Abstract
In this work the efficiency of postcombustion measures (i.e., activated carbon utilization) to achieve cleaner solid fuels combustion was evaluated. Thus, two commercial activated carbons (Calgon F400 and RWE active coke) were tested for removing toxic polluting compounds (Hg, PCBs, PCDD/Fs) from the gas phase. The effects of the pore structure and surface chemistry of the activated carbons tested were investigated, along with the sorption temperature and sulfur addition in carbon matrix. Experiments were realized in a bench-scale adsorption unit and in a commercial solid fuels-fired hot water boiler. The results showed that both activated carbons tested are suitable for the removal of toxic compounds (i.e., Hg, PCBs, PCDD/Fs) from the gas phase. Due to differences in Hg adsorptive capacity and adsorption rate, which are attributed to the diversified pore structure and surface chemistry of the activated carbons, RWE active coke is, presumably, more suitable for continuous Hg removal (i.e., activated carbo...
Published Version
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