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염기성 수용액을 통한 이산화탄소의 촉진전달

Facilitated Transport of Carbon Dioxide Through Alkaline Solutions

HWAHAK KONGHAK, October 1982, 20(5), 365-376(12), NONE
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Abstract

촉진전달의 mechanism을 설명하기 위하여 sodium-bicarbonate의 수용액 및 sodium-bicarbonate와 sodium-arsenite가 섞인 수용액에 대하여 실험을 하였다. 실험 결과 이산화탄소의 투과는 sodium-bicarbonate와 sodium-arsenite의 존재에 의하여 촉진되는 것이 확인되었다. 이산화탄소의 수화반응의 촉매로 알려져 있는 sodium-arsenite는 예상한대로 촉진전달에 중요한 역할을 하고 있음을 보여준다. 실험에 사용한 액막은 아는 농도의 sodium-arsenite의 수용액 및 sodium-bicarbonate와 sodium-arsenite가 섞인 수용액에 Millipore filter를 적시어 만들었다. 비선형 기본방정식을 근사적으로 풀기 위해 경계층 근사법(boundary layer approximation)을 사용하였으며, 근사해는 낮은 농도의 sodium-bicarbonate농도 영역을 제외한 전 영역에서 실험 결과와 잘 맞고 있다.
A set of experiments was carried out for the aqueous solution of sodium bicarbonate, and also for that of both sodium bicarbonate and sodium arsenite to explain the mechanism of facilitated transport. It was confirmed that the permeation of carbon dioxide is facilitated by the presence of sodium bicarbonate and sodium arsenite. Sodium arsenite, which is well known as a catalyst for the hydration of carbon dioxide, plays a significant role in the facilitation as expected. The liquid membranes used in the experiment were made by soaking the Millipore filters in the solutions of sodium bicarbonate and/or sodium arsenite with known-concentration. A boundary layer approximation has been used to solve the nonlinear governing equations, and the results are in fairly good agreement with experimental data in the most range of sodium bicarbonate concentation except its low concentration.

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