2010 年 6 巻 1 号 p. 20-25
Professor Hanya wrote in his sociogeochemistry the migration of human society from demanding production to an environment oriented society, because of construction for sustainable society. One of important subjects for building up the environment oriented society is a recycled use of unneeded goods, which expects an introduction of idea for Life Cycle Assessment. Recycling of plastic products is significant, because plastic waste remains un-decomposed for a long time on the Earth; however, volatile organic compounds are to be released from plastic waste on the process of its compression. These volatile organic compounds may be harmful and unhealthy for human life. In fact, so-called “Suginami disease” had occurred in the vicinity of a plastic compression plant. Volatile organic compounds released on the process of plastic compression there may have caused the “Suginami disease.” Although recycling of waste products is important to sustain the environment oriented society, it is unacceptable for recycling process to bring any harmful products. Some serious problems were discussed on the plastic waste recycling.