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Tytuł pozycji:

Effect of Carbonic Anhydrase on CO 2 Separation Performance of Thin Poly(amidoamine) Dendrimer/Poly(ethylene glycol) Hybrid Membranes.

Tytuł :
Effect of Carbonic Anhydrase on CO 2 Separation Performance of Thin Poly(amidoamine) Dendrimer/Poly(ethylene glycol) Hybrid Membranes.
Autorzy :
Duan S; Research Institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawadai, Kizugawa-shi, Kyoto 619-0292, Japan.
Kai T; Research Institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawadai, Kizugawa-shi, Kyoto 619-0292, Japan.
Nakao SI; Research Institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawadai, Kizugawa-shi, Kyoto 619-0292, Japan.
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Źródło :
Membranes [Membranes (Basel)] 2019 Dec 05; Vol. 9 (12). Date of Electronic Publication: 2019 Dec 05.
Typ publikacji :
Journal Article
Język :
English
Imprint Name(s) :
Original Publication: Basel, Switzerland : MDPI Publishing
References :
Angew Chem Int Ed Engl. 2010 Aug 16;49(35):6058-82. (PMID: 20652916)
Membranes (Basel). 2014 Apr 08;4(2):200-9. (PMID: 24957172)
Contributed Indexing :
Keywords: CO2 separation; carbonic anhydrase (CA); membrane thickness; poly(amidoamine) dendrimer; rate-limiting step
Entry Date(s) :
Date Created: 20191211 Latest Revision: 20200928
Update Code :
20220301
PubMed Central ID :
PMC6950495
DOI :
10.3390/membranes9120167
PMID :
31817466
Czasopismo naukowe
The effect of carbonic anhydrase (CA) on the separation performance of thin poly(amidoamine) (PAMAM) dendrimer/poly(ethylene glycol) (PEG) hybrid membranes was investigated. CA, a type of enzyme, was used to promote CO 2 hydration and dehydration reactions and to assess whether these reactions were the rate-limiting step in CO 2 permeation through the membrane. The relationship between the membrane thickness and the CO 2 permeance was evaluated in CO 2 /H 2 or CO 2 /He separation using PAMAM/PEG hybrid membranes (thickness: 10-100 μm) with and without CA. Without CA, the CO 2 permeance of PAMAM/PEG hybrid membranes was not inversely proportional to the membrane thickness. On the other hand, with CA, the CO 2 permeance was inversely proportional to the membrane thickness. It was implied that, without CA, the rate-limiting step of CO 2 transport was either the CO 2 hydration reaction at the feed side or the CO 2 dehydration reaction at the permeate side. On the other hand, with CA addition, the rate-limiting step of CO 2 transport was diffusion, and CO 2 permeance could be increased without sacrificing the selectivity by reducing membrane thickness. The effect of the position of CA (i.e., on the surface and/or reverse surface) on CO 2 separation performance was investigated to evaluate which reaction was the rate-limiting step of CO 2 permeation through the membrane. It was suggested that the rate-limiting step of CO 2 permeation was CO 2 dehydration reaction at the permeate side.
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