Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Current Status and Prospect of Seaweed-based Biofuels as Renewable Energy Resource

재생가능 에너지원으로서의 해조류 유래 바이오 연료의 현황과 전망

  • Liu, Jay (Department of Chemical Engineering, Pukyong National University)
  • 유준 (부경대학교 화학공학과)
  • Received : 2022.04.14
  • Accepted : 2022.04.29
  • Published : 2022.06.30
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Abstract

Research and development of biofuels as one of the means to mitigate global warming and to avoid fossil fuel depletion has occurred for more than 30 years. However, there has only been limited distribution of a few first- and second-generation biofuels, and widespread supply and consumption of biofuels is still far from a reality. Although a relatively recently studied third-generation biofuel derived from seaweed biomass has been shown to have many advantages, it is yet to be deployed in commercial-scale seaweed biorefineries. This review paper examines the advantages and disadvantages of seaweed biorefineries for the entire value chain covering from seaweed and its cultivation to biofuel production based on an extensive literature search and the author's experience of conducting feasibility studies pertaining to seaweed biorefineries for over 10 years. For this purpose, the literature survey will cover the current status of seaweed production and its research and development worldwide, conversion technologies for biofuel production from seaweed based on bench-scale experiments, and large-scale techno-economic feasibility studies for seaweed conversion to biofuels and bioenergy. In addition, the main problems expected with the commercialization of seaweed-based biofuels will be identified. Finally, the current status of seaweed biorefinery technology and the author's views on its promising future will be summarized.

지구 온난화를 완화시키고 석유고갈 문제를 피할 수 있는 수단의 하나로서 바이오 연료에 대한 많은 연구 개발이 지금까지 30년 넘게 이루어졌다. 하지만 일부 1세대 및 2세대 바이오 연료의 제한적인 보급이 이루어졌을 뿐, 광범위한 바이오 연료의 보급은 아직도 요원하다. 비교적 최근에 연구가 시작된 해조류 바이오매스 유래 3세대 바이오는 경우 많은 장점을 가지고 있음에도 불구하고 상업 규모의 해조류 바이오 리파이너리의 보급은 아직도 멀기만 하다. 이 총설에서는 광범위한 문헌조사와 10년 넘게 해조류 바이오 리파이너리의 타당성 연구를 수행한 저자의 경험을 토대로 해조류와 해조류의 양식부터 최종 제품인 바이오 연료 생산까지 가치사슬 전반에 걸쳐 해조류 바이오 리파이너리가 가진 장점과 단점을 살펴보고자 한다. 이 관점에서 문헌조사는 (1) 전 세계 해조류 생산 및 연구 개발 현황, (2) 실험실 규모 실험에 기초한 해조류로부터 바이오 연료 생산을 위한 전환 기술, 그리고 (3) 대규모 해조류 바이오 리파이너리 타당성 연구를 포함할 것이다. 그리고 해조류 바이오 연료 상업화에 예상되는 주요 문제점을 확인하고 마지막으로 현재의 해조류 바이오 리파이너리 기술 현황과 유망한 미래 전망에 대한 저자의 견해가 정리될 것이다.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의 학술연구비(2021년)에 의해 연구되었음.

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