Low-Temperature Ware Wash Detergent for Scale-Free Cleaning
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Solution Overview
Problem
Conventional ware wash detergents, especially those used in institutional and commercial settings with hard water, face challenges with scale build-up due to high alkalinity and elevated temperatures, leading to aesthetic issues and energy inefficiencies, and there is a need for phosphorus-free alternatives that effectively reduce scale formation without using phosphates or NTA, which are environmentally and safety concerns.
Innovation Solution
Phosphorus-free detergent compositions comprising aminocarboxylates, water conditioning polymers, and alkalinity sources, formulated to operate at low temperatures (120°F to 140°F), which reduce or eliminate scale build-up on treated surfaces without surfactants, chelants, or sequestrants, utilizing aminocarboxylates like methylglycinediacetic acid and water conditioning polymers like polycarboxylates to inhibit scale formation synergistically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional alkaline detergents are used in hard water, then cleaning efficacy is improved, but scale build-up increases
Solution Approach 1:
The invention changes the chemical parameters of the detergent by replacing phosphates with alternative builders and adjusting the alkalinity source composition. This allows the detergent to maintain high pH for effective cleaning while preventing calcium carbonate precipitation that causes scale build-up.
Solution Approach 2:
The detergent comprises a composite system of multiple alkalinity sources (sodium carbonate, sodium bicarbonate, potassium carbonate) combined with specific builders and water conditioning agents. This composite formulation achieves both cleaning efficacy and scale prevention that cannot be obtained with single ingredients.
2Reliability
If elevated temperatures are used for washing, then cleaning performance is improved, but energy consumption increases
Solution Approach 1:
The invention modifies the chemical composition parameters to enable effective cleaning at lower temperatures. By incorporating enzymes, surfactants, and optimized builder systems, the detergent maintains cleaning performance at temperatures below conventional standards, thereby reducing energy consumption for water heating.
3Reliability
If phosphates are used as sequestrants, then scale control is improved, but environmental safety deteriorates
Solution Approach 1:
The invention extracts and removes phosphates from the detergent formulation, replacing them with environmentally safe alternative builders such as sodium carbonate, sodium bicarbonate, and potassium carbonate. This elimination maintains scale control functionality while removing the environmental harm associated with phosphate discharge.
Solution Approach 2:
The invention uses readily available, biodegradable alkalinity sources that can be easily replaced and do not persist in the environment like phosphates. These short-living, naturally decomposing materials provide scale control during use but do not cause long-term environmental damage.
4Reliability
If NTA is used as a binding agent, then scale prevention is improved, but safety deteriorates due to carcinogenic concerns
Solution Approach 1:
The invention extracts and eliminates NTA (nitrilotriacetic acid) from the formulation, replacing it with safe alternatives such as citric acid, gluconic acid, or their salts. These replacement agents provide comparable scale prevention through chelation of calcium ions without the carcinogenic concerns associated with NTA.
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 compositions effectively prevent scale formation on treated surfaces at low temperatures, providing a safer and more environmentally friendly option while maintaining cleaning efficacy, reducing energy consumption, and eliminating the need for separate detergency agents.
Implementation Method 1
phosphorus-free detergent compositions which replace phosphate and/or other phosphorus containing detergent materials... use of chelating agents and/or threshold agents for use with high alkaline detergent compositions because of their ability to solubilize metal salts and/or prevent water hardness from scaling
Implementation Method 2
water conditioning polymers like polycarboxylates to inhibit scale formation synergistically... beneficially reduce scale build-up
Implementation Method 3
chelating agents and/or threshold agents for use with high alkaline detergent compositions because of their ability to solubilize metal salts and/or prevent water hardness from scaling
Data Source
AI summary
Phosphorus-free detergent compositions are provided. Detergent compositions including an aminocarboxylate, water conditioning agent, source of alkalinity and water beneficially do not require the use of additional surfactants and/or polymers to provide suitable detergency and prevent scale build-up on treated surfaces. The detergent compositions are used with a sanitizer to employ the phosphorus-free detergent compositions for use as low temperature ware wash detergents that beneficially reduce scale build-up. Methods of employing the phosphorus-free detergent compositions are also provided.