Multilayer Adsorbent Filtering Item for Odour Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies are ineffective in efficiently mitigating offensive odours from farm animal breeding facilities, particularly those generated by volatile organic compounds like ammonia, hydrogen sulphide, and methane, which are not harmful to human health but cause significant nuisance.
Innovation Solution
A multilayer adsorbent filtering item is developed using a porous support of non-woven polyethylene terephthalate fibre felt impregnated with 40% activated vegetable carbon, coated with a silicone film and permanganate salt, allowing for effective adsorption of odour compounds through molecular lamination, enhancing surface area utilization and biodegradability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional porous adsorbent systems are used, then the structure is simple and ease of manufacture is improved, but the odour elimination efficiency deteriorates
Solution Approach 1:
The patent employs a composite material structure consisting of a porous support (non-woven polyethylene terephthalate fibre felt) impregnated with activated vegetable carbon (40% loading). This composite design combines the structural advantages of the porous support with the high adsorption capacity of activated carbon, achieving superior odour elimination efficiency while maintaining manufacturing feasibility through impregnation processes.
Solution Approach 2:
The patent utilizes porous materials at multiple levels: the non-woven polyethylene terephthalate fibre felt provides a macro-porous structure for support and airflow, while the activated vegetable carbon contributes micro-porous structure for enhanced surface area and adsorption capacity. This hierarchical porosity design significantly improves odour elimination efficiency compared to traditional dense adsorbents.
2Productivity
If activated carbon impregnation is increased to improve adsorption capacity, then the odour elimination efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent optimizes the activated carbon loading parameter to 40% by weight, which represents a carefully balanced value that achieves high adsorption capacity without excessive manufacturing complexity. This parameter optimization ensures sufficient odour elimination efficiency while maintaining practical manufacturability through standard impregnation techniques.
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 multilayer adsorbent filtering item achieves a significant reduction in odour concentration, with average decreases of 93% in odour intensity, outperforming traditional porous adsorbent systems and demonstrating quick action in reducing odour compounds from both liquid and solid animal waste.
Implementation Method 1
a porous support consisting of a non-woven polyethylene terephthalate (PET) fibre felt impregnated with 40% activated vegetable carbon
Implementation Method 2
fulfils the function of continuously degrading compounds responsible for offensive odours
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a multilayer absorbent filtering item comprising: a first layer of a porous activated carbon support disposed on a nonwoven polyester-fibre felt; a second layer, where the surface of the first layer is bonded to a film of polymer and low-foam surfactants (mixture A); and a third layer, where the surface of the second layer is bonded to a film comprising an active ingredient and a low-foam surfactant in an acid aqueous medium (mixture B), the top face of said polymer film being bonded to the active ingredient, and the bottom face thereof adhering to the activated carbon, by means of polar and non-polar interactions. Also disclosed are a method for obtaining the multilayer absorbent filtering item and the use of the multilayer absorbent filtering item.