Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 34 Issue 1
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- Pages.17-25
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- 2001
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Study on the Lowering of NaCl Content by Co-composting Food Wastes
저농도 식염을 함유하는 음식물쓰레기 퇴비제조
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Lee, In-Bog
(Dept. of Hort. Environ., Nat'l Horticultural Research Institute, RDA) ;
- Park, Chang-Kyu (Kyonggi-do Provincial Research and Extension Service) ;
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Kim, Pil-Joo
(Dept. of Agric. Chem., Kyongsang Nat'l University)
- Published : 2001.02.28
Abstract
High salt content in food waste limit use as the potential source of compost. Since sodium chloride content should be lower than one percent to meet requirement for agricultural use of compost, we attempted use of three kinds of co-composting material for food wastes compost, which were fermented, dried, and fresh types of amendments which included pig manure, sawdust and puffed rice hull. Food wastes were composted well and stabilized after around the 40th days of composting. Little difference were found between composts amended sawdust and puffed rice hull. The result indicated that puffed rice hull could be used as a good alternative of sawdust. Because sawdust or puffed rice hull were mixed as amendments to control water contents and to dilute high NaCl content of compost material, the C/N ratios of the final products were significantly high over 40. However, NaCl contents of final products were dropped to less than percent on the fresh weight basis by mixing food wastes and the above amendments with the optimum rates.
음식물쓰레기중 다량 함유된 식염은 음식물쓰레기 퇴비의 농업적 이용을 저해하는 가장 큰 요인으로 알려져 있으며, 본 연구는 농업적으로 안전하게 사용할 수 있는 음식물쓰레기 퇴비제조를 위하여 식염 함량이 낮은 부재료로 희석하는 방안을 시험하였다. 시험재료로 사용된 건조음식물쓰레기, 발표음식물쓰레기, 생음식물쓰레기는 생돈분, 톱밥, 왕겨 등과 혼합하여