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公开(公告)号：AU2020304684A1
公开(公告)日：2021-12-16
申请号：AU2020304684
申请日：2020-06-29
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： ELLIS JEFFREY , DEJARME LINDY E , DASU KAVITHA , SIRABIAN RUSSELL R , DINDAL AMY , HEINTZ AMY , GARBARK DAN , BRYANT NATHAN , TALLARICO JOHN , CASCIANO JOSEPH , WINECKI SLAWOMIR , HOLLEY DAVID , JAMES JOSHUA , BROWN KEITH , HENDRY DOUG , ARGUMEDO DARWIN , FRANK AARON , SCHEITLIN CHRISTOPHER GORDON , MILLER MICHAEL M
IPC: C02F1/72 , C02F1/02 , C02F1/04 , C02F1/44 , C02F101/36
Abstract: Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water can be concentrated and prepared for destruction in a pretreatment phase. Following annihilation of the PFAS in supercritical conditions to levels below 5 parts per trillion (ppt), the water effluent can be used to recover heat, returned to sub-critical conditions, and then released back into the environment.
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公开(公告)号：AU2020245492A1
公开(公告)日：2021-10-07
申请号：AU2020245492
申请日：2020-03-25
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： JAMES RYAN R , DASU KAVITHA , SIRIWARDENA DINUSHA , PALA FRANCO , IERY RAMONA DARLINGTON
Abstract: The invention provides methods for regenerating activated carbon that have been used in absorbing per- and polyfluoroalkyl substances (PFAS) in aqueous solution. In these methods, the activated carbon is treated with a solution of base in alcohol, which has been found to impart superior properties to the activated carbon.
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公开(公告)号：AU2020369678A1
公开(公告)日：2022-04-14
申请号：AU2020369678
申请日：2020-10-26
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： DEJARME LINDY E , DASU KAVITHA
IPC: C02F1/72 , C02F101/34 , C02F101/36 , C02F103/36
Abstract: We have discovered that heating PFAS in the presence of silica resulted in destruction of over 90% of PFAS under surprisingly mild conditions. Experimental results are presented showing that the reaction occurs along with etching of the silica glass, presumably caused by HF created during the reaction or in previous reactions. The methods of destroying PFAS are especially effective for treating relatively concentrated solutions such as those commonly encountered in AFFF waste stock and cleanup near fire-fighting training sites, as well as concentrated waste solutions from industrial sites involving the manufacture or application of PFAS.
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公开(公告)号：AU2025202387A1
公开(公告)日：2025-04-24
申请号：AU2025202387
申请日：2025-04-03
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： PALA FRANCO , KALTENBERG ELIZA M , DASU KAVITHA , GRIESEMER FRED , WESTLAKE BRADLEY , NANES GEORGE
Abstract: Methods of passively sampling PFAS in the environment, PFAS sorbents, apparatus and systems (apparatus plus conditions) for sampling groundwater, porewater, and surface water are described.
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公开(公告)号：CA3151639A1
公开(公告)日：2021-04-29
申请号：CA3151639
申请日：2020-10-26
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： DEJARME LINDY E , DASU KAVITHA
IPC: C02F1/72
Abstract: We have discovered that heating PFAS in the presence of silica resulted in destruction of over 90% of PFAS under surprisingly mild conditions. Experimental results are presented showing that the reaction occurs along with etching of the silica glass, presumably caused by HF created during the reaction or in previous reactions. The methods of destroying PFAS are especially effective for treating relatively concentrated solutions such as those commonly encountered in AFFF waste stock and cleanup near fire-fighting training sites, as well as concentrated waste solutions from industrial sites involving the manufacture or application of PFAS.
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Patent Agency Ranking
公开(公告)号：CA3128396A1
公开(公告)日：2020-08-13
申请号：CA3128396
申请日：2020-02-10
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： KALTENBERG ELIZA M , PALA FRANCO , DASU KAVITHA , GRIESEMER FRED , WESTLAKE BRADLEY , NANES GEORGE
Abstract: Methods of passively sampling PFAS in the environment, PFAS sorbents, apparatus and systems (apparatus plus conditions) for sampling groundwater, porewater, and surface water are described.
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公开(公告)号：AU2020218373B2
公开(公告)日：2025-01-23
申请号：AU2020218373
申请日：2020-02-10
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： KALTENBERG ELIZA M , PALA FRANCO , DASU KAVITHA , GRIESEMER FRED , WESTLAKE BRADLEY , NANES GEORGE
Abstract: Methods of passively sampling PFAS in the environment, PFAS sorbents, apparatus and systems (apparatus plus conditions) for sampling groundwater, porewater, and surface water are described.
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公开(公告)号：AU2020218373A1
公开(公告)日：2021-08-19
申请号：AU2020218373
申请日：2020-02-10
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： KALTENBERG ELIZA M , PALA FRANCO , DASU KAVITHA , GRIESEMER FRED , WESTLAKE BRADLEY , NANES GEORGE
Abstract: Methods of passively sampling PFAS in the environment, PFAS sorbents, apparatus and systems (apparatus plus conditions) for sampling groundwater, porewater, and surface water are described.
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公开(公告)号：CA3141768A1
公开(公告)日：2020-12-30
申请号：CA3141768
申请日：2020-06-29
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： ELLIS JEFFREY , DEJARME LINDY E , DASU KAVITHA , SIRABIAN RUSSELL R , DINDAL AMY , HEINTZ AMY , GARBARK DAN , BRYANT NATHAN , TALLARICO JOHN , CASCIANO JOSEPH , WINECKI SLAWOMIR , HOLLEY DAVID , JAMES JOSHUA , BROWN KEITH , HENDRY DOUG , ARGUMEDO DARWIN , FRANK AARON , MILLER MICHAEL M , SCHEITLIN CHRISTOPHER GORDON
Abstract: Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water can be concentrated and prepared for destruction in a pretreatment phase. Following annihilation of the PFAS in supercritical conditions to levels below 5 parts per trillion (ppt), the water effluent can be used to recover heat, returned to sub-critical conditions, and then released back into the environment.
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公开(公告)号：CA3133644A1
公开(公告)日：2020-10-01
申请号：CA3133644
申请日：2020-03-25
Applicant: BATTELLE MEMORIAL INSTITUTE
Inventor： JAMES RYAN R , DASU KAVITHA , SIRIWARDENA DINUSHA , PALA FRANCO , IERY RAMONA DARLINGTON
Abstract: The invention provides methods for regenerating activated carbon that have been used in absorbing per- and polyfluoroalkyl substances (PFAS) in aqueous solution. In these methods, the activated carbon is treated with a solution of base in alcohol, which has been found to impart superior properties to the activated carbon.
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