Hollow Fiber Membrane Contactor Based CO2 Absorption−Stripping Using Novel Solvents and Membranes

Autor:	and A. Korikov, A. S. Kovvali, Kamalesh K. Sirkar, Praveen B. Kosaraju
Rok vydání:	2004
Předmět:	Polypropylene Chromatography Aqueous solution General Chemical Engineering General Chemistry Stripping (fiber) Industrial and Manufacturing Engineering chemistry.chemical_compound Membrane chemistry Chemical engineering Hollow fiber membrane Fiber Wetting Data scrubbing
Zdroj:	Industrial & Engineering Chemistry Research. 44:1250-1258
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie0495630
Popis:	Nondispersive absorption of CO2 into an aqueous solution of a volatile amine and its subsequent regeneration by stripping in porous hydrophobic hollow fiber devices have encountered a number of issues: membrane pore wetting reducing CO2 transfer rates; loss of volatile absorbents. These issues have been addressed here using novel nonvolatile absorbents and novel hollow fiber membranes. Continuous CO2 absorption−stripping was carried out for 55 days using a novel absorbent, polyamidoamine (PAMAM) dendrimer of generation 0, in an aqueous solution using conventional Celgard polypropylene (PP) hollow fibers in an absorber followed by a stripper to successfully resolve the issue of pore wetting. This nonvolatile amine PAMAM provides a novel dimension to CO2 scrubbing using conventional porous PP membrane contactors. Elimination of pore wetting and reduction of loss of the volatile monoethanolamine (MEA) from an aqueous solution was studied for an extended period of more than 55 days using an absorber and a st...
Databáze:	OpenAIRE
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