CO2 Capture and Storage

Adsorbent Materials for Carbon Dioxide Capture from Large Anthropogenic Point Sources

“…[19] It is noted that there are many previous works that offer useful, critical assessments of the current state of practical CO 2 capture methodologies, in some cases with economic analysis of their prospective implementation. [2,3,4,[18][19][20][21][22][23] For existing pulverized-coal plants, postcombustion CO 2 capture technologies are required, whereby CO 2 is removed from the typically dilute (< 15 % by volume) flue gas. Moving away from existing infrastructure, several alternative power plant designs that may allow for more efficient CO 2 capture have been proposed.…”

“…Moving away from existing infrastructure, several alternative power plant designs that may allow for more efficient CO 2 capture have been proposed. [2,3,4,19,22,24] In precombustion capture, the fuel is gasified with steam, air, or O 2 to produce synthesis gas (syngas; H 2 and CO). Additional H 2 is produced by sending the syngas to a shift reactor, whereby much of the CO is oxidized to CO 2 , with H 2 O being reduced to H 2 .…”

Synthesis–Structure–Property Relationships for Hyperbranched Aminosilica CO2 Adsorbents

“…Numerous alternative fossilfuel-based power generation schemes that include CO 2 capture have been proposed, such as integrated gasification combined cycle (IGCC), oxycombustion, chemical looping, and membrane-aided solid oxide fuel cell (SOFC) schemes. [3][4][5] Post-combustion capture technologies, such as absorption with liquid amines or adsorption with solid adsorbents, have been proposed as possible retrofits to existing PC plants that are integral to modern power generation infrastructure. Liquid absorption technologies are mostly based on the chemical fixation of CO 2 with aqueous solutions of amines.…”

“…[6][7][8][9][10] However, these liquid amine-based absorption technologies are very energy intensive and are widely viewed to be potentially cost prohibitive, although several commercial technologies exist. [3] As alternatives, several classes of solid CO 2 adsorbents have been investigated, and each class has its own advantages and disadvantages. [11] Zeolites and activated carbons capture CO 2 via physical adsorption, and consequently are typically hindered in the presence of water.…”

Reaction kinetics of CO2 in aqueous methyldiethanolamine solutions using the stopped-flow technique

“…However, the application of amine based technologies for separation of CO 2 from flue gases is faced with a number of technical challenges. The major disadvantage of this method is its high energy requirements associated with the regeneration of the solvent, thereby affecting the reduction of the energy efficiency by about 9-11 absolute percentage points, depending on the solvent used (Figueroa et al, 2008;Notz et al, 2011;Steeneveldt et al, 2006). The solvents that have been proven to be of principal commercial interest are primary amines: monoethanolamine (MEA) and giglycolamine (DGA), the secondary amines: diethanolamine (DEA) and diisopropanolamine (DIPA) and the tertiary amines: methyldiethanolamine (MDEA) and triethanolamine (TEA) (Kohl and Riesenfeld, 1997;Vaidya and Kenig, 2007).…”