Citation
Abstract
Carbon composites-immobilized cell was utilized to enhance biohydrogen production. The initial pH, temperature and agitation effect was studied using the one-factor-at-a-time (OFAT) method. The optimal initial pH obtained was at pH 6.0 with hydrogen yield (HY) of 2.66 ± 0.09 mol H2/mol sugar, correlating with Gompertz constant of Hm = 974.99 mL, Rm = 17.90 mL/h and λ = 1.70 h. At 60 °C, the highest HY was obtained at 2.75 ± 0.11 mol H2/mol sugar. These corresponded to the Gompertz constant of Hm = 934.58 mL, Rm = 18.78 mL/h and λ = 1.89 h. The optimal agitation obtained was at 120 rpm, attaining the highest HY of 3.44 ± 0.54 mol H2/mol sugar, corresponding to the Gompertz constant of Hm = 1054.86 mL, Rm = 24.37 mL/h and λ = 3.90 h. The rRNA sequencing result revealed that the predominant species in the study was Thermoanaerobacterium. This study provides critical insight into process control conditions on biohydrogen production.
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Additional Metadata
Item Type: | Article |
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Divisions: | Faculty of Engineering Institut Nanosains dan Nanoteknologi |
DOI Number: | https://doi.org/10.1016/j.cej.2024.149980 |
Publisher: | Elsevier |
Keywords: | Dark fermentation; Granular activated carbon nanocomposites; Immobilized cell; Process parameter; Thermophilic biohydrogen production |
Depositing User: | Ms. Che Wa Zakaria |
Date Deposited: | 07 Jul 2025 08:26 |
Last Modified: | 07 Jul 2025 08:26 |
Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.cej.2024.149980 |
URI: | http://psasir.upm.edu.my/id/eprint/116600 |
Statistic Details: | View Download Statistic |
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