Reduction of Environmental Loads by means of Recycling Organic Waste from Food Industries

Abstract

This paper aims to evaluate a reduction of environmental loads (CO₂) and energy consumption by means of recycling organic by-products from food industries. In past, organic wastes from food industries was recycled as fertilizer or feed of livestock. But, now the link between the materials and energy used in each sector e. g. manufacturing and commerce, agriculture and forestry, and consumers, has been destroyed and most organic wastes has been incinerated. It is necessary nowadays to reconstruct the recycle network of organic wastes.
Firstly, the characteristics and the mount of organic wastes e. g. bean-curd refuse, soy sauce cake and crumbs of bread, from food industries is investigated. Secondly, the energy consumption by burning and by feeding the bean-curd refuse, soy sauce cake and crumbs of bread is calculated, respectively. The reduction of environmental loads (CO₂ emission) through recycling three organic wastes is calculated as 61.96, 60.16 and 79.08kgC/t, respectively. Finally, simulation has been made on how long distance the wastes can be transported in terms of some economic conditions.