The Effects of Using Pretreated Cotton Gin Trash on the Production of Biogas from Anaerobic Co-Digestion with Cow Manure and Sludge

Muhammad Usman Hanif; Mohammed Zwawi; Mohammed Algarni; Ali Bahadar; Hamid Iqbal; Sergio C. Capareda; Muhammad Adnan Hanif; Adeel Waqas; Nazia Hossain; Muhammad Tahir Hussain Siddiqui; Sabzoi Nizamuddin; Asma Jamil

doi:10.3390/en15020490

Energies (Jan 2022)

The Effects of Using Pretreated Cotton Gin Trash on the Production of Biogas from Anaerobic Co-Digestion with Cow Manure and Sludge

Muhammad Usman Hanif,
Mohammed Zwawi,
Mohammed Algarni,
Ali Bahadar,
Hamid Iqbal,
Sergio C. Capareda,
Muhammad Adnan Hanif,
Adeel Waqas,
Nazia Hossain,
Muhammad Tahir Hussain Siddiqui,
Sabzoi Nizamuddin,
Asma Jamil

Affiliations

Muhammad Usman Hanif: Institute of Environmental Science and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Sector H-12, Islamabad 44000, Pakistan
Mohammed Zwawi: Department of Mechanical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Mohammed Algarni: Department of Mechanical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Ali Bahadar: Department of Chemical and Materials Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Hamid Iqbal: Institute of Environmental Science and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Sector H-12, Islamabad 44000, Pakistan
Sergio C. Capareda: Bio-Energy Testing and Analysis Laboratory (BETA Lab), Biological and Agricultural Engineering Department, Texas A & M University, College Station, TX 77843, USA
Muhammad Adnan Hanif: School of Sustainability, Arizona State University, Tempe, AZ 85281, USA
Adeel Waqas: Center for Advanced Studies in Energy, National University of Sciences and Technology, Islamabad 45710, Pakistan
Nazia Hossain: School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
Muhammad Tahir Hussain Siddiqui: School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
Sabzoi Nizamuddin: School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
Asma Jamil: Department of Earth and Environmental Sciences, Islamabad Campus, Bahria University, Islamabad 45710, Pakistan

DOI: https://doi.org/10.3390/en15020490
Journal volume & issue: Vol. 15, no. 2
p. 490

Abstract

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Anaerobic co-digestion (AcoD) has been practiced for decades to convert waste into value-added energy products, especially biogas. This study aimed to assess the potential of biogenic methane (CH4) production from the co-digestion of pretreated cotton gin trash (CGT), cow manure, and sludge. CGT contains high cellulosic content, making it a reliable feedstock for biogenic methane production. To further improve the biogas quantity and quality, the CGT was subjected to physical pretreatments, i.e., hot water (HW), ultra-sonication (US), and a combination of both (HW+US). After 91 days of AcoD, 79–110 L of biogas was produced by the treatments. Among the treatments, HW+US-pretreated CGT presented maximum biogas production capacity, at 110 L. Besides, this treatment showed the high-quality biogenic CH4 content, 52.4% of the total biogas volume, with an improved conversion rate of 0.37 L/g of volatile suspended solids consumed. In addition, this study discussed the structural changes in feedstock due to pretreatments and correlated them with the corresponding biogenic methane production. The study reports the potential of pretreated CGT conversion to CH4. It will impact the circular economy by contributing to on-farm energy requirements and reducing the financial expenditures incurred in this regard.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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