The carbon capture and storage (CCS) technology from industrial flue-gas has been an important environmental issue in these days. However, membrane process has a number of breakthrough-point to commercialization in scale-up. In this work, process optimization for high purity and high CO2 recovery with lower the capture cost has been investigated. Lab-made membrane pilot process using real flue gas has been also set up to derive industrial factor.

Flat sheet membranes consisting of a selective layer and a porous support usually require gutter layer to reduce the bulk pores of the substrates. The gutter layer mitigates the geometric restrictions of support, which enables selective layer to have defect-free morphology with thin thickness (< 100 nm). For this reason, the gutter layer has been introduced to many industrial membranes, and the systematical studies of the effects of the gutter layer properties on membrane performance should be needed. Herein, we introduced several gutter layers with different thicknesses into graphene oxide intercalated polymer TFC membranes to determine the relationship between gutter layer properties and total membrane performances. This study provides more practical insight to determine the optimum gutter layer properties in designing TFC membranes.

연소 후 생성되는 연소가스 중 CO2는 온실가스 기체중 하나로, CO2를 처리하기 하기 위해 CCS 기술 개발이 세계적으로 주목 받고 있다. 하지만 단일막을 이용한 CO2 포집 공정에서는 약 14%의 CO2를 포함한 연소 배기가스로부터 고 순도, 고회수율을 달성하기란 매우 어렵다. 본 연구에서는 다단막 공정 디자인 및 다양한 운전 변수를 통하여 14%의 CO2를 가지고 있는 혼합모사가스로부터 순도 73% 회수율 74%의 포집 효율을 얻을 수 있었다.