Estimation of the characteristics with hydrothermal carbonisation temperature on poultry slaughterhouse wastes

Abstract

This study is an assessment of the hydrothermal carbonisation of poultry slaughterhouse wastes sludge for the solid recovered fuel. The effects of hydrothermal carbonisation were evaluated by varying the reaction temperatures in the range of 170 °C–220 °C. After hydrothermal carbonisation was completed, the capillary suction time, time to filter, and particle size decreased by ranges of 170.4 to 25.9 s, 40 to 7.0 s, and 220 to 98 um, respectively, with increasing hydrothermal carbonisation temperature. This effect improved the dewaterability to release additional free water from the sludge. Moreover, hydrothermal carbonisation increased the heating value though the reduction of the hydrogen and oxygen content of solid fuel in addition to investigating drying performance. As shown in the Van Krevelen diagram, the H/C and O/C ratios decreased, in correlation with primary reactions of coalification. These results suggest that the hydrothermal carbonisation process is an advantageous technology in improving the properties of poultry slaughterhouse wastes as an alternative solid recovered fuel by converting the physical and chemical structure of the poultry slaughterhouse wastes in addition to also providing other benefits to treat organic and biomass waste.

Keywords

Hydrothermal carbonisation poultry slaughterhouse wastes solid recovered fuel Van Krevelen diagram coalification

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