Enzymatic Carbon Dioxide Generation for Aqueous Insect Repulsion
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Solution Overview
Problem
Current insecticides and larvacides used in aqueous systems are highly toxic and have significant eco-toxicological and toxicological impacts, necessitating the development of low-impact methods for controlling insects, eggs, and larvae.
Innovation Solution
An eco-compatible method involving the dispersion of inorganic compounds capable of releasing carbon dioxide, catalyzed by carbonic anhydrase enzymes, which creates a continuous effervescence for mechanical repulsion and biocide effects, reducing the presence of infesting insects, eggs, and larvae.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional insecticides and larvacides are used to control infesting insects, then the effectiveness in eliminating targeted organisms is improved, but the toxicological and eco-toxicological impact on the environment and humans worsens
Solution Approach 1:
The patent converts the harmful effect of carbon dioxide (which can be toxic at high concentrations) into a beneficial control mechanism by using it to create foam that physically blocks insect access to water. The carbon dioxide is generated from safe carbonate/bicarbonate salts through enzyme catalysis, transforming a potentially harmful gas into a useful tool for insect control without the toxic side effects of conventional insecticides.
Solution Approach 2:
The patent introduces carbonic anhydrase enzyme as an intermediary catalyst that enables the conversion of carbonate salts to carbon dioxide under mild conditions. This enzyme mediator allows the system to generate the active carbon dioxide gas from safe, non-toxic precursor salts, bridging the gap between safe materials and effective insect control without requiring toxic chemicals.
2Reliability
If chemical insecticides are used to eliminate infesting organisms, then the direct effect on targeted organisms is improved, but the persistence in the environment and accumulation in the food chain worsens
Solution Approach 1:
The patent employs carbon dioxide as a transient, non-persistent control agent that acts on insects when present but does not accumulate in the environment. The gas is generated on-demand from carbonate salts and naturally dissipates, providing effective insect control without long-term environmental persistence or food chain accumulation that characterizes conventional chemical insecticides.
Solution Approach 2:
The patent changes the physical state and delivery mechanism of the active agent from persistent liquid chemical insecticides to transient gas phase carbon dioxide. This parameter change from liquid to gas phase, delivered through foam, enables effective insect contact while ensuring rapid environmental dissipation and no long-term persistence.
3Reliability
If larvacides are dispersed in open water systems to control egg and larva development, then the control of infesting agents is improved, but the toxicological and eco-toxicological effects worsen
Solution Approach 1:
The patent converts carbon dioxide, which can be harmful to aquatic life at high concentrations, into a beneficial control mechanism by delivering it through foam that primarily affects aerial insects and their eggs on the water surface. The foam delivery system ensures that carbon dioxide is concentrated where it repels insects rather than harming aquatic larvae, transforming a potential harm into a selective benefit.
4Reliability
If foam forming materials are used to create physical barriers on water surface, then the repulsion effect on insects is improved, but the complexity of the system worsens
Solution Approach 1:
The patent employs a self-service system where carbonic anhydrase enzyme automatically catalyzes the conversion of carbonate salts to carbon dioxide in the presence of water, generating foam without requiring external energy input or complex equipment. The enzyme continuously maintains the foam structure as long as carbonate salts and water are present, providing self-sustaining insect repulsion with minimal system complexity.
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 method achieves effective repulsion and biocide effects with minimal environmental and toxicological impact, reducing egg deposition and larval development, while being environmentally friendly and non-toxic.
Implementation Method 1
comprising enzymes adapted to catalyze a reaction of said one or more compounds that leads to the formation of carbon dioxide
Implementation Method 2
enzymes adapted to catalyze a reaction of said one or more inorganic compounds capable of releasing carbon dioxide that leads to the formation of carbon dioxide
Implementation Method 3
creates a continuous effervescence for mechanical repulsion and biocide effects
Data Source
AI summary
Method for preventing and controlling organisms that infest aqueous systems in which one or more organic or inorganic compounds capable of releasing gas are present, comprising the step of dispersing on and/or in the aqueous mass a preparation comprising enzymes adapted to catalyze a reaction of the one or more compounds that leads to the formation of gas.