Nickel-iron doped on granular activated carbon for efficient immobilization in biohydrogen production
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...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Elsevier Ltd
2024
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/112930/13/112930_Nickel-iron%20doped%20on%20granular.pdf http://irep.iium.edu.my/112930/14/112930_Nickel-iron%20doped%20on%20granular_Scopus.pdf http://irep.iium.edu.my/112930/ https://www.sciencedirect.com/science/article/abs/pii/S0960852423013615?via%3Dihub https://doi.org/10.1016/j.biortech.2023.129933 |
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| Summary: | 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. |
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