Abstract
In this research, the emission reduction effects of PCB countermeasures in Japan were estimated. It was estimated that the cumulative emission reduction of waste storage from 1950 to 2050 was 65.9tons and the cumulative emission reduction by waste destruction was 65.6tons. Additional waste treatment was estimated to have 3 to 23tons emission reduction. Waste decomposition, which reduces PCB stock, reduces not only immediate emissions but also future emission risks. On the other hand, there are some possibilities that waste storage cannot reduce long-term emissions because PCB stock is kept. Moreover, it was suggested that there are some risks that future emissions would increase in the case of long-term waste storage. It was estimated that the increased rate of PCB waste loss would cause approximately 60 to 110tons increase in cumulative emissions. In conclusion, it was suggested that PCB waste storage has a temporary emission reduction effect, but it is essential to destroy PCB waste in order to reduce future emission risks.
