아가로스 가수분해 생성물의 연속적 분리를 위한 고성능, 고효율 SMB 공정의 개발

Abstract

The economically-efficient separation of galactose, levulinic acid (LA), and 5-hydroxymethylfurfural (5-HMF) in acid hydrolyzate of agarose has been a key issue in the area of biofuel production from marine biomass. To address this issue, an optimal simulated moving bed (SMB) process for continuous separation of the three agarose-hydrolyzate components with high purities, high yields, and high throughput was developed in this study. As a first step for this task, the adsorption isotherm and mass-transfer parameters of each component on the qualified adsorbent were determined through a series of multiple frontal experiments. The determined parameters were then used in optimizing the SMB process for the considered separation. Finally, the optimized SMB process was tested experimentally using a self-assembled SMB unit with four zones. The SMB experimental results and the relevant computer simulations verified that the developed process in this study was quite successful in the economically-efficient separation of galactose, LA, and 5-HMF in a continuous mode with high purities and high yields. It is thus expected that the developed SMB process in this study will be able to serve as one of the trustworthy ways of improving the economic feasibility of biofuel production from marine biomass

|해양바이오매스로부터 아가로스의 가수분해 생성물을 효율적으로 분리하여 바이오연료를 생산하는 분야에서 지속적인 연구가 시행되고 있다. 본 연구에서는 아가로스의 가수분해 생성물인 galactose, LA 그리고 5-HMF를 고순도, 고수율 그리고 높은 처리량을 가진 연속적 분리공정을 개발하였다. 먼저 일반적인 pulse실험을 통해 적합한 흡착제를 선정하였고, multiple frontal 실험을 통해 적합한 흡착제에 맞는 각각의 성분들의 adsorption isotherm과 mass-transfer parameter를 설정하였다. 이러한 parameter들은 SMB공정을 최적화 하는데 필요한 요소이다. 마지막으로 최적화된 SMB 공정은 lab-scale에서 직접 조립한 4-zone SMB 장치를 이용하여 실험을 하였다. SMB의 실험과 적절한 컴퓨터 simulations을 비교 확인한 결과 galctose, LA 그리고 5-HMF를 고순도, 고수율을 가진 연속적 분리공정 개발을 성공하였다. 본 연구에서처럼 SMB공정은 해양바이오매스로부터 바이오연료 생산을 가능하게 하는 방법 중 하나로써 종래기술보다 공정비용이 저렴하여 경제적 측면에서 선호되는 공정이라 기대된다.; The economically-efficient separation of galactose, levulinic acid (LA), and 5-hydroxymethylfurfural (5-HMF) in acid hydrolyzate of agarose has been a key issue in the area of biofuel production from marine biomass. To address this issue, an optimal simulated moving bed (SMB) process for continuous separation of the three agarose-hydrolyzate components with high purities, high yields, and high throughput was developed in this study. As a first step for this task, the adsorption isotherm and mass-transfer parameters of each component on the qualified adsorbent were determined through a series of multiple frontal experiments. The determined parameters were then used in optimizing the SMB process for the considered separation. Finally, the optimized SMB process was tested experimentally using a self-assembled SMB unit with four zones. The SMB experimental results and the relevant computer simulations verified that the developed process in this study was quite successful in the economically-efficient separation of galactose, LA, and 5-HMF in a continuous mode with high purities and high yields. It is thus expected that the developed SMB process in this study will be able to serve as one of the trustworthy ways of improving the economic feasibility of biofuel production from marine biomass