https://scholars.lib.ntu.edu.tw/handle/123456789/625375
標題: | Evaluation of polychiorinated dibenzo-p-dioxins and dibenzofurans leachability from air pollution control residues with multiple extraction procedures | 作者: | HSING-CHENG HSI Yu T.-H. |
公開日期: | 2007 | 卷: | 3 | 起(迄)頁: | 1608-1612 | 來源出版物: | 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007 | 摘要: | This study examined the leaching characteristics of PCDD/Fs from raw and solidified APC residues using humic acid and n-hexane as leachants. PCDD/Fs were observed to stably retain in APC residues when these samples were multiply leached with humic acid and n-hexane. However, the leaching mechanisms of PCDD/Fs for samples treated with humic acid and n-hexane appeared to be different. Humic acid showed a stronger affinity to bind with highly chlorinated PCDD/Fs. Leaching of PCDD/Fs with n-hexane was, in contrast, primarily caused from the partition of hydrophobic PCDD/Fs between the APC residue surface and the liquid phase of n-hexane. S/S decreased the PCDD/F leachability at a leaching duration up to ∼90 h with humic acid. However, S/S significantly increased the PCDD/F leaching concentrations and rates with n-hexane. The toxicity of n-hexane leachates also markedly increased due to releasing a significant amount of low chlorinated PCDD/Fs after S/S. The effectiveness of activated carbon on inhibiting the PCDD/F release was also verified via both humic acid and n-hexane multiple leaching tests. © 2007 by the Air & Waste Management Association. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84933509384&partnerID=40&md5=78d102c7babc335684394c6b468d1e51 https://scholars.lib.ntu.edu.tw/handle/123456789/625375 |
SDG/關鍵字: | Activated carbon; Biological materials; Carbon; Hexane; Leaching; Organic acids; Pollution control; Waste management; Air pollution control residues; Dibenzo p dioxins; Dibenzofurans; Leaching characteristics; Leaching concentrations; Leaching mechanism; Leaching test; Multiple extraction procedures; Air pollution control |
顯示於: | 環境工程學研究所 |
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