화학공학소재연구정보센터
Bioresource Technology, Vol.244, 1024-1030, 2017
The volatilization of heavy metals during co-combustion of food waste and polyvinyl chloride in air and carbon dioxide/oxygen atmosphere
The volatilization of three heavy metals (Cd, Cr and Zn) during food waste and PVC and their blending combustion in N-2/O-2 or CO2/O-2 atmosphere in a lab-scale tubular furnace was investigated. The concentration of heavy metals in combustion ash was decreased with the increment of furnace temperature in most cases. The replacement of 80N(2)/20O(2) by 80CO(2)/20O(2) decreased the volatilization rate of Cd and Cr, but increased Zn. The increased amount of PVC added into food waste led to less content of Zn in combustion ash, 5% PVC added into food waste decreased the volatilization rate of Cr but 15% PVC added led to the higher volatilization. The volatilization rate of Zn in 70CO(2)/30O(2) was significantly lower than in 85CO(2)/15O(2) or 80CO(2)/20O(2). The result contributes to the understanding of heavy metal volatilization during incineration and emission control of MSW oxy-fuel combustion.