title: CO2Capture in the Sustainable Wheat-Derived Activated Microporous Carbon Compartments.
abstract: Microporous carbon compartments (MCCs) were developed via controlled carbonization of wheat flour producing large cavities that allow CO2gas molecules to access micropores and adsorb effectively. KOH activation of MCCs was conducted at 700 °C with varying mass ratios of KOH/C ranging from 1 to 5, and the effects of activation conditions on the prepared carbon materials in terms of the characteristics and behavior of CO2adsorption were investigated. Textural properties, such as specific surface area and total pore volume, linearly increased with the KOH/C ratio, attributed to the development of pores and enlargement of pores within carbon. The highest CO2adsorption capacities of 5.70 mol kg-1at 0 °C and 3.48 mol kg-1at 25 °C were obtained for MCC activated with a KOH/C ratio of 3 (MCC-K3). In addition, CO2adsorption uptake was significantly dependent on the volume of narrow micropores with a pore size of less than 0.8 nm rather than the volume of larger pores or surface area. MCC-K3 also exhibited excellent cyclic stability, facile regeneration, and rapid adsorption kinetics. As compared to the pseudo-first-order model, the pseudo-second-order kinetic model described the experimental adsorption data methodically.
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea.
authors.forename: Seok-Min
authors.initials: SM
authors.lastname: Hong
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea.
authors.forename: Eunji
authors.initials: E
authors.lastname: Jang
authors.affiliation: School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907-2100, United States.
authors.forename: Arthur D
authors.initials: AD
authors.lastname: Dysart
authors.affiliation: School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907-2100, United States.
authors.forename: Vilas G
authors.initials: VG
authors.lastname: Pol
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea.
authors.forename: Ki Bong
authors.initials: KB
authors.lastname: Lee