Patent ID: 11896948
Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
Field: Environmental technology (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A method of treating water containing one or more per- or polyfluoroalkyl substances, the method comprising the steps of:
mixing together a composition of zero-valent iron particles, clay particles, and sand particles to generate a fixed bed filter including the composition;
flowing an amount of water containing one or more per- or polyfluoroalkyl substances through the fixed bed filter including the composition;
during flowing the amount of water through the fixed bed filter, via the zero-valent iron particles of the composition, oxidizing the one or more per- or polyfluoroalkyl substances of the amount of water to generate at least one fluorinated carbon group and an oxidation-reaction-induced byproduct, the oxidation-reaction-induced byproduct including a portion of the one or more per- or polyfluoroalkyl substances, such that the oxidation-reaction-induced byproduct has a length smaller than a length of each of the one or more per- or polyfluoroalkyl substances;
during flowing the amount of water through the fixed bed filter, via a hydrophilic film surrounding the zero-valent iron particles, adsorbing an amount of the one or more per- or polyfluoroalkyl substances of the oxidation-reaction-induced byproduct; and
during flowing the amount of water through the fixed bed filter, via the zero-valent iron particles and the clay particles, adsorbing an amount of the one or more per- or polyfluoroalkyl substances of the oxidation-reaction-induced byproduct,
wherein the zero-valent iron particles, the clay particles, and the sand particles synergistically remove the one or more per- or polyfluoroalkyl substances from the water.