Compositions and processes for remediating environmental contaminants
AssigneesWoodard & Curran, Inc., BROWN UNIVERSITY, A Rohde Island Nonprofit Corporation Formed And Existing Under Legislative Charter
InventorsJames D. Bryant, Lucas A. Hellerich, Michael A. Apfelbaum, Kurt Pennell, Kate Manz
Life of this patent
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Abstract
Compositions and process, along with systems using those compositions and processes are described herein for remediation of environmental contamination, including organic compound contamination of soil and ground water, including polyfluoroalkyl substances.
Claims21
A system for remediating a contaminant in the environment, the system comprising:
- (a) a first stage adapted to decompose at least a portion of the contaminant, the first stage comprising a process comprising (1) providing an oxidant comprising one or more persulfate salts, or one or more peroxide salts, or any combination thereof;
- (2) activating the oxidant with an activating agent;
- and (3) contacting the contaminant with the activated oxidant whereby at least a portion of the contaminant is decomposed;
- (b) a two-part second stage adapted to adsorb at least a portion of the contaminant, the second stage comprising a process comprising contacting the contaminant with (1) a buffering compound adapted to increase the pH of at least a portion of the environment containing the contaminant;
- and (2) an adsorbent comprising activated carbon, whereby at least a portion of the contaminant is absorbed or adsorbed;
- wherein the first stage is separated from the second stage;
- and
- wherein the buffering compound is included in a third stage between the first and second stages, or optionally combined with the adsorbent in the second stage.
A composition configured for remediating an organic contaminant in the environment/groundwater, the composition comprising a persulfate salt and one or more activating agents.
-16. (canceled)
Dependencies are inferred from the claim text.