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Effect of Saline Soil and Crop Growth with Bottom Ash from Biomass Power Plant Based Wood Pellet

우드펠릿 기반 바이오매스 발전소로부터 배출된 저회를 활용한 염류토양 및 작물성장에 미치는 영향

  • So-Hui Kim (Department of Agricultural Chemistry & Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University) ;
  • Seung-Gyu Lee (Department of Agricultural Chemistry & Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University) ;
  • Jin-Ju Yun (Department of Agricultural Chemistry & Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University) ;
  • Jae-Hyuk Park (Department of Agricultural Chemistry & Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University) ;
  • Se-Won Kang (Department of Agricultural Chemistry & Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University) ;
  • Ju-Sik Cho (Department of Agricultural Chemistry & Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University)
  • 김소희 (순천대학교 일반대학원 농화학과 & IT-Bio융합시스템전공) ;
  • 이승규 (순천대학교 일반대학원 농화학과 & IT-Bio융합시스템전공) ;
  • 윤진주 (순천대학교 일반대학원 농화학과 & IT-Bio융합시스템전공) ;
  • 박재혁 (순천대학교 일반대학원 농화학과 & IT-Bio융합시스템전공) ;
  • 강세원 (순천대학교 생명산업과학대학 농생명과학과) ;
  • 조주식 (순천대학교 일반대학원 농화학과 & IT-Bio융합시스템전공)
  • Received : 2022.12.04
  • Accepted : 2022.12.19
  • Published : 2022.12.31

Abstract

BACKGROUND: The salt in soil interrupts crop growth. Therefore, water resources are used to remove any salt found in the soil. However, water resources have been reduced by global warming; thus, a new study is required into reducing the salt in soil. Recently, the bottom ash (BA) of a biomass power plant was found to be similar to biochar. Hence, it can be used to remove heavy metals and wastewater through the adsorption characteristics of BA. The objective of this study was to evaluate the improvement effects on crop growth in saline soil containing the BA from biomass power plants. METHODS AND RESULTS: The effect on crop growth in the saline soil supplemented with BA was studied with the crop-planted pots, which were packed by reclaimed greenhouse soils collected from Byolyang, Suncheon. The BA application level was 25, 50, 100, 200, and 400 kg/10a (referred as BA25, BA50, BA100, BA200, and BA400, respectively). The BA increased the fresh weights of the leaf and root, while nitrogen uptake increased by approximately 24-102% and 54-77%, respectively for the lead and root. The phosphorous uptake increased by 38%, although only in the leaf of the lettuce. In the case of soil, BA increased water content, pH, EC, CEC, and NH4+ and the SAR of the soil decreased by 5-15%. The bottom ash increased the contents of Ca2+ and Mg2+, and fixed the amount of Na+. CONCLUSION(S): It was confirmed the bottom ash of a biomass power plant, based on wood pellets, improved crop growth, and increased the nutrient uptake of crops in saline soil. In addition, bottom ash, which has a wide range of porosity and high values of pH and EC, improved properties of the saline soil. However, the BA has a large amount of B, As, and heavy metals. Finally, it may require a study on the safety and contamination of heavy metals contained in the bottom ash, which would be applied in soil for a long time.

Keywords

Acknowledgement

This work was carried out with the support of the 'Field Technology Research Project through the Korea South-East Power Co., Ltd. (KOEN).

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