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DOI : 10.17640/KSWST.2022.30.2.3 , Vol.30, No.2, 3 ~ 11, 2022
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| Title |
| Dewatering Characteristics of Food Waste Biochar through Centrifugation |
| 안광호 Kwang-ho Ahn , 이예은 Ye-eun Lee , 신동철 Dong-chul Shin , 정진홍 Jinhong Jung , 정윤아 Yoonah Jeong , 김이태 I-tae Kim |
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| Abstract |
| Various methods of technology for using food waste as energy have been developed, but their utility as fuel is low due to the salt concentration contained in food waste. As of 2019, the daily amount of domestic food waste is approximately 14,000 tons, and as the amount of food waste increases, it is necessary to develop technology for processing a large amount of food. Bio-char made from food waste can be a good fuel with high calorific value if salt is removed. In this study, a centrifugal separator was used to remove chloride ions from bio-char, and as a result of the experiment, the higher heating value(HHV) was improved through centrifugation. Food waste bio-char showed higher calorific value as the particle size was smaller, and higher calorific value was improved by 15~25% after centrifugation than before centrifugation. As for the chlorine component removal efficiency before and after centrifugation, the smaller the particle size, the higher the chloride ion removal efficiency. After centrifugation, the moisture of bio-char was 21.7~30.4%, and the ultimate analyzes of bio-char were found the most in the order of carbon, oxygen, hydrogen, and nitrogen, and no sulfur component was detected. As a result of water quality analysis, the dewatering water after centrifugation showed the degree of contamination of sewage was shown. |
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| Key Words |
| Food waste, bio-char, centrifugation, higher heating value, chloride ion concentration, 음식물쓰레기, 바이오차, 원심분리, 고위발열량, 염소이온농도 |
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