CHAPTER 8 PLASTICS RECYCLING AND BIODEGRADABLE PLASTICS. This chapter begins with an overview of municipal solid waste and the contribution that plastics of various types make to it.
Plastics account for only about 11.3 percent of materials in the U.S. MSW stream by weight (Fig. 8.4), but this proportion continues to increase.
The proportion by volume is very difﬁcult to determine accurately, but is certainly larger than the percent by weight, as the density of plastics is less than the average of MSW
Recycling rates for plastics differ considerably by resin and by product type