マテリアルリサイクルの功罪(<特集>容器包装リサイクル法施行10年の歩み)

概要

論文の詳細を見る
Plastic containers and wrapping are recycled under the Containers and Packaging Recycling Law. Mechanical recycling is one of the recycling methods of plastics along with chemical recycling and energy recovery. Mechanical recycling is potentially more effective than other recycling methods because it can save not only the energy of feedstock but also the energy for plastic production processes. However, the effect of mechanical recycling of plastic containers and wrapping in the present circumstances is not always better than others. The effect of recycling depends on how much material or fuel is substituted by the recycling and the maximum efficiency is brought when the equal amount and the same kind of brand-new plastic with waste plastic is substituted. Since plastic containers and wrapping consist of a wide variety of plastics and foreign matter, it is difficult to substitute the same amount of brand-new plastic and, as a result, the effect of mechanical recycling tends to decrease. To improve the efficiency of mechanical recycling with taking advantage of its potential effectiveness, suitable applications of recycled plastics should be selected in addition to the improvement of recycling processes.
一般社団法人日本エネルギー学会の論文
2010-06-20