Nickel-iron doped on granular activated carbon for efficient immobilization in biohydrogen production

Mohd Jamaludin, Nina Farhana and Abdullah, Luqman Chuah and Idrus, Syazwani and Engliman, Nurul Sakinah and Tan, Jian Ping and Jamali, Nur Syakina (2024) Nickel-iron doped on granular activated carbon for efficient immobilization in biohydrogen production. Bioresource Technology, 391. pp. 1-11. ISSN 0960-8524 E-ISSN 1873-2976

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Abstract

Nickel-iron doped granular activated carbon (GAC-N) was used to enhance immobilization in biohydrogen production. The effect of the sludge ratio to GAC-N, ranged 1:0.5–4, was studied. The optimum hydrogen yield (HY) of 1.64 ± 0.04 mol H2/mol sugar consumed and hydrogen production rate (HPR) of 45.67 ± 1.00 ml H2/L.h was achieved at a ratio of 1:1. Immobilization study was performed at 2 d HRT with a stable HY of 2.94 ± 0.16 mol H2/mol sugar consumed (HPR of 83.10 ± 4.61 ml H2/L.h), shorten biohydrogen production from 66 d to 26 d, incrementing HY by 57.30 %. The Monod model resulted in the optimum initial sugar, maximum specific growth rate, specific growth rate, and cell growth saturation coefficient at 20 g/L, 2.05 h−1, 1.98 h−1 and 6.96 g/L, respectively. The dominant bacteria identified was Thermoanaerobacterium spp. The GAC-N showed potential as a medium for immobilization to improve biohydrogen production.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Thermophilic dark fermentation, Biohydrogen production, Metal-doped granular activated carbon, Cell immobilization, Sugar utilization by Monod model
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Engineering
Depositing User:	Dr Nurul Sakinah Engliman
Date Deposited:	08 Aug 2024 11:31
Last Modified:	08 Aug 2024 11:31
URI:	http://irep.iium.edu.my/id/eprint/112930

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