廃プラスチックのごみ発電燃料としての利用可能性調査(<特集>エネルギー利用の観点からみた廃プラスチックのあるべき姿)

概要

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In Japan, citizens in almost every cities and towns are requested to separate metallic cans, glass bottles and PET bottles for material recovery since the Recycling Law for Containers and Packages has been enforced. Other plastic wastes are also collected for material recovery in most cities, even though separation method is still under discussion whether it should be conducted as material recovery type or energy recovery type. When establishing a new incineration facility, we need to consider of changing the separate collection for material recovery to mix collection for energy recovery and clearly state the advantages and disadvantages of changing the separate collection. This manuscript shows the study of effectiveness to carbon dioxide emissions, energy and resource conservation, and economical effect by comparing two types, material recovery type and energy recovery type by using LCA Approach for the regional area T in Tottori prefecture as a case study. As a result, we found that energy recovery type is superior to material recovery type in energy and resource conservation and cost phase. Moreover, even though carbon dioxide emissions are higher in the case of energy recovery type, when considering the reduction of carbon dioxide emissions due to reduction of power generation, the overall emission rate will be lower than the case of material recovery type.
2011-07-20