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Received July 28, 2018
Accepted August 31, 2018
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유기인산계 추출제를 이용한 에멀젼형 액막법에 의해 푸란유도체를 함유하는 모사 바이오매스 가수분해액으로부터 초산의 분리
Separation of Acetic Acid from Simulated Biomass Hydrolysates Containing Furans by Emulsion Liquid Membranes with an Organophosphorous Extractant
군산대학교 나노화학공학과, 54150 전라북도 군산시 대학로 558
Department of Chemical Engineering, Kunsan National University, 558, Daehak-ro, Gunsan-si, Jeollabuk-do, 54150, Korea
lee40f@kunsan.ac.kr
Korean Chemical Engineering Research, October 2018, 56(5), 687-693(7), 10.9713/kcer.2018.56.5.687 Epub 5 October 2018
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Abstract
바이오매스 가수분해액으로부터 당을 정제하는 동안 발효 저해물질들의 선택적인 제거 및 회수는 목질계 바이오매스로부터 바이오 알코올을 생성하는 전체 공정의 경제적 효율성을 높일 수 있다. 이 연구에서는 에멀젼형 액막계에서 페놀화합물이 없는 모사 바이오매스 가수분해액에 있는 푸란유도체가 초산 추출에 미치는 영향이 조사되었다. 특별한 조작 조건하에서 5분내에 99%이상의 초산을 추출할 수 있었으며, 이 때 푸르푸랄과 5-hydroxymethylfurfural의 추출율은 각각 10%와 4% 내외의 값을 가졌다. 또한, 원료상에 있는 푸란유도체들의 초기 농도가 높을수록 초산의 추출속도는 낮았는데, 푸르푸랄이 5-hydroxymethylfurfural 보다 그 영향이 더 컸다. 따라서, 초산 추출 전에 가수분해액으로부터 푸르푸랄을 우선적으로 제거한다면 에멀젼형 액막법이 보다 경제성이 있는 초산 제거법이 될 것으로 보인다.
The selective removal and recovery of fermentation inhibitors during purification of sugars from biomass hydrolysates can increase the economic efficiency of the entire process to produce bioalcohol from lignocellulosic biomass. This study investigated the effect of furans in phenols-free biomass hydrolysate on acetic acid extraction in an emulsion liquid membrane system. Under specific operating conditions, more than 99% of acetic acid could be extracted within 5 minutes, and the degrees of extraction of furfural and 5-hydroxymethylfurfural were about 10% and 4%, respectively. The extraction rate of acetic acid was also lower at a higher initial concentration of furfural in the feed phase, which was greater for furfural than 5-hydroxymethylfurfural. Thus, if furfural is first removed from the hydrolysate prior to acetic acid extraction, emulsion liquid membrane would be a more economically efficient way of removing acetic acid.
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