Title: Pyrolysis properties of municipal sewage sludge with ZnCl₂ activation under the N₂ atmosphere

Authors: Y.B. Zhai, G.M. Zeng, C.T. Li, X.X. Wei, L.F. Wang

Addresses: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. ' College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. ' College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. ' College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. ' College of Economy and Trade, Hunan University, Changsha 410082, China

Abstract: The municipal sewage sludge with ZnCl₂ activation was pyrolysed to obtain useful porous adsorbents. The thermogravimetric analysis and FTIR methods were used to work out the properties of dried sewage sludge with ZnCl₂ activation from the Changsha secondary wastewater-treatment plant. The experimental results showed that three stages of weight loss were observed under the heating rates of 15°C/min and 30°C/min, respectively. And combined with the FTIR, CO₂ and H₂O appeared at every stage. The experimental data were processed through differential coefficient methods and the different mechanical equations of pyrolysis reaction, and gained the kinetic parameters. The results can be academic references for the pyrolysis of sewage sludge in practice.

Keywords: sewage sludge; chemical activation; zinc chloride; pyrolysis; kinetics parameters; solid waste management; wastewater treatment.

DOI: 10.1504/IJEWM.2008.021859

International Journal of Environment and Waste Management, 2008 Vol.2 No.6, pp.549 - 558

Published online: 06 Dec 2008 *

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