Biogas enhancement using air stripping pre-treatment process in anaerobic digestion

Nurashikin Yaacof, . and Noraziah Ahmad, . (2024) Biogas enhancement using air stripping pre-treatment process in anaerobic digestion. International Journal of Biomass & Renewables (Malaysia), 13 (1). pp. 1-8. ISSN 2289-1692

Biogas is a form of renewable energy that could be a turning point in economic progress, and palm oil mill effluent (POME) is one of its primary sources in Malaysia. Due to the concerns regarding the quality of biogas from POME, this study was done to improve its quality by using the air-stripping method as the pre-treatment process in the wastewater treatment pond from the mill. Additionally, this procedure was recognised as one of the methods that can reduce the concentration of the chemical oxygen demand (COD), total suspended solids (TSS), and ammoniacal nitrogen (NHɜ-N) in the POME. The experiment was carried out using an air-stripping lab scale model with different pH levels and stripping times at consistent operational temperatures and flow rates. The experimental results showed that the higher removal efficiencies of COD, TSS, and NHɜ-N are 22.5%, 50%, and 92.8%, respectively, at pH of 12 and fourth days of the air stripping process. The highest biogas production rate is 5.54 ml/h on the first day of stripping time. It can be concluded that the reduction of NHɜ-N enhanced biogas production.

Full text available from: Official URL: https://myjms.mohe.gov.my/index.php/ijbr/article/v...

Abstract

Biogas is a form of renewable energy that could be a turning point in economic progress, and palm oil mill effluent (POME) is one of its primary sources in Malaysia. Due to the concerns regarding the quality of biogas from POME, this study was done to improve its quality by using the air-stripping method as the pre-treatment process in the wastewater treatment pond from the mill. Additionally, this procedure was recognised as one of the methods that can reduce the concentration of the chemical oxygen demand (COD), total suspended solids (TSS), and ammoniacal nitrogen (NHɜ-N) in the POME. The experiment was carried out using an air-stripping lab scale model with different pH levels and stripping times at consistent operational temperatures and flow rates. The experimental results showed that the higher removal efficiencies of COD, TSS, and NHɜ-N are 22.5%, 50%, and 92.8%, respectively, at pH of 12 and fourth days of the air stripping process. The highest biogas production rate is 5.54 ml/h on the first day of stripping time. It can be concluded that the reduction of NHɜ-N enhanced biogas production.

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Item Type:	Article
AGROVOC Term:	biogas
AGROVOC Term:	renewable energy
AGROVOC Term:	palm oils
AGROVOC Term:	wastewater treatment
AGROVOC Term:	anaerobic treatment
AGROVOC Term:	pH
AGROVOC Term:	water quality
AGROVOC Term:	energy generation
AGROVOC Term:	sustainability
Geographical Term:	Malaysia
Uncontrolled Keywords:	air stripping, anaerobic digestion, biogas, palm oil mill effluent
Depositing User:	Nor Hasnita Abdul Samat
Date Deposited:	23 Feb 2026 04:48
Last Modified:	23 Feb 2026 04:48
URI:	http://webagris.upm.edu.my/id/eprint/2650

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