Mesoporous Activated Carbon for Selective Pollutant Adsorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies for removing pollutants such as endocrine disrupting chemicals, pharmaceutical active compounds, perfluoroalkyl and polyfluoroalkyl substances, and acidic gases from fluids are limited by non-selectivity, efficiency dependence on pollutant properties and environmental pH, high costs, and high energy consumption.
Innovation Solution
Activated carbon with a surface comprising 45% or greater mesoporous pores, optimized nitrogen content, and specific surface area for enhanced adsorption efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If activated carbon with traditional pore structure is used, then adsorption capacity is limited, but increasing micropore volume reduces accessibility of larger pollutant molecules
Solution Approach 1:
The patent applies porous materials by developing activated carbon with a specific pore size distribution featuring 45% or greater mesoporous pores (2-50 nm diameter). This porous structure enables larger pollutant molecules to access the internal surface area while maintaining high adsorption capacity, resolving the contradiction between quantity of substance and adaptability.
2Ease of operation
If adsorption is used to remove pollutants, then operational simplicity is achieved, but efficiency is dependent on pollutant properties and environmental pH
Solution Approach 1:
The patent applies local quality by creating activated carbon with non-uniform pore size distribution (45% or greater mesoporous pores) and specific surface chemistry. Different pore sizes are optimized for different pollutant types, allowing the single material to effectively adsorb diverse pollutants including EDCs, PhACs, PFAS, and acidic gases regardless of their specific properties or environmental pH conditions.
3Quantity of substance
If advanced oxidation is used to eliminate pollutants, then partial elimination is achieved, but high energy consumption and complex equipment are required
Solution Approach 1:
The patent applies this principle by using activated carbon as a simple, inexpensive adsorbent material that can be easily deployed and replaced. Unlike advanced oxidation requiring expensive equipment and high energy input, the activated carbon provides effective pollutant removal through its optimized pore structure, operating without complex machinery or substantial energy consumption.
4Quantity of substance
If biodegradation membrane filtration is used, then incomplete removal is achieved, but the process is slow and microbes adapt to pharmaceuticals reducing effectiveness
Solution Approach 1:
The patent replaces the biological system (microbes) with a physical-chemical system (activated carbon adsorption). Instead of relying on slow biodegradation processes where microbes adapt to pharmaceuticals, the optimized activated carbon with 45% or greater mesoporous pores provides rapid, consistent adsorption of pollutants including EDCs, PhACs, and other contaminants, significantly improving productivity while maintaining complete removal effectiveness.
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 activated carbon effectively removes a wide range of pollutants by optimizing pore structure and surface chemistry, improving adsorption capacity and selectivity, and reducing operational costs.
Implementation Method 1
Adsorbents such as zeolite, celite, cellulosic aerogel and modified mineral clay are regularly used in the removal of pollutants from a fluid. However, these adsorbents have limitations in terms of their effectiveness and stability.
Data Source
AI summary
The present invention relates to activated carbon. In particular, the present invention relates to activated carbon, wherein the surface of the activated carbon comprises pores, wherein 45 % or greater of the total volume of pores are mesoporous pores.