CO 2 Absorption from Biogas Using Piperazine-Promoted 2-Amino-2-methyl-1-propanol: Process Performance in a Packed Column.

Rajiman, Viga; Abdul Halim, Hairul Nazirah; Shariff, Azmi Mohd; Shahid, Muhammad Zubair; Maulud, Abdulhalim Shah; Lau, Kok Keong; Tan, Lian See

In this work, CO2 absorption from simulated biogas is investigated using different blends of a PZ + AMP solution in an absorption system at CO2 partial pressures ranging between 20 and 110 kPa. The collected data were presented as CO2 removal profiles along the packed column and were evaluated in terms of CO2 removal efficiency (%) and average overall volumetric mass transfer coefficient in the gas phase ( K G a v ¯ ). An increased PZ concentration in the AMP solution was found to significantly increase the CO2 removal efficiency and K G a v ¯ values. It was observed that, when conducted at different CO2 partial pressures, gas and liquid flow rates, and chemical concentrations, the L a m i n e / G C O 2 ratio strongly influenced the process behaviour in the packed column. Additionally, the optimal inlet liquid temperature was observed to be 35 ± 2 °C in this study.

MASS transfer coefficients; PACKED towers (Chemical engineering); BIOGAS; CARBON dioxide; PARTIAL pressure; ABSORPTION; GAS flow

Sustainability (2071-1050), 2022, Vol 14, Issue 12, pN.PAG

2071-1050

Academic Journal

10.3390/su14127095