Chlorine Dioxide Cleaner with Phosphate for Metal Sanitization
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Solution Overview
Problem
Chlorine dioxide solutions, particularly those formed with alkali metal chlorites and acids, are corrosive to metals, limiting their use for sanitizing and cleaning metal objects without causing harm to the substrates.
Innovation Solution
A chlorine dioxide solution is developed that incorporates phosphate to reduce corrosivity, formed using various precursors such as liquid solutions, tablets, or solid bodies, which when combined with water, produce a mixture capable of cleaning and sanitizing while minimizing metal corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chlorine dioxide solution is used for sanitizing and cleaning, then antimicrobial effectiveness is improved, but metal corrosion increases
Solution Approach 1:
Phosphate serves as a mediator substance that reduces the corrosive interaction between chlorine dioxide solution and metal surfaces. The phosphate forms protective complexes with metal ions, preventing direct corrosive attack while allowing chlorine dioxide to maintain its antimicrobial effectiveness.
Solution Approach 2:
The invention modifies the chemical composition parameters of the chlorine dioxide solution by adding phosphate at specific concentrations (0.1-10%). This parameter change alters the solution's chemical behavior toward metals, reducing corrosion potential while preserving the oxidizing antimicrobial action of chlorine dioxide.
2Reliability
If high concentration of chlorine dioxide is used, then sanitizing effectiveness is improved, but corrosivity to metals increases
Solution Approach 1:
Phosphate acts as a protective intermediary that intercepts corrosive interactions between high-concentration chlorine dioxide and metal surfaces. The phosphate molecules form protective layers or complexes that prevent the strong oxidizing agents from directly attacking metal structures.
Solution Approach 2:
The invention creates a composite chemical system combining chlorine dioxide with phosphate in specific ratios. This composite formulation leverages the synergistic effect where phosphate moderates the aggressive properties of high-concentration chlorine dioxide while preserving its sanitizing capability.
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 addition of phosphate to the chlorine dioxide solution inhibits metal corrosion, making it less corrosive than traditional solutions, allowing for effective sanitizing and cleaning of metal surfaces without damaging them, with a pH range that balances effectiveness and safety.
Implementation Method 1
The corrosiveness of the prior art solutions is lessened due to the addition of phosphate to the composition
Implementation Method 2
The pH of the sodium chlorite solution is reduced from about 13 to about 8 using the acidic solution. Chlorite anion is thus converted to chlorine dioxide via the reaction below
Data Source
AI summary
This invention relates to an improved chlorine dioxide solution or liquid mixture containing a phosphate and, as well, as to a composition for forming the chlorine dioxide and phosphate liquid mixture. This improved chlorine dioxide solution is used to clean and/or sanitize without causing corrosion. The corrosion nature of the chlorine dioxide solution is lessened due to the addition of phosphate to the composition.