bensadok: Laboratoire des Sciences du Génie des Procédés et Environnement, Université des Sciences et de la Technologie Houari Boumediene, Algiers 16111, Algeria
Abdeldjalil Ouahabi: UMR 1253, iBrain, Université de Tours, Inserm, 37000 Tours, France

Sustainability, 2021, vol. 13, issue 13, 1-18

Abstract: Biomass is an attractive energy source that can be used for production of heat, power, and transport fuels and when produced and used on a sustainable basis, can make a large contribution to reducing greenhouse gas emissions. Anaerobic digestion (AD) is a suitable technology for reducing organic matter and generating bioenergy in the form of biogas. This study investigated the factors allowing the optimization of the process of biogas production from the digestion of wheat straw (WS). The statistical analysis of the experiments carried out showed that ultrasonic processing plays a fundamental role with the sonication density and solids concentration leading to improved characteristics of WS, reducing particle size, and increasing concentration of soluble chemical oxygen demand. The higher the sonicating power used, the more the waste particles are disrupted. The optimality obtained under mesophilic conditions for WS pretreated with 4% w / w (weight by weight) H 2 O 2 at temperature 36 °C under 10 min of ultrasonication at 24 kHz with a power of 200 W improves the methane yield by 64%.

Keywords: anaerobic digestion; biogas enhancement; biomass; chemical pretreatment; ultrasound disintegration; wheat straw (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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