Pyrolysis and gasification of typical components in wastes with macro-TGA

Waste Management
Aihong MengQinghai Li

Abstract

The pyrolysis and gasification of typical components of solid waste, cellulose, hemicellulose, lignin, pectin, starch, polyethylene (PE), polystyrene (PS), polyvinyl chloride (PVC) and poly(ethylene terephthalate) (PET) were performed and compared in a macro thermogravimetric analyzer (macro-TGA). Three model biomasses, poplar stem, orange peel and Chinese cabbage, were applied to pyrolysis and gasification simulation by their components based on TG curves. Compared to those from TGA, peaks temperature of the differential thermogravimetric (DTG) curves of each samples pyrolysis on macro-TGA delayed 30-55°C due to heat transferring effect. CO2 promoted the thermal decomposition of hemicellulose, lignin, starch, pectin and model biomasses significantly by Boudouard reaction, and enhanced slightly the decomposition of PET. The activation energy (AE) of biomass components pyrolysis on macro-TGA was 167-197kJ/mol, while that of plastic samples was 185-235kJ/mol. The activation energy of 351-377kJ/mol was corresponding to the Boudouard reaction in CO2 gasification. All overlap ratios in pseudo-components simulation were higher than 0.98 to indicate that pseudo-components model could be applied to both pyrolysis and CO2 gasification, ...Continue Reading

References

Sep 29, 2009·Analytica Chimica Acta·Mi-Kyung BahngMark R Nimlos
Oct 17, 2009·Waste Management·Emilia den BoerRyszard Szpadt
Jan 15, 2010·Bioresource Technology·Agustín García BarnetoRafael Sánchez Serrano
Jun 20, 2014·Journal of the Air & Waste Management Association·Hui ZhouYanguo Zhang

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Citations

Apr 20, 2016·Journal of Environmental Management·S VakalisM Baratieri
Jul 25, 2020·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Spyridoula GerassimidouDimitrios Komilis

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