The influence of the flue gas temperature on the concentration of metals in fly ash and deposited... more The influence of the flue gas temperature on the concentration of metals in fly ash and deposited ash during heavy-metal-contaminated woody biomass combustion was investigated. The biomass gathered from heavy-metal-contaminated soil was combusted in a 34 kWth boiler, and the metal flow was monitored through the metal content of solid residues for up to 30 elements. The flue gas temperature was controlled by the heat exchanger, and it was found that, by decreasing the temperature, more metals can be kept inside the combustion system, potentially lowering the environmental heavy metal pollution because more metal volatiles are being condensed on fly ash particles, which can be separated using known filtration techniques. The concentrations of Ag, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Si, Sn, Ti, V, and Zr were significantly higher in fly ash samples collected at 150 °C flue gas temperature compared to the 250 °C case, indicating a strong temperature dependence. A minor temperature dependence was observed in deposited ash samples for most elements. On the basis of the results, decreasing the flue gas temperature is a viable method for lowering metal emission during contaminated woody biomass combustion.
The influence of the flue gas temperature on the concentration of metals in fly ash and deposited... more The influence of the flue gas temperature on the concentration of metals in fly ash and deposited ash during heavy-metal-contaminated woody biomass combustion was investigated. The biomass gathered from heavy-metal-contaminated soil was combusted in a 34 kWth boiler, and the metal flow was monitored through the metal content of solid residues for up to 30 elements. The flue gas temperature was controlled by the heat exchanger, and it was found that, by decreasing the temperature, more metals can be kept inside the combustion system, potentially lowering the environmental heavy metal pollution because more metal volatiles are being condensed on fly ash particles, which can be separated using known filtration techniques. The concentrations of Ag, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Si, Sn, Ti, V, and Zr were significantly higher in fly ash samples collected at 150 °C flue gas temperature compared to the 250 °C case, indicating a strong temperature dependence. A minor temperature dependence was observed in deposited ash samples for most elements. On the basis of the results, decreasing the flue gas temperature is a viable method for lowering metal emission during contaminated woody biomass combustion.
The influence of the flue gas temperature on the concentration of metals in fly ash and deposited... more The influence of the flue gas temperature on the concentration of metals in fly ash and deposited ash during heavy-metal-contaminated woody biomass combustion was investigated. The biomass gathered from heavy-metal-contaminated soil was combusted in a 34 kWth boiler, and the metal flow was monitored through the metal content of solid residues for up to 30 elements. The flue gas temperature was controlled by the heat exchanger, and it was found that, by decreasing the temperature, more metals can be kept inside the combustion system, potentially lowering the environmental heavy metal pollution because more metal volatiles are being condensed on fly ash particles, which can be separated using known filtration techniques. The concentrations of Ag, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Si, Sn, Ti, V, and Zr were significantly higher in fly ash samples collected at 150 °C flue gas temperature compared to the 250 °C case, indicating a strong temperature dependence. A minor temperature dependence was observed in deposited ash samples for most elements. On the basis of the results, decreasing the flue gas temperature is a viable method for lowering metal emission during contaminated woody biomass combustion.
The influence of the flue gas temperature on the concentration of metals in fly ash and deposited... more The influence of the flue gas temperature on the concentration of metals in fly ash and deposited ash during heavy-metal-contaminated woody biomass combustion was investigated. The biomass gathered from heavy-metal-contaminated soil was combusted in a 34 kWth boiler, and the metal flow was monitored through the metal content of solid residues for up to 30 elements. The flue gas temperature was controlled by the heat exchanger, and it was found that, by decreasing the temperature, more metals can be kept inside the combustion system, potentially lowering the environmental heavy metal pollution because more metal volatiles are being condensed on fly ash particles, which can be separated using known filtration techniques. The concentrations of Ag, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Si, Sn, Ti, V, and Zr were significantly higher in fly ash samples collected at 150 °C flue gas temperature compared to the 250 °C case, indicating a strong temperature dependence. A minor temperature dependence was observed in deposited ash samples for most elements. On the basis of the results, decreasing the flue gas temperature is a viable method for lowering metal emission during contaminated woody biomass combustion.
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