Study on Thermal Conversion of the Waste Oil Absorbin Activated Carbon

Abstract

The pyrolysis and combustion characteristics of a waste oil absorbing activated carbon were investigated using a thermogravimetric analyzer under heating rate of 10°C/min from 25°C to 1000°C. The activated carbon sample was used to adsorb waste oil. The results obtained, indicates that DTG curves of the pyrolysis process of the sample has three peaks at 106°C, 190°C and 249°C. The four peaks are observed in the DTG curves of the incineration process. The first peak at 110°C is caused by water emission. The second peak corresponds to the temperature of 190°C that is consistent with the second peak temperature of the pyrolysis process of the sample. The third peak at 240°C which is 9°C lower than the third peak temperature of the pyrolysis process. The second and third peaks maybe caused by the emission of the waste oil absorbed in the activated carbon. The fourth peak temperature is 516°C and the weight loss within the range of 400°C ~ 560°C is more obvious. The weight loss is caused by the residue char combustion.

Keywords

• Waste oil absorbing activated carbon
• thermal conversion
• pyrolysis
• incineration