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화력발전소 포집 CO2를 이용한 시설 엽채류 시비효과 평가

Assessment of CO2 Fertilization Captured in Thermoelectric Power Plant on Leafy Vegetables Grown in Greenhouse

  • 정현우 (경상국립대학교 대학원 응용생명과학부) ;
  • 황희성 (경상국립대학교 대학원 작물생산과학부) ;
  • 박정 (경상국립대학교 농업생명과학대학 원예과학부) ;
  • 윤성주 (경상국립대학교 농업생명과학대학 원예과학부) ;
  • 황승재 (경상국립대학교 농업생명과학대학 원예과학부)
  • Jeong, Hyeon Woo (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Hwang, Hee Sung (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • Park, Jeong (Division of Horticultural Science, College of Agriculture & Life Science, Gyeongsang National University) ;
  • Yoon, Seong Ju (Division of Horticultural Science, College of Agriculture & Life Science, Gyeongsang National University) ;
  • Hwang, Seung Jae (Division of Horticultural Science, College of Agriculture & Life Science, Gyeongsang National University)
  • 투고 : 2022.09.30
  • 심사 : 2022.10.20
  • 발행 : 2022.10.31

초록

'탄소중립'에 대한 관심이 높아짐에 따라 CO2를 농업적으로 이용하기 위한 시도가 증가하고 있다. 본 실험은 발전소에서 부산물로 배출되는 CO2를 포집하여 액화·정제 후 시설 엽채류의 생육 및 생산성 증대를 위한 시비용 CO2로의 활용 가능성을 평가하기 위해 수행되었다. 경상남도 하동지역의 부추, 취나물, 미나리 농장에 드라이아이스가 공급되었고 각 농장의 온실 중 하나의 온실은 대조군, 하나의 온실은 CO2 처리구로 사용되었다. CO2의 시비는 자체 제작한 장치를 사용하여 드라이아이스에서 승화된 가스를 온실에 공급했다. 부추 온실은 대조군과 CO2 처리에서 온실 내 CO2 농도의 차이가 없었고 두 온실 모두 높은 CO2 농도를 보였다. 반면에 취나물과 미나리 온실에서는 CO2 시비 처리에서 높은 CO2 농도가 측정되었다. 취나물 및 미나리의 생육은 CO2 시비 처리구에서 유의성 있게 증가하였으며 수확량도 각각 36%와 25%로 증가하였다. 경제성 분석 결과, 취나물 농가에서는 소득률이 증가하였지만, 부추와 미나리 농가는 감소하는 것으로 나타났다. 따라서 화력발전소에서 부산물로 발생한 드라이아이스의 이용은 시설 엽채류의 생산성을 높일 수 있었다.

Due to increase of interest in 'carbon neutrality', attempts at agricultural use of CO2 are increasing. In this study, we used the dry-ice made by CO2 as by-product in thermoelectric power plant on CO2 fertilization for production of leafy vegetable in greenhouses. The dry-ice was supplied on three leafy vegetable farms (Allium tuberosum Rottl. ex Spreng, Aster scaber, and Oenanthe stolonifera DC.) located in Hadong, Gyeongsangnamdo. Two greenhouses were used in each leaf vegetable crops, one greenhouse used as the control (non-treatment), other greenhouse used as supplied CO2. For CO2 fertilization, a gas sublimated from dry ice was supplied to the greenhouse using a specially designed prototype supply machine. A. tuberosum greenhouse has no difference of CO2 concentration between the control, and CO2 fertilization and shown high CO2 concentration both greenhouses. However, the CO2 concentrations in A. scaber and O. stolonifera greenhouses were increased in CO2 fertilization treatment. The growth of A. scaber and O. stolonifera were increased in CO2 fertilization, and the yield also increased to 36% and 25% than the control, respectively. As a result of economic analysis, the A. scaber has increase of income rate, however A. tuberosum and O. stolonifera has decreased income rate. Thus, the use of the dry-ice made by CO2 as by-product in thermoelectric power plant has possibility to increase productivity of the leafy vegetable in greenhouse and have agricultural use value.

키워드

참고문헌

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