Waste incineration of Polytetrafluoroethylene (PTFE) to evaluate potential formation of per- and Poly-Fluorinated Alkyl Substances (PFAS) in flue gas
Waste incineration of Polytetrafluoroethylene (PTFE) to evaluate potential formation of per- and Poly-Fluorinated Alkyl Substances (PFAS) in flue gas
复制标题
DOI：
10.1016/j.chemosphere.2019.03.191
复制
发表时间：
2019-07-01
期刊：
影响因子：
8.8
通讯作者：
Wexler, Manuela
中科院分区：
文献类型：
--
作者：
Aleksandrov, Krasimir;Gehrmann, Hans-Joachim;Wexler, Manuela
近年来，对一些全氟和多氟烷基物质（PFAS）的关注稳步增长。PFAS是一大组具有广泛不同性质的化学物质。虽然已证明一类PFAS（含氟聚合物）在其生命周期的使用阶段符合经合组织关于低关注聚合物的标准，但关于含氟聚合物产品使用寿命结束时的废物处理问题仍然存在。为了表明聚四氟乙烯（PTFE）几乎可以完全转化为氟（F）（如氢氟酸（HF））并研究低分子量全氟烷基和多氟烷基物质（PFAS）的可能生成，在卡尔斯鲁厄理工学院（KIT）的BRENDA（德语“Brennkammer mit Dampfkessel”的首字母缩写）试验工厂中，对PTFE在典型废物焚烧条件下的燃烧进行了研究。结果表明，在程序定量限内，未发现统计学显著性证据表明所研究的PFAS是在PTFE焚烧过程中产生的。因此，使用最佳可得技术（BAT）的城市焚烧PTFE不是所研究的PFAS的重要来源，应被视为可接受的废物处理形式。(C)2019年，任作家。爱思唯尔有限公司出版
In recent years, concerns over some per- and polyfluorinated alkyl substances (PFAS) have grown steadily. PFAS are a large group of chemical substances with widely differing properties. While one class of PFAS, fluoropolymers, have been demonstrated to meet the OECD criteria for polymers of low concern during the in use phase of their lifecycle, questions remain regarding waste handling at the end of useful life for products containing fluoropolymers. To show that polytetrafluoroethylene (PTFE) can be almost fully transformed into fluorine (F) (as hydrofluoric acid (HF)) and to study the possible generation of low molecular weight per- and polyfluorinated alkyl substances (PFAS), PTFE combustion under typical waste incineration conditions at the BRENDA (German acronym for "Brennkammer mit Dampfkessel") pilot plant at Karlsruhe Institute of Technology (KIT) was investigated. Results indicate that, within procedural quantitation limits, no statistically significant evidence was found that the PFAS studied were created during the incineration of PTFE. Therefore, municipal incineration of PTFE using best available technologies (BAT) is not a significant source of the studied PFAS and should be considered an acceptable form of waste treatment. (C) 2019 The Authors. Published by Elsevier Ltd.