Decoupled Adsorption Reactor for PFAS Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current photocatalytic reactor designs for removing per- and poly-fluorinated alkyl substances (PFAS) face challenges in scaling and efficiency due to the coupling of adsorption and decomposition processes, which limits the ability to optimize mass transfer surface area and illumination time, leading to inefficiencies and difficulties in resource allocation.
Innovation Solution
A decoupled reactor design that separates the adsorption and regeneration processes into two distinct systems, allowing for independent optimization of each step and improved fluid mechanics, enabling efficient removal and decomposition of PFAS into non-toxic byproducts like carbon dioxide, sulfate, and fluoride ions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If adsorption and decomposition processes are coupled in a single reactor system, then device complexity is reduced, but mass transfer surface area and illumination time cannot be independently optimized, leading to reduced productivity
Solution Approach 1:
The patent divides the coupled adsorption-decomposition process into two separate reactor systems: a first reactor for adsorption and a second reactor for decomposition. This segmentation allows independent optimization of mass transfer surface area in the adsorption reactor and illumination time in the decomposition reactor, thereby resolving the contradiction between device complexity and productivity.
2Device complexity
If adsorption and decomposition are performed in the same system, then the system structure is simpler, but resource allocation becomes less flexible, reducing ease of operation
Solution Approach 1:
By segmenting the process into separate adsorption and decomposition reactors, the patent enables flexible resource allocation. Each reactor can be independently operated, maintained, and optimized based on specific process requirements, improving ease of operation despite increased structural complexity.
3Ease of manufacture
If a single reactor is used for both adsorption and decomposition, then the device is easier to manufacture, but scaling becomes difficult due to coupled process constraints
Solution Approach 1:
The patent employs segmentation by creating separate modular reactor units for adsorption and decomposition. This modularity facilitates scaling, as additional reactor units can be added or configured based on treatment capacity requirements without redesigning the entire system, thereby improving adaptability and versatility.
4Volume of stationary object
If adsorption and decomposition are coupled, then the process is more compact, but independent optimization of process parameters is prevented, reducing productivity
Solution Approach 1:
By segmenting the process into separate reactors, the patent enables independent optimization of process parameters such as adsorbent dosage, contact time, light intensity, and reaction conditions. This independent optimization significantly enhances productivity and decomposition rate, accepting the trade-off of increased system volume.
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
This approach enhances the scalability and efficiency of PFAS removal, allowing for flexible resource allocation and optimized process conditions, resulting in effective treatment of PFAS in water and aqueous firefighting foam concentrates with reduced environmental impact.
Implementation Method 1
a first system for removing one or more target compounds from a fluid, said first system comprising adsorbent particles
Implementation Method 2
a second system for regenerating said adsorbent particles... efficient removal and decomposition of PFAS into non-toxic byproducts like carbon dioxide, sulfate, and fluoride ions
Data Source
AI summary
The present disclosure relates to a fluid treatment apparatus. The fluid treatment apparatus includes a first system for removing one or more target compounds from a fluid, said first system comprising adsorbent particles; a second system for regenerating said adsorbent particles; a first connector between said first system and said second system, said first connector configured to transfer adsorbent particles from said first system to said second system; and a second connector between said first system and said second system, said second connector configured to release of adsorbent particles from said second system, wherein said first system and said second system are decoupled. The present disclosure further relates to a system comprising one or more fluid treatment apparatus described herein. Also described herein are methods for treating fluid and a system comprising the methods for treating fluid described herein.