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Methane Recovery and Carbon Dioxide Stripping by MEA Solution the Autocirculation Bubble Lift Column Reactor  

Lee, In-Hwa (Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University)
Kim, Sun-Yil (Department of Environmental Engineering, Chosun University)
Park, Ju-Young (Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University)
Publication Information
Applied Chemistry for Engineering / v.18, no.3, 2007 , pp. 239-244 More about this Journal
Abstract
For the simultaneous methane recovery and $CO_2$-stripping, we have been developed dual vent auto circulation bubble lift column reactor, and evaluate optimum conditions for monoethanolamine (MEA) solutions as a $CO_2$ absorbent. At the 5 wt% MEA solution, we investigated the pH change during $CO_2$-stripping and absorption reaction, $CO_2$-stripping rate with reaction time, methane recovery efficiency for various inflow rates of air, $CO_2$-stripping rate for flow liquid over flow height, and $CO_2$-stripping dependency on the temperature of absolvent solutions. The suggested optimum conditions for $CO_2$ recovery with MEA in the dual vent auto circulation bubble lift column reactor were 40 mm over flow liquid height, 1.5 L/min of air inflow rate, and $25^{\circ}C$ of absorbent solution temperature.
Keywords
carbon dioxide; methane; autocirculation bubble lift column reactor; gas purification; MEA (monoethanolamine);
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