ABSTRACT
According to the statistics of the Food and Agriculture Organization of the United Nations (UNFAO), about 1/3 of the world's food is wasted and discarded as organic waste every year, resulting in 4.4 GtCO2 eq of carbon emission. If the waste cannot be properly reutilized, the Earth will be polluted, leading to catastrophic damages. In order to reduce pollution to the environment and carbon emission, this study proposes the Black Soldier Fly open-air composting method for treating organic wastes, such as food wastes. To evaluate the efficiency and convenience of the Black Soldier Fly composting, the carbon emission and fertilizer content of this method were estimated based on the experimental data, and the results were compared with those of other methods. The proposed method not only can improve the efficiency of traditional composting, but also can eliminate the difficulty in breading Black Soldier Fly since the purpose is not collecting insect protein. According to the experimental results, the method proposed in this study can be easily operated in farms as well as in communities. Moreover, the method is suitable for converting the problematic food wastes in small batches into organic fertilizer with high fertilizer content.
