To study the weight loss rate and transfer behavior of heavy metals( Pb

Cu

Zn) under biomass wastes and plastic wastes co-firing conditions

experiments about seven components( wood

paper

rubber

recycled PE

recycled PP

recycled PS and recycled PVC) were conducted on a tube furnace and a atomic absorption spectrophotometer. The results show that

co-combustion of biomass and plastic wastes causes a decrease in weight loss rate of the samples

especially the paper. When the sample is burned alone

the volatilization rate of Pb can reach over 85%at 900 ℃

that of Cu in four plastic wastes can reach over 85% at 1 000 ℃

and that of Zn rises significantly at high temperatures. Pb can be captured in bottom ash when the paper is co-fired with the plastics except the PVC. Cu can be captured in bottom ash when the wood and paper are co-fired with the PVC and the rubber. Zn can be captured in bottom ash when the wood is co-fired with the plastics except the rubber or the paper with the PS.