Dissertation in applied chemistry

11/05/2015

MSc Cyril Bajamundi’s doctoral dissertation in applied chemistry entitled “Sulfur based abatement of PCDD/F production and alkali chloride production during fluidized bed combustion of solid recovered fuel” presents the production and abatement of polychlorinated dibenzo-p-dioxins/ dibenzofuran (PCDD/F), and alkali chloride production. The results of the work indicate that sulfur based additives can be a practicable solution to efficient waste management.

Energy recovery from waste is one viable option for ensuring efficient waste management. It can reduce landfill waste by up to 20 fold by volume leaving only sterile residues. However, there are several issues that are against the realization of this potential. Waste-to-energy facilities are considered by some as “dioxin factories”, and Cl in the waste could cause significant profit loss due to corrosion.

This work presents the production and abatement of polychlorinated dibenzo-p-dioxins/ dibenzofuran (PCDD/F), and alkali chloride production in a 140 MWth bubbling fluidized boiler fired with fuel mixtures containing a high energy-share of solid recovered fuel. Sulfur based additives induce sulfation of Cu and alkali salt. These additives can readily be applied in similar fluidized bed combustion and can therefore be a practicable solution to the issues discussed.

Public examination on 15 May

The public examination of MSc Cyril Bajamundi’s doctoral dissertation “Sulfur based abatement of PCDD/F production and alkali chloride production during fluidized bed combustion of solid recovered fuel” is held in University of Jyväskylä, Ylistönrinne, KEM on 15 May at 12. The opponent is Ass. Prof. Lars-Erik Åmand (Chalmers University of Technology) and custos is Professor Raimo Alen (University of Jyväskylä).

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