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Analysis of Citric Acid Recovery Technology for Recycling of Citric Acid from Waste Solution

구연산(Citric Acid)폐액 재활용을 위한 구연산 회수 기술 분석

  • Jaewoo Ahn (Department of Advanced Materials Sci. & Eng., Daejin University) ;
  • Minhyuk Seo (Department of Advanced Materials Sci. & Eng., Daejin University) ;
  • Youngjae Lee (Department of Advanced Materials Sci. & Eng., Daejin University)
  • 안재우 (대진대학교 신소재공학과) ;
  • 서민혁 (대진대학교 신소재공학과) ;
  • 이영재 (대진대학교 신소재공학과)
  • Received : 2024.09.05
  • Accepted : 2024.09.23
  • Published : 2024.10.31

Abstract

Citric acid is an organic acid used in various industries, and its demand is steadily increasing. Citric acid is primarily obtained via recovery processes, such as the separation and purification of the fermentation broth obtained from microbial fermentation. Various technologies have been developed for the recovery processes, such as solvent extraction, ion exchange resins, and electromembrane separation, with a primary focus on precipitation methods. This study examines citric acid recovery technologies that are both commercially available and are being developed and suggests directions for the development of more efficient and eco-friendly recovery technologies, particularly for recycling waste citric acid solutions.

구연산은 다양한 산업에 응용되고 있고 수요가 꾸준히 증가하고 있는 유기산의 일종이다. 구연산의 경우는 주로 미생물 발효과정을 통해 생성된 발효액에서 분리·정제 등의 회수 공정을 거쳐 생산을 하고 있다. 회수 공정은 그동안 주로 침전 기술을 위주로 하여 용매추출 및 이온교환수지, 전기막 분리 기술 등 다양한 기술들이 꾸준히 개발되어 왔다. 본 연구에서는 현재 상용화된 기술 또는 개발되고 있는 구연산의 회수 기술들을 분석해 보고 향후 구연산 폐액 등의 재활용 공정에 적용하기 위하여 보다 효율적이고 친환경적인 구연산 회수기술 개발의 방향을 제시하고자 하였다.

Keywords

Acknowledgement

본 연구는 2024년도 산업통상자원부의 재원으로 한국산업기술평가관리원(KEIT)의 지원을 받아 수행한 연구과제(소재부품기술개발사업 No. 20018884)이며, 이에 감사드립니다.

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