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Received July 19, 2008
Accepted November 18, 2008
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Thermogravimetric analysis and pyrolysis of waste mixtures of paint and tar slag
School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, P. R. China
Korean Journal of Chemical Engineering, May 2009, 26(3), 856-861(6), 10.1007/s11814-009-0143-5
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Abstract
We describe thermogravimetric analyses and pyrolysis kinetic studies carried out on hazardous waste mixtures of tar slag, paint slag, paper, sodium sulfate and calcium oxide. Both thermogravimetric (TG) and differential thermogravimetric (DTG) profiles were measured by a thermogravimetric analyzer at different final temperatures, particle sizes and heating rates. Pyrolysis kinetic parameters were calculated by the Coats-Redfern method. Influences of particle size, heating rate and final temperature on pyrolysis yields and kinetic parameters are also discussed. The results show that final temperature and particle size have a great effect on pyrolysis yields. We find that with increasing temperature the activation energy initially increases to a maximum value and then decreases.
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