Thermal mineralization of Perfluorooctanoic acid (PFOA): The synergistic role of oxygen and water vapor inhibiting products of incomplete destruction (PID) formation

被引：1

作者：

Weber, Nathan H. ^{[1
,2
]}

Mackie, John C. ^{[1
]}

Redfern, Hayden ^{[1
]}

Banks, Edwin ^{[1
]}

Grimison, Charles C. ^{[3
]}

Lucas, John A. ^{[3
,4
]}

Stockenhuber, Michael ^{[1
]}

Kennedy, Eric M. ^{[1
]}

机构：

[1] Univ Newcastle, Sch Engn, Discipline Chem Engn, Callaghan, NSW 2308, Australia

[2] US EPA, Oak Ridge Inst Sci & Educ, Off Res & Dev, Res Triangle Pk, NC 27711 USA

[3] Ventia Util Serv Pty Ltd, North Sydney, NSW 2060, Australia

[4] Monash Univ, Dept Chem & Biol Engn, Clayton, Vic 3800, Australia

来源：

CHEMICAL ENGINEERING SCIENCE | 2025年 / 301卷

基金：

澳大利亚研究理事会;

关键词：

PFAS; Perfluorooctanoic acid (PFOA); Thermal Mineralization; Treatment; Chemical kinetics; CARBONYL FLUORIDE; CF2O;

D O I：

10.1016/j.ces.2024.120659

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The thermal decomposition of PFOA was studied in an alpha-alumina reactor between 400 and 1000 degrees C under two separate conditions: 1) in a bath gas of air and water vapor (H2O(g)) and 2) in a bath gas of helium, nitrous oxide (N2O) and H2O(g). PFOA decomposition studies undertaken under these conditions, both experimental and modeling analysis, provided insightful information on the conditions leading to the formation of products of incomplete destruction (PIDs). The combination of O-2 from air or O from N2O decomposition, combined with H2O(g), resulted in complete mineralization of PFOA at temperatures above 950 degrees C into HF and CO2. An elementary mass balance of F and C atoms concluded that, at 1000 degrees C, 105 +/- 10 % of F atoms present in PFOA are converted into HF, while 100 +/- 5 % of C atoms into CO2. Both H2O(g) and oxygen together are necessary for complete mineralization.

引用

页数：13