B111 循環溶媒を用いたプリント基板からの資源回収(OS3 バイオマス・新燃料・環境技術(2))

抄録

Recovered and recycle useful metal from waste of electric and electronic equipment (WEEE) is necessary to secure a stable material supply Fiber reinforced epoxy board was liquefied in biomass derived tar solvent That was liquefied by using tar derived from Japanese cedar and benzyl alcohol or cresol mixture solvent also Tar solvent was prepared from the liquid product by removing light fraction Epoxy board was liquefied almost completely in the tar solvent from Japanese cedar and cresol mixture solvent at 300℃ for 120 min under atmospheric pressure Finally, most of solvent was recovered from thermal decomposition of the once liquefied epoxy board at 500 -800℃ These experimental results indicate that waste printed circuit board can be liquefied in a recyclable solvent that was derived from the once liquefied epoxy board