Microporous Activated Carbon Toxin Separator
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Solution Overview
Problem
Current methods for removing toxins bound to proteins from biological fluids, such as those in patients with renal disease, are inefficient and can lead to the removal of essential proteins, while existing activated carbon solutions either fail to effectively reduce toxins like indoxyl sulfate or are limited in application.
Innovation Solution
A toxin separator using activated carbon with specific pore volume and surface area characteristics, allowing for the selective adsorption of toxins bound to proteins while leaving essential proteins intact, integrated into a blood purification system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If activated carbon with large pore volume is used to adsorb toxins, then adsorption ability is improved, but essential proteins may be removed along with toxins
Solution Approach 1:
The invention utilizes activated carbon with specifically controlled pore size distribution (predominantly micropores with diameter ≤3 nm) to achieve selective adsorption. The microporous structure allows small toxin molecules to enter and be adsorbed while excluding larger protein molecules, thus improving toxin removal efficiency without causing significant protein loss.
Solution Approach 2:
The invention applies local quality by creating a non-uniform pore size distribution within the activated carbon, with a specific focus on micropores (≤3 nm). This localized pore structure optimization enables differential permeability - allowing small toxins to pass and be adsorbed while blocking larger proteins, thereby resolving the contradiction between adsorption efficiency and protein preservation.
2Measurement precision
If porous separation membrane with small pore size is used to remove low molecular weight toxins, then filtration efficiency is improved, but high molecular weight toxins cannot be removed
Solution Approach 1:
The invention changes the key parameter of pore size from the conventional focus on larger pores to predominantly micropores (≤3 nm). This parameter change enables the activated carbon to adsorb both low molecular weight toxins (through diffusion into micropores) and high molecular weight toxins (through surface adsorption on micropore entrances), thereby expanding the toxin removal range while maintaining high filtration efficiency.
Solution Approach 2:
The invention employs a composite approach by combining activated carbon material with specifically engineered micropore structure. This composite material design integrates the high surface area and adsorption capacity of activated carbon with the size-selective properties of microporous structure, enabling simultaneous removal of toxins across a wide molecular weight range.
3Quantity of substance
If spherical activated carbon with large pore diameter (5-1000 nm) is used, then adsorption of high molecular weight toxins is improved, but micropore utilization is insufficient
Solution Approach 1:
The invention fundamentally changes the pore size parameter from the conventional 5-1000 nm range to predominantly ≤3 nm micropores. This parameter change optimizes the activated carbon for adsorbing smaller toxin molecules while increasing the surface area available for adsorption, thereby improving both adsorption capacity and molecular weight selectivity.
Solution Approach 2:
The invention emphasizes the use of microporous activated carbon material with controlled pore size distribution. By focusing on micropores (≤3 nm) rather than larger mesopores or macropores, the material achieves higher surface area density and more effective adsorption of small toxin molecules, resolving the contradiction between adsorption capacity and pore size control.
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
Efficiently separates toxins bound to proteins from biological fluids, reducing harmful toxicity while preserving necessary proteins, thereby enhancing the effectiveness of blood purification processes.
Implementation Method 1
activated carbon having a pore volume of pores having a pore diameter from 1.4 to 35 nm... capable of selectively separating toxin present in a biological fluid by binding to protein from the toxin and the protein
Data Source
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AI summary
Provided are a toxin separator and the like which are capable of selectively separating toxin present in a biological fluid by binding to protein, from the toxin and the protein. The toxin separator of the present invention also includes activated carbon of which a pore volume of pores having a pore diameter from 1.4 to 35 nm as measured by a nitrogen adsorption method is 0.06 cm3/g or greater.