World Journal of Environmental Biosciences
World Journal of Environmental Biosciences
2022 Volume 11 Issue 1

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes


Despina Vamvuka, Agapi Teftiki, Stelios Sfakiotakis
Abstract

The present study aimed to investigate the valorization of Refused Derived Fuel (RDF) produced from solid waste management units for energetic uses, through its co-gasification with agricultural or forest wastes and carbon dioxide agents. Experiments were conducted using a fixed bed reactor and a thermal analysis system. The thermal behavior, the reactivity, the conversion, and the cold gas efficiency up to 950°C were evaluated based on the structural characteristics and inherent minerals of the materials, as well as on the basis of alkali catalysts and bio-oils admixed. Kinetic analysis of the co-gasification process was performed by developing an independent parallel reactions model. Blending RDF with the woody wastes at mass ratios 30:70 increased the conversion from 55% up to 86.4%. Gasification reactivity followed the order cotton stems>sunflower>pine cones>RDF. The addition of alkali compounds at low loadings as external catalysts enhanced conversion up to 100% and the process, in general, took place at much lower temperatures. The catalytic activity followed the order: CaO> Li2CO3>K2CO3. The addition of bio-oil at ratios 1:1 increased the conversion up to values 85-92%. The kinetic model applied was proven very successful, with deviation values below 5%. In presence of 10% wt, CaO the activation energy values of biochars were lowered from 148-252 kJ/mol to 138-201 kJ/mol, implying a better performance.


How to cite this article
Vancouver
Vamvuka D, Teftiki A, Sfakiotakis S. Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes. World Journal of Environmental Biosciences. 2022;11(1):37-44. https://doi.org/10.51847/2fiOEjSU7L
APA
Vamvuka, D., Teftiki, A., & Sfakiotakis, S. (2022). Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes. World Journal of Environmental Biosciences, 11(1),37-44. https://doi.org/10.51847/2fiOEjSU7L
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