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, 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.

Text 123545.pdf - Published Version Restricted to Repository staff only Download (3MB) | Request a copy

Actions (login required)

View Item