Effect of clay composite derived hydroxyapatite on activated carbon for biogas production
Hydroxyapatite (HAp), a calcium phosphate-based nanomaterial, has gained significant attention due to its exceptional biocompatibility. The integration of HAp into Clay-Hydroxyapatite with activated carbon (CHAp) composite offers a novel solution to improve microbial retention, biofilm formation,...
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| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
2025
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/123545/1/123545.pdf http://psasir.upm.edu.my/id/eprint/123545/ |
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| Summary: | Hydroxyapatite (HAp), a calcium phosphate-based nanomaterial, has gained significant attention due to its
exceptional biocompatibility. The integration of HAp into Clay-Hydroxyapatite with activated carbon
(CHAp) composite offers a novel solution to improve microbial retention, biofilm formation, and overall
process stability in biomethane production systems. This study evaluates the effects of clay-hydroxyapatite
as bio-media for biomethane production and biofilm formation within a Sequencing Batch Reactor (SBR).
The fermentation process utilized synthetic media and cattle dung at 37°C with a hydraulic retention time of
40 days and assessed the effect of CHAp influences microbial performance in Scanning Electron
Microscopy (SEM). The results indicated that formulated CHAp achieving a methane productivity rate of
15.9 mmol CH4/L·d, 344 mL/L.d and a methane yield of 8.32 mol CH4/mol TC. The carrier shows
stabilization and indicate the capability of bacteria to stabilize from control (229.2 mL/L.d) to formulated
CHAp media (344.4 mL/L.d) for biogas production rate and 292.2 mL/L.d to 388.9 mL/L.d to methane
production rate, along with biofilm growth from 23.9 g/g CHAp to 44.4 g/g CHAp, when the HRT was
reduced from 40 to 14 days. SEM images confirmed the presence of methanogenic microorganisms and this
formulation is promising for enhancing biomethane production in SBR systems. |
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