Polyphenol-Impregnated Anion Exchange Resins for Uranium Removal

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Solution Overview

Problem

Existing anion exchange resins have lower selectivity for uranium, making them less effective in applications with low uranium concentrations in aqueous solutions, and polyphenol-bound polymer media are not durable due to leaching issues.

Innovation Solution

Impregnating anion exchange resins, particularly weak base resins, with polyphenol using plant extracts like cranberry or blackcurrant juice to enhance uranium binding selectivity and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If polyphenol is used to bind to polymer adsorbent, then uranium removal selectivity is improved, but polyphenol leaches quickly from the media

Engineering Contradiction:

Improveuranium removal selectivityVSAvoidpolyphenol binding durability

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The patent combines polyphenol with anion exchange resin to create a composite material that integrates the high uranium selectivity of polyphenol with the durable binding properties of the resin matrix. This composite structure prevents polyphenol leaching while maintaining uranium removal effectiveness.

Inventive Principle:

Principle #40Composite materials

2Reliability

If traditional anion exchange resin is used, then durability and regenerability are improved, but uranium selectivity decreases

Engineering Contradiction:

Improveresin durabilityVSAvoiduranium removal selectivity

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent merges the advantages of two different materials: the durable and regenerable properties of anion exchange resin are combined with the high uranium selectivity of polyphenol. The polyphenol is impregnated into the resin matrix, creating a material that exhibits both durability and high selectivity for uranium removal.

Inventive Principle:

Principle #5Merging (Combining)

3Manufacturing precision

If polyphenol is used for uranium remediation, then uranium binding capability is improved, but binding to durable media is difficult

Engineering Contradiction:

Improveuranium binding capabilityVSAvoidpolyphenol media binding

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The anion exchange resin acts as an intermediary carrier that facilitates the binding of polyphenol to a durable media. The resin matrix provides the structural support and binding sites that hold polyphenol in place, overcoming the difficulty of directly binding polyphenol to durable substrates while maintaining uranium removal capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 impregnated resins demonstrate improved uranium removal efficiency and strong polyphenol retention, outperforming traditional anion exchange resins and polymer adsorbents, especially in solutions with low uranium concentrations and high salinity.

Implementation Method 1

polyphenol has the ability to remove uranium from the environment

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 2

Anion exchange resins are known for use in removing uranium from water

Methodology Applied

Scientific EffectAnion exchange: Ion Exchange

Data Source

PatentUS20150336812A1Removal of uranium from water

Publication Date: 2015.11.26 ROHM & HAAS CO

AI summary

A method for removing uranium from an uranium-containing aqueous solution having a salinity of at least 0.5 ppt, comprise the step of passing the solution through a bed of anion exchange resin impregnated with polyphenol.