Degradation of plastics to liberate metals from electronic waste

被引：0
|
作者：
Kvithyld, Anne [1 ]
Shuey, Scott [2 ]
Gaal, Sean [3 ]
Taylor, Patrick [4 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Mat Technol, NO-7491 Trondheim, Norway
[2] Freeport McMoRan Mining Co, Proc Technol Ctr, Safford 85548, AZ USA
[3] SINTEF, Dept Chem Mat, Trondheim, Norway
[4] Colorado Sch Mines, Dept Mat & Met Engn, Boulder, CO 80301 USA
来源：
EPD CONGRESS 2008 | 2008年
关键词：
electronic waste recycling; degradation plastics;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Printed circuited boards contain considerable quantities of valuable metal, while also containing many environmental pollutants making them unsuitable for landfill. In this study the decomposition of common plastics used in printed circuit boards were studied. Polytetrafluoroethylene (PTFE), polyvinyl chloride. (PVC) and polyethylene (PE) were heated in both CO2 and argon atmospheres using a thermo-gravimetric furnace (TG) coupled to a mass, spectrometer (MS). Soda ash Na2CO3 and baking soda NaHCO3 were used as reactants. The degradation temperatures and evolved gases are presented for single plastics and mixtures. Mixed plastics ace shown to behave as a sum of the individual plastics. The mass loss temperature is the same in CO2 and argon. However, less residue is formed when heated in CO2.
引用
收藏
页码：497 / +
页数：2
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