Battelle Memorial Institute

Revive Environmental Technology, LLC

Lindy E Dejarme

Kavitha Dasu

Slawomir Winecki

Jeffrey L Ellis

Darwin Argumedo

David Arthur Holley

Joshua James

Joseph Casciano

Christopher Gordon Scheitlin

Aaron Frank

Michael M Miller

Dan Garbark

Nathan Bryant

Doug Hendry

John Tallarico

Keith E Brown

Keith Brown

Russel R Sirabian

Russell R Sirabian

Amy M Heintz

Thomas D Haubert

James A Prescott

John P Tallarico

Andrew Sweeney

Krista I A Smith

Christopher F Buurma

Matthew Vaughan

Amy Dindal

An autonomous toilet may include a waste receptacle having a receptacle opening, a seat extending at least partially around the receptacle opening, the seat being configured to support a user of the autonomous toilet, a plurality of driven wheels configured to urge the autonomous toilet across a surface, one or more sensors configured to sense one or more conditions of a surrounding environment, and a controller communicatively coupled to the one or more sensors and the plurality of driven wheels.

Autonomous waste collection

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.

Destruction of PFAS via an oxidation process and apparatus suitable for transportation to contaminated sites

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.

Destruction of PFAS in the presence of silica

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Columbus, OH, United States of America

Lindy E Dejarme