CO₂ Absorption from Biogas by Glycerol: Conducted in Semi-Batch Bubble Column

Abstract

Abstract. Biogas is a renewable energy source that has been developed recently. The main contents of Biogas itself are Methane and carbon dioxide (CO 2 ) where Methane is the main component of biogas with CO 2 as the highest impurities. The quality of biogas depends on the CO 2 content, the lower CO 2 levels, the higher biogas quality. Absorption is one of the methods to reduce CO 2 level. The selections of absorbent and appropriate operating parameters are important factors in the CO 2 absorption from biogas. This study aimed to find out the design parameters for CO 2 absorption using glycerol that represented by the overall mass transfer coefficient (K L a) and Henry's constant (H). This study was conducted in semi-batch bubble column. Mixed gas was contacted with glycerol in a bubble column. The concentration of CO 2 in the feed gas inlet and outlet columns were analysed by Gas Chromatograph. The variables observed in this study were superficial gas velocity and temperatures. The results showed that higher superficial gas velocity and lower temperature increased the rate of absorption process and the amount of CO 2 absorbed.

Synthesis and Properties of 1,2,3-Triethoxypropane: A Glycerol-Derived Green Solvent Candidate

“…The negative value agrees with the expectation of exothermic absorption. Moreover, a K H px – T (°C) curve was created for 1,2,3-TEP using eq , which is shown in the form of a red line in Figure along with performances of other compounds found in the literature including toluene, MeOH, EtOH ,, –propanol, acetone, ethyl acetate (EtOAC), THF, CH 2 Cl 2 , pyridine, DMF, hexane , –DEP, glycerol, and diglyme . Detailed CO 2 absorption data for these solvents can be found in Table S7.…”