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Carbon dioxide contributed great amount of Green House Gas (GHG) emission. Solid adsorption is one of the way to ease carbon dioxide emission. The effectiveness of CO2 adsorption by solid K2CO3/rice husk in fixed bed column by evaluated adsorption capacity, breakpoint time and length of effective bed height/HB were investigated. K2CO3 used as adsorbent and rice husk as support. The K2CO3 adsorption occurred at fixed bed column under mild condition. The CO2 inlet and outlet concentration were analysed by acid-base titration. The highest adsorption capacity by K2CO3/rice husk is 0.2 mmol/g adsorbent at CO2 inlet flow rate 28 LPM with 50 gr K2CO3. Meanwhile, the highest breakpoint time is 685.5 second which at CO2 flow rate 15.9 LPM and K2CO3 adsorbent 50 gr. Perhaps, variation of CO2 flow rate and amount of adsorbent do not affect CO2 adsorption capacity significantly.