Authors : Zheng Yong Gan and Lee Chung Lau
Abstract: Due to large amount of biogas produced from anaerobic digestion of palm oil mill effluent, it has great potential to be used as a renewable energy in Malaysia. Before biogas can combusted, removal of impurities such as carbon dioxide is essentially necessary. However, the lack of detailed study on the process conditions and economics has restrained the deployment of this technology in this country. Therefore in this study, biogas upgrading process using pressure swing adsorption technology is simulated and optimized to minimize the payback period of initial investment. The study showed that operating pressure, residence time and flow rate were the most significant parameters. The optimized process conditions were obtained at 7.5 bar operating pressure, 450 m3/h flow rate, 2.125 m bed length and 0.389 h residence time. The corresponding biogas methane content and payback period were 98% and 3.135 years, respectively. Comparing to other study, the optimized result showed great potential to deploy this technology in Malaysia.
Zheng Yong Gan and Lee Chung Lau, 2017. Optimization of Pressure Swing Adsorption Based Biogas Upgrading Process Using Aspen Adsorption Coupled with Design Expert Software. Journal of Engineering and Applied Sciences, 12: 8485-8489.