Fluorinated Ionic Polymer Networks for Selective Removal From Water
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Solution Overview
Problem
Current technologies struggle to effectively and selectively remove polyfluorinated alkyl compounds from water due to their low affinity and high concentration of non-fluorinated species, leading to saturation and residual contamination.
Innovation Solution
A fluorinated ionic polymer network that utilizes both fluorophilic sorption and targeted ion exchange to selectively absorb and sequester polyfluorinated alkyl compounds, leveraging their fluorophilicity and tunable charged functional groups for efficient removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adsorbents are used to remove polyfluorinated alkyl compounds from water, then the removal process can be performed, but the removal efficiency is low due to saturation by non-fluorinated species and residual contamination remains
Solution Approach 1:
The polymer network incorporates fluorinated functional groups at specific locations within the polymer structure, creating localized regions with high affinity for polyfluorinated alkyl compounds. This local fluorophilic character enables selective binding of target contaminants while ignoring non-fluorinated species, resolving the contradiction between removal efficiency and residual contamination.
Solution Approach 2:
The invention uses a composite polymer network combining hydrophilic polymer chains with integrated fluorinated functional groups. This composite structure provides both the solubility needed for water interaction and the specific fluorophilic binding sites for selective contaminant removal, achieving high removal efficiency without saturation by non-fluorinated compounds.
2Productivity
If conventional adsorbents are used, then the adsorption process can proceed, but the adsorbent becomes saturated quickly due to high concentration of non-fluorinated species
Solution Approach 1:
By concentrating fluorinated functional groups at specific sites within the polymer network, the invention creates high-capacity binding regions that selectively capture polyfluorinated alkyl compounds. This localized approach prevents saturation by non-fluorinated species, maintaining high adsorption capacity over extended periods and reducing regeneration frequency.
Solution Approach 2:
The invention modifies the chemical parameters of the adsorbent by incorporating fluorinated functional groups with specific affinity characteristics. This parameter change enables the adsorbent to discriminate between fluorinated and non-fluorinated compounds, maintaining productive adsorption of target contaminants while resisting saturation from background non-fluorinated species.
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 method achieves high removal efficiency, exceeding 99% of polyfluorinated alkyl compounds from water, with the polymer network being regenerable and capable of multiple cycles, addressing the limitations of existing technologies.
Implementation Method 1
A fluorinated ionic polymer network that utilizes both fluorophilic sorption and targeted ion exchange to selectively absorb and sequester polyfluorinated alkyl compounds, leveraging their fluorophilicity
Implementation Method 2
A fluorinated ionic polymer network that utilizes both fluorophilic sorption and targeted ion exchange to selectively absorb and sequester polyfluorinated alkyl compounds, leveraging their fluorophilicity and tunable charged functional groups for efficient removal
Data Source
AI summary
Disclosed herein are materials and methods related to the removal of a polyfluorinated alkyl compound from water. The materials contain both fluorine and an ion, which materials can be used as a network to remove the polyfluorinated alkyl compound from water.