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논문 기본 정보

자료유형
학술저널
저자정보
장은석 (고등기술연구원연구조합) 김대기 (대구대학교)
저널정보
한국폐기물자원순환학회 한국폐기물자원순환학회지 한국폐기물자원순환학회지 제38권 제5호
발행연도
2021.10
수록면
405 - 411 (7page)
DOI
https://doi.org/10.9786/kswm.2021.38.5.405

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In this study, livestock manure was converted into fuel using hydrothermal carbonization, and the chemical composition of the resulting fuel was investigated. The results revealed that the hydrogen and oxygen content of the resulting fuel decreased, whereas the carbon content increased. In addition, there was a reduction in nitrogen content, which could be attributed to the gradual reduction in potential NOx emission, and the decomposition of organic nitrogen under thermal reaction conditions to liquid and gas. Furthermore, the hydrothermal carbonization removed some of the volatile matter in the manure and increased the proportion of fixed carbon content; thus, resulting in an increase in fuel ratio from 0.32 to 0.68 with an increase in the reaction temperature. These results indicated that the calorific value increased after hydrothermal carbonization. However, at hydrothermal carbonization temperatures above 250 o C, the formed products exhibited a high ash content of 36.07? 41.54%, which had no effect on the increase in the calorific value. The storage and stability of the biomass fuel was investigated using a moisture reabsorption experiment. There was a sharp decrease in the moisture reabsorption value of the fuel, and only 75% of the raw reabsorption value was retained. This could be attributed to the removal of hydrophilic groups, such as OH (hydroxyl group) and C=O (carboxyl group), from the manure by the hydrothermal carbonization process.

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