Siddique, Md. Nurul Islam and Aina, Kamil and Mohd Zamri, Ibrahim and Noraaini, Ali and Nazaitulshila, Rasit and Shahrul, Ismail and Zaied, Khalid and Wan Sani, Wan Nik (2023) The co-production of hydrogen and methane from dark fermentation of mixed palm oil mill effluent and aquaculture wastewater : Gompertz modelling and sludge recovery. Asian Journal of Chemistry, 35 (4). pp. 1031-1036. ISSN 0970-7077. (Published)
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Abstract
The potentials for non-stop hydrogen and methane production employing an ideal loading mixture of palm oil mill effluent (POME) and aquaculture wastewater (AWW) in a double-phase digester at a thermophilic state are presented. Different organic loadings were studied such as 31, 41, 51 and 61 Kg COD/(m3d) for the generation of hydrogen; 9, 11, 14 and 16 kg COD/(m3d) for the synthesis of methane. In a UASB reactor, hydrogen production was kept under control with a constant HRT of 12 h. At the loading of 51 kg COD/h, the maximal H2content, volumetric H2generation rate and H2yield were observed as 46%, 6 L H2/d and 34 mL H2/g COD, respectively (m3d). After an HRT of 6 days, the substrate from the hydrogen digester was further fermented into methane in the CSTR digester. At an organic loading rate of 14 kg COD/h, the highest volumetric CH4generation rate and yield were 11 L CH4/d and 0.13 m3CH4/kg COD, respectively (m3d). This two-stage procedure removed 92% of the chemical oxygen requirement overall. Based on the findings, the Gompertz modeling was a good fit for the cumulative methane generation patterns, with a strong correlation coefficient (> 0.994). Sludge recovery was 0.07 m3sludge/m3wastewater and water recovery was 0.82 m3/m3wastewater. This double-phase technique has the potential to contribute greatly to the development of a comprehensive waste management plan, including the digestion of palm oil mill effluent and aquaculture wastewater.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Aquaculture wastewater; Dark fermentation; Fertilizer recovery; Hydrogen production; Methane production |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Civil Engineering Technology Faculty of Electrical and Electronic Engineering Technology |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 29 Aug 2023 07:20 |
| Last Modified: | 29 Aug 2023 07:20 |
| URI: | http://umpir.ump.edu.my/id/eprint/37592 |
| Download Statistic: | View Download Statistics |
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