DESTRUCTION OF PFAS VIA OXIDATION PROCESS AND APPARATUS SUITABLE FOR TRANSPORTATION TO CONTAMINATED SITES

To destroy PFAS by oxidation in supercritical water (SCWO).SOLUTION: A method of destroying PFAS in a PFAS-containing aqueous mixture comprises the step for reacting PFAS with an aqueous oxidant under supercritical conditions to produce effluent and further comprises treating the effluent from the s...

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Hauptverfasser:	JEFFREY ELLIS, DAVID HOLLEY, LINDY E DEJARME, DAN GARBARK, AMY DINDAL, CHRISTOPHER GORDON SCHEITLIN, JOHN TALLARICO, RUSSELL R SIRABIAN, KAVITHA DASU, AMY HEINTZ, DOUG HENDRY, JOSEPH CASCIANO, NATHAN BRYANT, JOSHUA JAMES, SLAWOMIR WINECKI, MICHAEL M MILLER, KEITH BROWN, DARWIN ARGUMEDO, AARON FRANK
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Zusammenfassung:	To destroy PFAS by oxidation in supercritical water (SCWO).SOLUTION: A method of destroying PFAS in a PFAS-containing aqueous mixture comprises the step for reacting PFAS with an aqueous oxidant under supercritical conditions to produce effluent and further comprises treating the effluent from the step for reaction with the aqueous oxidant with an alkali or alkaline earth element, thereby converting PFAS into an aqueous product mixture containing carbon dioxide and an alkali or alkaline earth fluoride.SELECTED DRAWING: Figure 6A 【課題】本発明では、ＰＦＡＳは、超臨界水中での酸化（ｓｕｐｅｒｃｒｉｔｉｃａｌｗａｔｅｒｏｘｉｄａｔｉｏｎ、ＳＣＷＯ）によって破壊される。【解決手段】ＰＦＡＳ含有水性混合物中のＰＦＡＳを破壊する方法であって、超臨界条件下でＰＦＡＳを水性酸化剤と反応させて排出物を生成することを含み、さらに、水性酸化剤と反応させるステップからの前記排出物をアルカリ又はアルカリ土類元素で処理して、前記ＰＦＡＳを二酸化炭素及びアルカリ若しくはアルカリ土類フッ化物を含む水性生成混合物に変換することを含む、方法。【選択図】図６Ａ