Acetic Acid and EO-PO Surfactant Composition for Apple Snail Eradication
Solution Overview
Problem
Current methods for controlling the invasive apple snail pest are inadequate, as they either lack effectiveness, are not environmentally friendly, or are economically inaccessible, and existing compositions do not utilize a combination of acetic acid and ethoxylated alcohol of the type alkyl polyethylene-polypropylene glycol (EO-PO) effectively.
Innovation Solution
A water-based composition comprising 20-80% acetic acid and 5-20% ethoxylated alcohol of the type alkyl polyethylene-polypropylene glycol (EO-PO) surfactant, which is diluted in paddy field water to concentrations between 0.1 and 1 vol.‰, synergistically affecting the apple snail's shell and internal organs, leading to mortality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If saponins are used to control apple snail population, then the adult snail population is reduced by 80-90%, but the snails recover the following year due to their fertility and the treatment is only temporary
Solution Approach 1:
The patent changes the chemical parameters of the molluscicide by using acetic acid (20-80 vol.%) combined with ethoxylated alcohol surfactant (5-20 vol.%), creating a composition that achieves complete mortality (100%) and prevents population recovery, unlike saponins which only provide temporary reduction
Solution Approach 2:
The patent combines acetic acid with ethoxylated alcohol surfactant (alkyl polyethylene-polypropylene glycol EO-PO) to create a composite composition that synergistically enhances eradication effectiveness, achieving complete snail mortality and preventing population rebound
2Reliability
If strong inorganic acids (H2SO4, HCl, HNO3) are used to eradicate apple snails, then complete mortality is achieved, but the composition is not environmentally friendly
Solution Approach 1:
The patent converts the traditionally harmful strong inorganic acids into a beneficial environmentally-friendly alternative by using acetic acid (a weak organic acid) combined with ethoxylated alcohol surfactant, which achieves the same complete mortality effect without the severe environmental damage associated with strong inorganic acids
Solution Approach 2:
The patent changes the chemical nature of the acid component from strong inorganic acids (H2SO4, HCl, HNO3) to a weak organic acid (acetic acid), maintaining the eradication effectiveness while eliminating the harmful environmental effects
3Reliability
If conventional molluscicides are used to control apple snails, then some population reduction is achieved, but the treatment is economically inaccessible to farmers
Solution Approach 1:
The patent employs inexpensive, readily available materials - acetic acid (common household ingredient) and ethoxylated alcohol surfactant - to create an economically accessible molluscicide that farmers can afford, replacing expensive conventional molluscicides with a cost-effective composition
4Reliability
If existing acid-based compositions are used, then some snail mortality is achieved, but the composition lacks the synergistic effect needed for complete eradication
Solution Approach 1:
The patent creates a composite composition combining acetic acid with ethoxylated alcohol surfactant (alkyl polyethylene-polypropylene glycol EO-PO), where the two components work synergistically to achieve complete snail mortality (100%), whereas acetic acid alone or other acid-based compositions do not achieve complete eradication
Solution Approach 2:
The patent merges acetic acid and ethoxylated alcohol surfactant into a single composition, combining the acid's penetrative and damaging effects with the surfactant's ability to disrupt cell membranes and enhance penetration, creating a synergistic effect that achieves complete eradication
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 composition achieves high mortality rates of apple snails, with 100% mortality observed at optimal concentrations, while being environmentally friendly and economically viable, with a synergistic effect enhancing its efficacy.
Implementation Method 1
it is very possible that the acidity of said acids permeates the shell and exposes the body of the mollusc to the atmosphere by dissolving the calcium carbonate base of said shell
Implementation Method 2
it is very possible that the effect of the non-ionic surfactants is to make the lipid fraction of the mollusc body soluble, damaging the internal organs of the mollusc
Data Source
Figure 1
AI summary
The application relates to a water-based composition comprising a mineral acid (preferably sulphuric acid) or organic acid (preferably acetic acid) and a non-ionic surfactant (preferably nonylphenol 9EO, C8-16 alkyl polyglucoside, or ethylhexyl-EO-PO) and its use for eradicating the apple snail pest.