The effects of FeCl3 on the distribution of the heavy metals Cd, Cu, Cr, and Zn in a simulated multimetal incineration system.
The effects of FeCl3 on the distribution of the heavy metals Cd, Cu, Cr, and Zn in a simulated multimetal incineration system.
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DOI：
10.1016/s0160-4120(00)00115-x
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发表时间：
2001-04
影响因子：
11.8
通讯作者：
Kuen‐Sheng Wang;K. Chiang;Chin-Chang Tsai;Chang-Jung Sun;Chen-Chiu Tsai;Kae-Long Lin
中科院分区：
文献类型：
--
作者：
Kuen‐Sheng Wang;K. Chiang;Chin-Chang Tsai;Chang-Jung Sun;Chen-Chiu Tsai;Kae-Long Lin
认识到源自废物的氯可在城市固体废物燃烧过程中形成挥发性金属氯化物，从而增加重金属的排放，在台湾，含FeCl 3的污水污泥可被填埋或与其他城市固体废物共同焚烧，因此，本研究利用管式炉和FeCl 3-，研究了FeCl 3对多金属焚烧系统中重金属形态和分配的影响。掺加模拟废物。氯含量与重金属含量的摩尔比（称为Cl/M比），范围从3到200，被用作一个参数，以评估氯对焚烧炉排放物之间的重金属移动的影响。结果表明，燃烧体系中氯与重金属、氯与氢之间的亲和力与氯的形态和分配有关。增加Cl/M比对金属氯化物生成势的影响以及对重金属从底灰向飞灰和/或烟气迁移的影响顺序为：Zn>Cu>Cr，这一现象基本反映了燃烧过程中重金属及其氯化物的挥发性。
Recognizing that waste-derived chlorine can enhance heavy metal emissions by forming volatile metallic chlorides during municipal solid waste (MSW) combustion, and that in Taiwan, FeCl3-containing sewage sludge may either be landfilled or coincinerated with other MSW, this study thus investigated the effects of FeCl3on the speciation and partitioning of heavy metals in a multimetal incineration system by using a tubular furnace and FeCl3-spiked simulated wastes. The molar ratio of chlorine content to heavy metal content (referred to as the Cl/M ratio), ranging from 3 to 200, was used as a parameter to evaluate the effects of chlorine on the movement of heavy metals between the incinerator discharges. Results indicate that speciation and partitioning were related to the affinity between the chlorine and the heavy metals and between chlorine and hydrogen in the combustion system. The effectiveness of increasing the Cl/M ratio to the formation potential of metallic chlorides and on the shift of heavy metals from the bottom ash to the fly ash and/or the flue gases was found to have in increasing order as follows: Zn>Cu>Cr, a phenomenon basically reflecting the volatility of the heavy metals and their chlorides formed during combustion.