公开(公告)号：US20240182341A1

公开(公告)日：2024-06-06

申请号：US18408471

申请日：2024-01-09

Applicant: Revive Environmental Technology, LLC

Inventor： Stephen H. Rosansky ,  Michael Miller ,  Patrick Norris ,  Darwin Argumedo ,  Douglas Hendry ,  Ian Haggerty ,  Keith Brown ,  Joshua James ,  Joseph Casciano ,  Slawomir Winecki ,  Vivek Lal ,  Tom McGuinness

IPC: C02F9/00 ,  B01D61/02 ,  B01D61/08 ,  B01D61/10 ,  B04C5/04 ,  B04C5/081 ,  B04C5/085 ,  B04C5/20 ,  C02F1/02 ,  C02F1/38 ,  C02F1/44 ,  C02F1/52 ,  C02F1/72 ,  C02F101/36 ,  C02F103/06 ,  C04B35/12 ,  C04B35/622

CPC classification number: C02F9/00 ,  B01D61/025 ,  B01D61/08 ,  B01D61/10 ,  B04C5/04 ,  B04C5/081 ,  B04C5/085 ,  B04C5/20 ,  C04B35/12 ,  C04B35/62222 ,  B01D2311/08 ,  B01D2311/103 ,  B01D2311/1031 ,  B01D2311/12 ,  B01D2311/2634 ,  B01D2311/2642 ,  B01D2311/2649 ,  B01D2311/2676 ,  B01D2313/221 ,  C02F1/02 ,  C02F1/38 ,  C02F1/441 ,  C02F1/52 ,  C02F1/72 ,  C02F2101/36 ,  C02F2103/06 ,  C02F2303/10 ,  C04B2235/9692

Abstract: Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water is concentrated in a reverse osmosis step and salt from the resulting solution is removed in supercritical conditions prior to destruction of PFAS in supercritical conditions.

公开(公告)号：US11891323B2

公开(公告)日：2024-02-06

申请号：US17883600

申请日：2022-08-09

Applicant: Revive Environmental Technology, LLC

Inventor： Stephen H. Rosansky ,  Michael Miller ,  Patrick Norris ,  Darwin Argumedo ,  Douglas Hendry ,  Ian Haggerty ,  Keith Brown ,  Joshua James ,  Joseph Casciano ,  Slawomir Winecki ,  Vivek Lal ,  Tom McGuinness

IPC: B01D61/02 ,  B01D61/08 ,  B01D61/10 ,  C02F1/02 ,  C02F1/38 ,  C02F1/44 ,  C02F1/52 ,  C02F1/72 ,  C02F101/36 ,  C02F103/06 ,  C02F9/00 ,  B04C5/04 ,  B04C5/081 ,  B04C5/085 ,  B04C5/20 ,  C04B35/12 ,  C04B35/622

CPC classification number: C02F9/00 ,  B01D61/025 ,  B01D61/08 ,  B01D61/10 ,  B04C5/04 ,  B04C5/081 ,  B04C5/085 ,  B04C5/20 ,  C04B35/12 ,  C04B35/62222 ,  B01D2311/08 ,  B01D2311/103 ,  B01D2311/12 ,  B01D2311/2634 ,  B01D2311/2642 ,  B01D2311/2649 ,  B01D2311/2676 ,  B01D2313/221 ,  C02F1/02 ,  C02F1/38 ,  C02F1/441 ,  C02F1/52 ,  C02F1/72 ,  C02F2101/36 ,  C02F2103/06 ,  C02F2303/10 ,  C04B2235/9692

Abstract: Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water is concentrated in a reverse osmosis step and salt from the resulting solution is removed in supercritical conditions prior to destruction of PFAS in supercritical conditions.

公开(公告)号：US20250002382A1

公开(公告)日：2025-01-02

申请号：US18546723

申请日：2023-04-05

Applicant: Revive Environmental Technology, LLC

Inventor： Ian Haggerty ,  Lindy E. Dejarme ,  Stephen H. Rosansky ,  Richard J. Olson ,  Julia Stowe ,  Michael Miller

IPC: C02F1/72 ,  C02F1/04 ,  C02F11/08 ,  C02F101/36

Abstract: During testing of destruction of PFAS, we observed failure of the process tubing used for supercritical water oxidation. Metallurgical analysis of the failed tubing surprisingly revealed that hydrogen embrittlement led to the failure. In the present invention, conditions are modified to avoid or reduce hydrogen embrittlement.

公开(公告)号：US20240417291A1

公开(公告)日：2024-12-19

申请号：US18675137

申请日：2024-05-27

Applicant: Revive Environmental Technology, LLC

Inventor： Taylor Cochran ,  Samer AL-Dirani ,  Stephen H. Rosansky ,  Terrance Walsh ,  Kamanu Loo ,  Cristina Piekarz

IPC: C02F1/66 ,  C02F1/02 ,  C02F1/44 ,  C02F1/52 ,  C02F1/72 ,  C02F101/12 ,  C02F101/36

Abstract: Perfluorinated alkyl substances (PFAS) or other contaminants are destroyed by an oxidation reaction under hydrothermal or supercritical conditions is improved by pretreatments such as the addition of acetic acid. Systems for destroying the contaminants are also described.

公开(公告)号：US20230373824A1

公开(公告)日：2023-11-23

申请号：US18200506

申请日：2023-05-22

Applicant: Revive Environmental Technology, LLC

Inventor： Christopher Scheitlin ,  Kavitha Dasu ,  Stephen H. Rosansky ,  Julia Stowe

IPC: C02F1/72 ,  C02F11/08

CPC classification number: C02F1/722 ,  C02F11/086 ,  C02F2101/36

Abstract: Supercritical water oxidation (SCWO) is a destruction technology to quickly treat per- and polyfluoroalkyl substance (PFAS)-impacted groundwater, investigation derived waste, and other aqueous matrices such as landfill leachate and aqueous film forming foam. Laboratory-prepared and field-collected samples with inlet PFAS concentrations up to 50 parts per million were consistently destroyed to less than 70 parts per trillion for all PFAS, when running at the determined optimal operating conditions (≥600° C. and 3,500 pounds per square inch). We investigated the correlation between temperature and flowrate of the system, finding that reactor temperatures ≥450° C. destroys perfluorinated carbonic acids, but higher temperatures and specified conditions are necessary to destroy perfluorosulfonic acids. Using a higher density oxygen source also increases the throughput of a SCWO reactor, here up to 140 mL/min, without affecting PFAS destruction. Continuous 5-log reduction in the concentration of PFAS (99.999% destruction) is demonstrated for 3 hours at steady-state operation. The destruction efficiency is not impacted by the addition of co-contaminants such as petroleum and other organic hydrocarbons, and the SCWO process is successfully applied to waste streams without pretreatment. The treated effluent is largely comprised of complete combustion products including carbon dioxide, water, and the corresponding anion acids; hence, the treated liquid can be released back into the environment after neutralization.