대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제36권11호
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  • Pages.791-802
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  • 2014
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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염도차를 이용한 압력지연삼투 공정의 현황과 미래

Pressure Retarded Osmosis Process: Current Status and Future

  • Kim, Jihye (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology) ;
  • Kim, Seung-Hyun (Department of Civil Engineering, Kyungnam University) ;
  • Kim, Joon Ha (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
  • 투고 : 2014.10.26
  • 심사 : 2014.11.19
  • 발행 : 2014.11.30
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⟨ 이전 논문 다음 논문 ⟩

초록

에너지 소비량은 지속적으로 증가하고 있는 반면 사용가능한 부존자원은 한정되어 있어 전 세계적으로 에너지 위기가 심화되고 있다. 화석연료 고갈 및 에너지 생산으로 인한 환경오염 문제를 해소하기 위하여 새로운 방식의 에너지 생산 기술 개발이 요구되고 있으며, 소수력, 지열, 태양열 광, 풍력, 바이오매스 등의 신재생 에너지기술이 이미 개발되었거나 활발히 연구되고 있다. 최근 지구상에 풍부하게 존재하는 해수와 담수를 이용하여 에너지를 생산하는 염도차 발전이 관심을 얻고 있으며, 그 중에 대표적인 공정이 압력지연삼투(Pressure retarded osmosis, PRO)이다. 압력지연삼투는 에너지 생산 시 이산화탄소 배출이 없고 외부 환경요인으로 인한 제약이 적다는 장점이 있으나, 전용막 및 최적화 기술의 부재로 인해 아직 상용화 단계에 이르지 못 하였다. 따라서 본 논문에서는 압력지연삼투 기술의 현황과 한계를 다양한 측면에서 분석해보고, 이를 통해 압력지연삼투의 기술 개발 방향에 대해 논의해보고자 한다.

Energy shortage is being exacerbated due to the increase of energy consumption and depletion of fossil fuels. In order to release the energy crisis, new types of energy resources such as small hydropower, solar power, wind power and biomass have been already developed or actively researched. Recently, osmotic power, which harvests energy from salinity gradient between seawater and fresh water, is considered as a feasible candidate. Among the osmotic power processes, pressure retarded osmosis (PRO) is widely gaining attention because of no emission of carbon dioxide and less sensitivity to the external environmental conditions. However, PRO process is facing difficulties such as the lack of specialized PRO membrane and optimization technologies. Therefore, PRO was reviewed in this paper in terms of theoretical background, membrane development, process development and fouling mechanism to provide insights and suggest the future direction of PRO research.

키워드

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피인용 문헌

  1. Development of SWRO-PRO hybrid process simulation and cost estimation program vol.30, pp.3, 2016, https://doi.org/10.11001/jksww.2016.30.3.299
  2. Assessment of Power Generation by Pressure Retarded Osmosis Process from Spiral-Wound Membrane Pilot-Plant vol.38, pp.9, 2016, https://doi.org/10.4491/KSEE.2016.38.9.476
  3. Modeling and Simulation Studies Analyzing the Pressure-Retarded Osmosis (PRO) and PRO-Hybridized Processes vol.12, pp.2, 2019, https://doi.org/10.3390/en12020243