Research Review of Recycling of Nonmetal Fraction from Waste Print Circuit Boards Treatment

Waste printed circuit boards (WPCBs) treatment has been a hot and difficulty topic in handling of electronic waste. Previous research efforts have been put in the methods of separation of metal and nonmetal fractions and how to recycle the metal fractions. The recycling of nonmetal fraction becomes more and more important due to its large volume and hazardous characterizations. In this paper the recycling of nonmetal fractions are summarized and future research directions are discussed, providing reference for the WPCBs recycling industry development.