Microwave pyrolysis of automotive paint sludge (APS): effect of APS loading and absorber on oil yield

摘要

Automotive paint sludge (APS) consists of chemicals predominantly from hydrocarbon based chemical which originated from base and clear paint and even thinner that has been sprayed on raw body of a car. Hence, it is hazardous and needs proper disposal treatment. In this study, the APS has been recovered by using microwave pyrolysis technique at 300W microwave power with 30-minute radiation time. Four different sample weight loadings with and without additional activated carbon as microwave absorber were tested; 200g, 300g, 400g and 500g. The liquid oil was collected and evaluated by using FTIR and GCMS. The results showed that microwave absorber has increased the liquid oil yield from 0.01g to 0.3g. By recovering the paint sludge, all hazardous chemicals that have the potential to be used as energy can be retrieved.