Filtration body using layered double hydroxide and method for manufacturing said filtration body
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Solution Overview
Problem
Conventional filtration bodies using layered double hydroxides suffer from non-uniform distribution and surface coverage by binders, leading to low filtration efficiency and increased resistance.
Innovation Solution
A filtration body is created using thermally fusible fibers as carriers, with layered double hydroxide granules of high specific surface area, produced by applying pressure and drying under controlled conditions, ensuring uniform distribution and preventing binder coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a binder is blended with layered double hydroxide powder for molding, then the structural integrity of the filtration body is improved, but the surface of the layered double hydroxide is covered with the binder, deteriorating its properties
Solution Approach 1:
The invention extracts and eliminates the binder component from the filtration body structure. Instead of using a binder to hold the layered double hydroxide particles together, the particles are directly fixed to a support structure through thermal fusion, removing the harmful binder substance that covers and degrades the LDH surface properties.
Solution Approach 2:
The invention introduces a support structure (such as a mesh or fibrous substrate) as an intermediary between the layered double hydroxide particles and the filtration medium. This support provides mechanical strength and structural integrity while allowing the LDH particles to maintain their surface properties and functionality, acting as a mediator that fulfills the structural role without compromising the chemical properties.
2Ease of manufacture
If conventional molding methods are used for layered double hydroxide, then the filtration body can be manufactured, but the distribution of layered double hydroxide becomes non-uniform, concentrating in the lower part
Solution Approach 1:
The invention applies preliminary action by pre-fixing the layered double hydroxide particles to the support structure before the actual filtration process. Through thermal fusion or other fixation methods applied in advance, the particles are uniformly distributed and secured on the support, preventing subsequent settling or concentration in specific areas during operation.
Solution Approach 2:
The invention utilizes parameter changes, specifically temperature variations through thermal fusion, to control the distribution and fixation of layered double hydroxide particles. By controlling the heating parameters, the particles can be uniformly distributed and fixed on the support structure, achieving both ease of manufacture and uniform distribution.
3Stability of the object's composition
If the surface of layered double hydroxide is covered with binder, then the filtration body structure is stabilized, but the filtration efficiency deteriorates
Solution Approach 1:
The invention extracts and removes the binder substance that covers the layered double hydroxide surface. By eliminating the binder and using direct thermal fusion to the support structure, the LDH surface remains exposed and accessible, maintaining its chemical properties and filtration efficiency while still achieving structural stability through the support framework.
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 achieves uniform distribution of layered double hydroxides, reducing filtration resistance and maintaining their properties, thereby enhancing filtration efficiency.
Implementation Method 1
a filtration body in which a thermally fusible fiber serves as a carrier, and fibers or particles of activated carbon are attached to the surface of the fiber that has been fused by heating
Implementation Method 2
applying a predetermined pressure to a material containing a layered double hydroxide and water to remove moisture
Implementation Method 3
drying under conditions having a temperature of 90°C or more and 110°C or less
Data Source
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AI summary
An object is to provide a filtration body capable of uniformizing the distribution of a layered double hydroxide in the filtration body and also preventing the surface of the layered double hydroxide from being covered with a binder or the like, thereby making it possible to improve the conventional filtration efficiency, and also a method for producing the same. The filtration body of the present invention is characterized by being formed of a layered double hydroxide having a crystallite size of 20 nm or less carried on a carrier including a thermally fusible fiber.