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Babul Prasad,Bishnupada Mandal 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.66 No.-
This study involves the addition of poly(allylamine) (PAA) with chitosan (CS) for facilitated CO2 transport. Detailed characterizations of the membranes including advance microscopic analysis, thermal stability, stiffness, etc. were investigated. The CO2 separation studies from binary gas mixture indicated the superior CO2 permeance and CO2/N2 selectivity of the PAA30 (70 wt% CS + 30 wt% PAA) membrane at 90 °C and feed absolute pressure of 2 bar. Further, CO2 separation performance of PAA30 was gauged under varying conditions. The performance above the Robeson upper bound plot, displayed the potential of the PAA30 membrane for industrial flue gas separation.
Piperazine-activated diethanolamine formulation for post-combustion CO2 capture
Bisweswar Das,Haijun Guo,Lian Xiong,Bishnupada Mandal,Arindam Modak,Kamal Kishore Pant,Xinde Chen 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
Although activated alkanolamine based solvents had great potential for energy-efficient post-combustionCO2 capture, yet these suffers from disadvantageous due to high capital cost of the process. In thisresearch we developed and discussed the overall reaction scheme between CO2 and activated solvents. We investigated the kinetics of CO2 into piperazine (PZ) activated aqueous diethanolamine (DEA) bywetted-wall column contactor at (298–323) K, (5–15) kPa and fixed 3.0 kmol∙m3. Physicochemical propertiesof such systems were determined while detailed uncertainty analysis were conducted. In thermodynamicspoint of view, liquid–liquid interaction were explored and evaluated by related parameters. The kinetics rate parameters for such activated solvents were interpreted based on kinetic study affordingto the pseudo-first-order reaction method. At various temperature, kov of (PZ + DEA + H2O) were considerablylarger than reported (AMP + PZ + H2O) systems. The results of kinetics study demonstrated thatrate of CO2 in solvents were enhanced substantially as compared to DEA due to the addition of low quantity(0–0.45 kmol∙m3) PZ into solvents. Besides, physicochemical properties were measured in terms ofdifferent models with absolute average deviation (AAD) < 5 %. Ultimately, (PZ + DEA + H2O) may be consideredas vital solvents in amine scrubbing due to lower energy requirement for CO2 capture comparedto (PZ + MEA + H2O).