Enhanced biogas production by anaerobic digestion of food waste using biofilm technology

Alam, Md Zahangir and Mohamed Ali, Amina and Jami, Mohammed Saedi (2023) Enhanced biogas production by anaerobic digestion of food waste using biofilm technology. In: Cradle to Cradle of Environment through Technology; A Sustainable Perspective; Incorporating Technologies into Environment. LifeVision Resources, Seremban, Negeri Sembilan, pp. 339-370.

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Abstract

Anaerobic digestion (AD) of the wastes and/or wastewaters, i.e., food waste and domestic wastewater sludge as the major renewable resource, is an alternative economic and environmental solution for biogas production. However, the complex organic content in these wastes (e.g., polysaccharides, proteins and lipids) is the “bottleneck,” leading to low biogas production yield. Many studies have been recorded with the treatments, including physical, chemical and biological pretreatment processes for a high biogas production rate. However, these processes are showed unfavorable limiting factors in the processes due to the lack of a complete degradation process. Biofilmmediated anaerobic digestion of organic wastes is a new field of study that has yet to be explored deeply, particularly in food waste and domestic wastewaters. The present study focuses on the current knowledge available in the use of biofilm technologies for the waste treatment process and shows the opportunity of using biofilm in the hydrolysis step of food waste to increase biogas production. As such, biofilm-producing microorganism was first cultivated and immobilized on granular activated carbon (GAC) with different quantities of biofilm to incorporate hydrolysis process in a batch mode towards enhanced biogas production. Development of anaerobic digestion (AD) of the hydrolyzed food waste operated in a semi-continuous mode has shown an increase in the volume of biogas to approximately 2000 mL/500 mL of feed for 50% of inoculum to feed ratio while low yields are observed for 30 % and 10 % of inoculum to feed ratio and control respectively. This shows a 4-fold increase in the biogas with the biofilm pretreatment method.

Item Type:	Book Chapter
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Prof. Ir. Dr. Mohammed Saedi Jami, PhD CEng MIChemE
Date Deposited:	20 Jul 2023 15:53
Last Modified:	09 Jan 2024 12:03
URI:	http://irep.iium.edu.my/id/eprint/105645

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