Conversion of Tire Waste Using Subcritical and Supercritical Water Oxidation.

Autor: Park, Yoonkook, Reaves, J. Todd, Curtis, Christine W., Roberts, Christopher B.
Zdroj: Journal of Elastomers & Plastics; Apr1999, Vol. 31 Issue 2, p162-179, 18p
Abstrakt: The properties designed into tires that make them strong and chemically resistant also inhibit their ability to be recycled easily Conventional liquid solvents do not sufficiently dissolve waste tires and tire production material for convenient separation. Supercritical water oxidation (SCWO) may provide an alternative solution to this environmental problem. Partial SCWO can be used as a means to partially break down rubber (polymeric) waste materials into lower molecular weight components that could be recovered as a chemical feedstock. In this study, the feasibility of converting waste material from tire production into useful products is explored. Batch SCWO studies illustrate the ability to efficiently break down the waste tire production material into a range of lower molecular weight organics for possible reuse depending on reaction conditions. Furthermore, a semi-continuous process has been developed and preliminary results are presented. Destruction efficiencies of greater than 0.9 were obtained in all runs regardless of reactor type. The results show SCWO to be a promising remediation alternative to the waste tire problem. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index