Abstract—Emulsion liquid membrane was formulated using MDEA and piperazine as extractant in sodium hydroxide solution. Span-80 in the organic solution acts as surfactant to stabilize the formation emulsion. The effects of MDEA/PZ ratio on emulsion stability and CO
2 absorption were investigated. CO
2 absorption was carried out in rotating disc contactor (RDC) column and gas chromatography (GC) was used to determine the amount of CO
2 leaving the column. This study showed that 8% v/v Span-80 has produced a stable emulsion. The emulsion was able to remove 60.3% of CO
2. In the presence of methane (CH
4), 54.1% of CO
2 and 13.2% of CH4 were removed from CH
4/CO
2 mixtures. The finding demonstrates the promising technique of ELM for CO
2 removal.
Index Terms—Emulsion liquid membrane, carbon dioxide, removal, stability.
K. S. N. Kamarudin and S. B. M. Najib are with the Faculty of Petroleum and Renewable Energy Engineering, Universiti Teknologi, Malaysia (e-mail: sozana@petroleum.utm.my, balqisnajib@gmail.com).
N. Dolmat was with Faculty of Petroleum and Renewable Energy Engineering, Universiti Teknologi Malaysia. Now, she is with the Petronas Research Sdn. Bhd, Malaysia (e-mail: nor.deela@gmail.com).
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Cite: Kamarudin K. S. N., Dolmat N., and Najib S. B. M., "Methyldiethanolamine and Piperazine as Extractant in Emulsion Liquid Membrane for Carbon Dioxide Removal," International Journal of Chemical Engineering and Applications vol. 6, no. 5, pp. 314-318, 2015.
