Coffee Water Ionization Using Ion Exchange and Mineral Dosing
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Solution Overview
Problem
The concentration of calcium and magnesium ions and alkalinity in water used for beverage extraction can negatively impact flavor and taste, leading to undesirable characteristics such as chalkiness in coffee and altering the flavor profile of beverages.
Innovation Solution
A water ionization apparatus and method that introduces specific ionic species through reaction vessels and dosing mechanisms to control the concentrations of magnesium, calcium, bicarbonate, and carbonate ions in the water, using packed beds of solid chemicals and ion exchange resins to achieve desired ion levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If calcium and magnesium ions are added to water for beverage extraction, then desirable compounds can be extracted from ingredients, but the flavor becomes chalky and undesirable
Solution Approach 1:
The system precisely controls and adjusts the concentration parameters of calcium and magnesium ions in water, maintaining them within optimal ranges (e.g., 5-50 ppm for calcium, 5-30 ppm for magnesium) to achieve desirable extraction while preventing chalky flavor development
2Reliability
If alkaline species are present in water to neutralize organic acids in beverages, then pH balance is improved, but the flavor profile is negatively altered
Solution Approach 1:
The system precisely controls alkalinity parameters by adjusting bicarbonate and carbonate ion concentrations (e.g., maintaining alkalinity between 20-80 ppm), achieving reliable pH balance while preventing negative flavor alterations through optimized parameter selection
3Object-affected harmful factors
If ion exchange resins are used to replace sulfate ions with bicarbonate ions, then flavor quality is improved, but device complexity increases
Solution Approach 1:
The system employs ion exchange resins as intermediary materials that automatically facilitate the replacement of sulfate ions with bicarbonate ions in the water stream, improving flavor quality without requiring complex active control mechanisms
Solution Approach 2:
The ion exchange resins perform the ion replacement function autonomously as water passes through the system, eliminating the need for external energy input or complex control systems while maintaining improved flavor quality
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
Produces ionized water with controlled ion concentrations, enhancing beverage flavor consistency and quality by maintaining optimal ionic balances.
Implementation Method 1
The first reaction vessel comprises a packed bed of solid calcium carbonate configured to dissolve calcium and carbonate ions into the source water
Implementation Method 2
The second reaction vessel comprises a packed bed of solid magnesium sulfate configured to dissolve magnesium and sulfate ions into the source water
Implementation Method 3
replacing sulfate ions from the saturated magnesium sulfate stream with bicarbonate ions utilizing a strongly basic anion exchange resin
Data Source
AI summary
A method for producing an ionized water product for coffee comprises the steps of introducing source water to an ionization system, passing the source water through one or more reaction vessels, wherein one or more ionic species are introduced into the source water, and combining products of one or more reaction vessels to produce the ionized water product having between about 10 ppm to about 40 ppm magnesium ions, about 10 ppm to about 40 ppm calcium ions, and about 40 ppm to about 90 ppm total of bicarbonate and carbonate ions.