Techno-economics of liquid absorbent-based post-combustion CO2 processes

Ionic Liquid as a Selective Capture Method of CO2 from Different Sources: Comparison with MEA

“…Process Economic Evaluation and Optimization. To ensure the performance of CO 2 capture processes, the following recovery constraints are imposed: ≥ CO purity 0.9 2 (16) where the CO 2 purity is the mole fraction of CO 2 in the product ("SEQ" stream).…”

“…Also, most studies have focused on flue gases with specific compositions and flow rates, normally corresponding to fossil fuel burning power plants. As shown by Abu-Zahra et al, 16 the cost of CO 2 avoided fluctuates from 41.7 to 75 $/ton CO 2 , depending on the different technical and economic costs because of the various assumptions in each study, but all of them are based on coal or natural gas power plants. Leeson and coauthors 17 carried out the systematic review of the contemporary studies performed regarding industrial carbon capture.…”

One-Step Process Using CO2 for the Preparation of Amino-Functionalized Mesoporous Silica for CO2 Capture Application

“…Besides CO 2 utilization, technological improvement should be considered to reduce the cost of CO 2 capture. Since the major fraction of CO 2 capture cost comes from the high amount of energy consumed by the CO 2 capture unit to regenerate sorbent, advanced sorbents with lower regeneration energy should be developed. , Accordingly, numerous amine solvents and solid sorbents have been examined for CO 2 postcombustion capture in which solid sorbent has emerged as a promising candidate with lower energy consumption due to the avoidance of solvent. , Solid sorbents are porous materials such as activated carbon, zeolite, alumina, metal organic framework, or silica with or without functionalization. , Adsorbents without functionalization capture CO 2 by physical adsorption based on weak interaction between CO 2 and polar sites on their surface, which usually operates at low temperature and high pressure. , Adsorbents having functional groups capture CO 2 by chemical adsorption based on the reaction between CO 2 and surface functional groups, which are usually amino groups. , Functionalized adsorbents are prepared by impregnating or grafting amines onto a porous substrate such as activated carbon, zeolite, and mesoporous silica. − Mesoporous silica is the most popular substrate used for adsorbent preparation because it has a relatively high surface area and high porosity to accommodate amine and high silanol group (Si–OH) density to graft amino groups. Grafting amino groups is usually conducted via siloxane condensation where an aminoalkylalkoxysilane is hydrolyzed and condensed with Si–OH groups on silica substrate to form siloxane bonds (Si–O–Si). − …”

“…Since the major fraction of CO 2 capture cost comes from the high amount of energy consumed by the CO 2 capture unit to regenerate sorbent, advanced sorbents with lower regeneration energy should be developed. 4,17 Accordingly, numerous amine solvents and solid sorbents have been examined for CO 2 postcombustion capture in which solid sorbent has emerged as a promising candidate with lower energy consumption due to the avoidance of solvent. 18,19 Solid sorbents are porous materials such as activated carbon, zeolite, alumina, metal organic framework, or silica with or without functionalization.…”