Modular Graphene Oxide Microbial Filter for High Efficiency
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Solution Overview
Problem
Current fluid filters are ineffective in filtering out microbial contaminants, as they require small pore sizes that lead to high filtration pressure and inefficient flow rates, failing to capture microorganisms like bacteria efficiently.
Innovation Solution
A modular graphene oxide-based microbial fluid filter with a scaffold and compression spacer tool that allows correct compression pressure and sealing, eliminating the need for sub-micrometer pore filtering while achieving 99.99% microbial filtration efficiency and maintaining flow rates comparable to existing filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sub-micrometer pore size membranes are used to filter microorganisms, then microbial filtration efficiency is improved, but filtration pressure increases and flow rate decreases
Solution Approach 1:
The patent employs graphene oxide as a porous filtering medium with unique properties that enable effective microbial filtration without requiring sub-micrometer pore sizes. The graphene oxide structure provides sufficient pore architecture to capture microorganisms while maintaining larger effective pore dimensions that prevent excessive pressure buildup and preserve adequate flow rates.
Solution Approach 2:
The filter combines graphene oxide with a scaffold structure to create a composite filtering medium. This composite approach integrates the beneficial properties of graphene oxide (high surface area, chemical stability, and controlled porosity) with the mechanical support of the scaffold, achieving both high microbial filtration efficiency and acceptable pressure characteristics.
2Reliability
If sub-micrometer pore size membranes are used to filter microorganisms, then microbial filtration efficiency is improved, but filtration flow rate decreases
Solution Approach 1:
Graphene oxide provides a porous structure that balances filtration capability with flow performance. The material's inherent porosity and surface properties enable it to intercept microorganisms effectively while its controlled pore distribution maintains sufficient flow pathways, preventing the severe flow rate reductions associated with conventional sub-micrometer membranes.
Solution Approach 2:
The patent transitions from traditional two-dimensional membrane filtration to a three-dimensional scaffold-based filtering structure. This dimensional change increases the available filtration surface area and creates multiple flow pathways, allowing microorganisms to be captured throughout the filter volume rather than at a single plane, thereby maintaining higher flow rates while achieving effective filtration.
3Productivity
If larger pore sizes are used to maintain flow rate, then filtration flow rate is improved, but ability to filter microorganisms decreases
Solution Approach 1:
Graphene oxide's unique porous structure provides a high surface-area-to-volume ratio with controlled pore sizes that can be optimized for microbial capture. The material's porous architecture allows tuning of pore dimensions to achieve the right balance between flow rate and filtration efficiency, capturing microorganisms through adsorption and physical entrapment mechanisms rather than relying solely on mechanical sieving.
Solution Approach 2:
The patent utilizes the ability to modify graphene oxide's physical and chemical parameters (such as oxidation level, layer number, and pore size distribution) to optimize filter performance. By adjusting these parameters, the filter can be tailored to achieve both adequate flow rates and high microbial filtration efficiency without being constrained by fixed pore size limitations.
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 solution provides high microbial filtration efficiency while reducing pressure drop, allowing for efficient fluid flow and extended filter lifespan, capable of filtering microorganisms and particulates without the need for sub-micrometer pores.
Implementation Method 1
graphene oxide, a scaffold comprising graphene oxide... has a microbial filtration efficiency of up to 99.99% and the ability to filter particulates
Implementation Method 2
a scaffold comprising graphene oxide... does not require a sub-micrometer pore filtering medium
Data Source
AI summary
The present invention relates to a reclamation and recycling process for graphene oxide, a scaffold comprising graphene oxide, a modular graphene oxide-based microbial fluid filter and a filter tool that allows the correct compression pressure of a modular filtration cartridge, and prevents internal leakage along the internal wall of the filter and thus provides correct sealing of the filter. Such modular graphene oxide-based microbial fluid filter does not require a sub-micrometer pore filtering medium, yet has a microbial filtration efficiency of up to 99.99% and the ability to filter particulates while still providing the filtration flow rates of current filters that do not employ a sub-micrometer pore filtering medium.