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Interaction effect of co-digestion sewage sludge and food waste for production of biogas

Hosen, Md Sabuj and Mansor, Mariatul Fadzillah and Mohd Ali, Ainoor Mariana and Alam, Md Zahangir (2020) Interaction effect of co-digestion sewage sludge and food waste for production of biogas. Biological And Natural Resources Engineering Journal, 3 (1). pp. 37-47. E-ISSN 2637-0719

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Increasing population, urbanization and industrial activities have increased the amount of solid waste worldwide. Food waste (FW) and sewage sludge (SS) are some of the solid wastes. Co-digesting of both substrates may improve process stabilization to increase biogas production and overcome the nutrients imbalance. Thus, anaerobic co-digestion has been recognized as a technology that could provide a clean renewable energy source and help reducing the landfill problem. In this study, the interaction between FW and SS as co-substrates in anaerobic digestion was studied under mesophilic temperature 36C (± 0.5). The experiments were conducted using five batch reactors with different ratios of substrates. There are four different analyses used to identify the characteristics of FW and SS, which are pH, reducing sugar (RS), total solid (TS), and total carbohydrate (TC). Water displacement method was used to record biogas yield. The experimental results showed that the highest biogas yield was from the composition of 50:50 (FW: SS) with a biogas volume of 1150.14 mL, while the least was the composition of 0:100 (FW: SS) with 170.47 mL biogas produced. The results for substrate degradation showed that the composition of 100:0 (FW: SS) has the highest percentage degradation for reducing sugar with the percentage of 56%, while the minimum was 0:100 (FW: SS) with a percentage of 35%. Besides, for TC, the highest percentage of degradation was the composition 50:50 (FW: SS) with 84%, and the least was 0:100 (FW: SS) with 44%. This study proves that using FW and SS enhanced biogas production as well as reducing the current issues of waste disposal.

Item Type: Article (Journal)
Additional Information: 7775/82921
Uncontrolled Keywords: Anaerobic co-digestion, Food waste, Sewage sludge, and Biogas.
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD169 Environmental protection
T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP248.13 Biotechnology
T Technology > TP Chemical technology > TP500 Fermentation industries. Beverages. Alcohol
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Biotechnology Engineering
Kulliyyah of Engineering
Date Deposited: 14 Sep 2020 12:36
Last Modified: 14 Sep 2020 12:36
URI: http://irep.iium.edu.my/id/eprint/82921

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