Department of Environmental Planning, Graduate School of Environmental Studies, Seoul National University, San 56-1, Sillim-Dong, Gwanak-Gu, Seoul 151-742, Republic of Korea.
Sci Total Environ. 2010 Sep 1;408(19):3998-4006. doi: 10.1016/j.scitotenv.2010.04.049. Epub 2010 May 23.
This study evaluated feed manufacturing including dry feeding and wet feeding, composting, and landfilling for food waste disposal options from the perspective of global warming and resource recovery. The method of the expanded system boundaries was employed in order to compare different by-products. The whole stages of disposal involved in the systems such as separate discharge, collection, transportation, treatment, and final disposal, were included in the system boundary and evaluated. The Global Warming Potential generated from 1tonne of food wastes for each disposal system was analyzed by the life cycle assessment method. The results showed that 200kg of CO(2)-eq could be produced from dry feeding process, 61kg of CO(2)-eq from wet feeding process, 123kg of CO(2)-eq from composting process, and 1010kg of CO(2)-eq from landfilling. Feed manufacturing and composting, the common treatment methods currently employed, have been known to be environment friendlier than other methods. However, this study shows that they can negatively affect the environment if their by-products are not appropriately utilized as intended.
本研究从全球变暖与资源回收的角度评估了食物垃圾处理选项中的饲料制造（包括干饲料和湿饲料）、堆肥和填埋。采用扩展系统边界的方法来比较不同的副产品。将系统中涉及的废物单独排放、收集、运输、处理和最终处置等各个阶段都包含在系统边界内进行评估。通过生命周期评估方法分析了每个处理系统 1 吨食物垃圾产生的全球变暖潜势。结果表明，干饲料处理过程会产生 200 公斤 CO(2)-eq，湿饲料处理过程会产生 61 公斤 CO(2)-eq，堆肥处理过程会产生 123 公斤 CO(2)-eq，而填埋处理过程会产生 1010 公斤 CO(2)-eq。目前常用的饲料制造和堆肥等常见处理方法被认为比其他方法更环保。然而，本研究表明，如果其副产品没有按预期得到适当利用，它们也可能对环境产生负面影响。
