Formula I Silica Adsorbents for PFAS Water Remediation
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Solution Overview
Problem
Current methods are inadequate for effectively removing per- and polyfluoroalkyl substances (PFAS) from contaminated water supplies, posing health risks due to their persistence in the environment and widespread contamination of drinking water sources.
Innovation Solution
Development of compounds of Formula (I) that selectively bind PFAS contaminants from water, involving specific functional groups and surface modifications on silica particles, allowing for efficient removal and regeneration of the compounds for repeated use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional water treatment methods are used, then general water purification is achieved, but PFAS contaminants cannot be effectively removed
Solution Approach 1:
The patent employs porous silica particles with controlled pore sizes (0.5-2.0 nm) that selectively adsorb PFAS molecules based on size exclusion and surface interactions. The porous structure provides high surface area for contaminant binding while maintaining selectivity for PFAS over other water constituents.
Solution Approach 2:
The invention creates composite adsorbent materials by functionalizing silica surfaces with specific organic groups (e.g., fluorinated alkyl chains, aromatic compounds) that have high affinity for PFAS. This composite approach combines the structural stability of silica with the selective binding properties of organic functional groups.
2Productivity
If adsorbent materials are used for PFAS removal, then contamination is reduced, but the materials require regeneration for repeated use
Solution Approach 1:
The patent utilizes changes in environmental parameters (pH, temperature, ionic strength) to control PFAS adsorption and desorption. By adjusting these parameters, the same adsorbent material can efficiently bind PFAS during treatment and release it during regeneration, enabling multiple use cycles.
Solution Approach 2:
The invention enables recovery of PFAS contaminants from water through adsorption, followed by desorption using elution solutions. This process allows the adsorbent material to be regenerated and reused, while the captured PFAS can be recovered for proper disposal or further processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compounds achieve significant removal of PFAS contaminants, with over 90% reduction in PFAS concentrations from contaminated water, and can be regenerated for multiple cycles, enhancing their practical application in water remediation.
Implementation Method 1
The compound of Formula (I) or a salt thereof may find use in binding perfluoroalkyl substances (PFAS) contaminates from sources of PFAS contaminated water supply
Data Source
AI summary
The present disclosure provides compounds of Formula (I), their methods of preparation, their methods of regeneration of the compound of Formula (I), and their methods of use for binding perfluoroalkyl substances (PFAS) contaminates from sources of PFAS contaminated water.