Enzymatic hydrolysis for Methane production from hydrolysate food waste

Alam, Md. Zahangir and Saedi, Azrin and Mansor, Mariatul Fadzillah and Deb, Nibedita and Rahman, Tawfikur (2023) Enzymatic hydrolysis for Methane production from hydrolysate food waste. In: 7th International Conference on Chemical Engineering (ICChE 2023), 20-22 December 2023, Dhaka. (Unpublished)

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Abstract

The study aimed to assess how different pretreatment methods affect the enzymatic breakdown of carbohydrate-rich food waste, including cellulose, glucose, starch, lignin, and hemicellulose. The goal was to use these sugars effectively to reduce methane production costs. Using kinetic modelling, the study tested various pretreatment techniques, intending to promote the economical use of waste materials in microbial fermentations, thus reducing production expenses. The findings aimed to support waste material utilization for cost reduction. Anaerobic digestion experiments were conducted using sewage sludge under stable conditions (pH 7, 30°C) for 28 days. Samples were untreated or treated with hydrolytic enzymes. After 5 days, both groups exhibited reducing sugar concentrations. The untreated group had the highest rate of production (23 day-1), while the lowest was in samples treated with 50% cellulose and 50% amylase (28 day-1). The study found that excluding nutrients substantially enhanced biogas concentrations, suggesting that using food waste without added nutrients and a 5-day hydrolysis could significantly cut production costs. However, further optimization is necessary for higher yields.

Item Type:	Proceeding Paper (Invited Papers)
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP315 Fuel
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr. Md. Zahangir Alam
Date Deposited:	06 Mar 2024 12:20
Last Modified:	06 Mar 2024 12:20
URI:	http://irep.iium.edu.my/id/eprint/111120

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