REPROCESSING OF USED TIRES INTO ACTIVATED CARBON AND OTHER PRODUCTS

被引:160
作者
TENG, HS [1 ]
SERIO, MA [1 ]
WOJTOWICZ, MA [1 ]
BASSILAKIS, R [1 ]
SOLOMON, PR [1 ]
机构
[1] ADV FUEL RES INC,E HARTFORD,CT 06108
关键词
D O I
10.1021/ie00048a023
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Landfilling used tires which are generated each year in the United States is increasingly becoming an unacceptable solution. A better approach, from an environmental and economic standpoint, is to thermally reprocess the tires into valuable products such as activated carbon, other solid carbon forms (carbon black, graphite, and carbon fibers), and liquid fuels. In this study, high surface area activated carbons (>800 m(2)/g solid product) were produced in relatively high yields by pyrolysis of tires at up to 900 degrees C, followed by activation in CO2 at the same temperature. The surface areas of these materials are comparable with those of commercial activated carbons. The efficiency of the activation process (gain in specific surface area/loss in mass) was greatest (up to 138 m(2)/g original tire) when large pieces of tire material were used (similar to 170 mg). Oxygen pretreatment of tires was found to enhance both the yield and the surface area of the carbon product. High-pressure treatment of tires at low temperatures (<400 degrees C) is an alternative approach if the recovery of carbon black or fuel oils is the primary objective.
引用
收藏
页码:3102 / 3111
页数:10
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