https://scholars.lib.ntu.edu.tw/handle/123456789/425177
標題: | Quasi-dynamic leaching characteristics of polychlorinated dibenzo-p-dioxins and dibenzofurans from raw and solidified waste incineration residues | 作者: | HSING-CHENG HSI Wang, Lin Chi Yu, Tsung Hsien Chang-Chien, Guo Ping |
關鍵字: | Activated carbon | Incineration residue | Multiple leaching | PCDD/F | Solidification | 公開日期: | 1-三月-2008 | 出版社: | PERGAMON-ELSEVIER SCIENCE LTD | 卷: | 71 | 期: | 2 | 起(迄)頁: | 284 | 來源出版物: | Chemosphere | 摘要: | Quasi-dynamic leaching characteristics of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from raw and solidified air pollution control (APC) residues were examined via a nine-time multiple leaching test. The effect of injected activated carbon in the APC residues on the PCDD/F leachability was also evaluated. When humic acid solution was used as a leachant, the leaching concentrations of PCDD/Fs fluctuated between the first and the fifth leaching, followed by a gradual increase and then suddenly reached maximum values at the leaching sequences around seventh and eighth. This significant enhancement in PCDD/F leachability was mainly due to an increase in the release of highly chlorinated PCDD/Fs. Leaching of PCDD/Fs with n-hexane was, in contrast, primarily caused by the partitioning of hydrophobic PCDD/Fs between the APC residue surface and the liquid phase of n-hexane. Consequently, the largest leaching concentrations for n-hexane tests achieved at the first leaching, followed by a decrease and reached plateaus. Solidification/stabilization (S/S) decreased the PCDD/F leachability up to the fifth leaching by the use of humic acid solution. However, S/S increased the PCDD/F leaching concentrations and rates with n-hexane. The activated carbon in APC residues significantly inhibited the release of PCDD/F with n-hexane. The inhibiting effect provided by activated carbon was, however, less significant by the use of humic acid solution. © 2007 Elsevier Ltd. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425177 https://www.scopus.com/inward/record.uri?eid=2-s2.0-39149144555&doi=10.1016%2fj.chemosphere.2007.09.014&partnerID=40&md5=6d386e51b8966a79b0751d008f2f6426 |
ISSN: | 00456535 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/39149144555 10.1016/j.chemosphere.2007.09.014 |
顯示於: | 環境工程學研究所 |
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