| Abstract: | Microwave processing was used to stabilize copper ions in soil samples. Its effects on the stabilization efficiency were studied
as a function of additive, microwave power, process time, and reaction atmosphere. The stabilization efficiency of the microwave
process was evaluated based on the results of the toxicity characteristic leaching procedure (TCLP) test. The results showed
that the optimal experimental condition contained a 700W microwave power, 20 min process time and 3 iron wires as the additive,
and that the highest stabilization efficiency level was more than 70%. In addition, the different reaction atmospheres showed
no apparent effect on the stabilization efficiency of copper in the artificially contaminated soil. According to the result
of the Tessier sequential extraction, the partial species of copper in the contaminated soil was deduced to transform from
unstable species to stable states after the microwave process. |
