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首页> 外文期刊>Environmental Science & Technology >Removal of PCDD/Fs from Flue Gas by a Fixed-Bed Activated Carbon Filter in a Hazardous Waste Incinerator
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Removal of PCDD/Fs from Flue Gas by a Fixed-Bed Activated Carbon Filter in a Hazardous Waste Incinerator

机译：用危险废物焚化炉中的固定床活性炭过滤器去除烟气中的PCDD / Fs

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The adsorption of polychlorinated dibenzodioxins and dibenzofurans (PCDD/Fs) by activated carbon (AC) was examined in a fixed-bed AC unit in a hazardous waste incinerator (IZAYDAS) in Turkey. Results showed that the removal efficiencies of PCDD/Fs decrease as the chlorination level increases, which was explained by the difference in gas/particle partitioning of the compounds. Since dioxins are tightly adsorbed by activated carbon, other flue gas constituents showed no clear effect on the dioxin removal. Adsorption kinetics indicated that the adsorption of volatile congeners and homologues fits well with Henry's law, possibly due to the higher gaseous fractions, while the correlation was lower for lowly volatile ones. PCDD/F congeners and homologues had a concentration value up to which no adsorption occurred, which could be attributed to the insufficient contact times at the low concentrations.
机译：在土耳其的危险废物焚烧炉（IZAYDAS）的固定床AC装置中，研究了活性炭（AC）对多氯二苯并二恶英和二苯并呋喃（PCDD / Fs）的吸附。结果表明，随着氯化水平的提高，PCDD / Fs的去除效率降低，这可以通过化合物的气体/颗粒分配差异来解释。由于二恶英被活性炭紧密吸附，其他烟气成分对二恶英的去除没有明显作用。吸附动力学表明，挥发性同系物和同系物的吸附符合亨利定律，这可能是由于较高的气态馏分，而对于低挥发性的馏分的相关性较低。 PCDD / F同系物和同系物的浓度值最高不会发生吸附，这可能是由于在低浓度下接触时间不足所致。

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