Ammonia Binding via Carbon Dioxide Microbubbles
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Solution Overview
Problem
Current methods for capturing and binding ammonia from agricultural and industrial waste streams, such as those using sulfuric acid, pose safety hazards and are not sustainable, while biological methods are limited in scalability and efficiency.
Innovation Solution
A method utilizing carbon dioxide to bind ammonia in both liquid and gaseous states, forming ammonium bicarbonate, ammonium carbonate, and ammonium carbamate, which involves dissolving ammonia in a solvent with carbon dioxide microbubbles at ambient temperature and pressure, allowing for efficient storage and transport of the ammonia-bound solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sulfuric acid is used to capture and bind ammonia, then ammonia binding efficiency is improved, but safety hazards and sustainability are worsened
Solution Approach 1:
The invention changes the chemical parameters by replacing sulfuric acid with carbon dioxide, transforming the binding reaction from a highly exothermic acid-base reaction to a milder carbonation reaction. This parameter change maintains ammonia binding efficiency while eliminating the safety hazards associated with handling concentrated sulfuric acid.
Solution Approach 2:
The invention uses carbon dioxide, a readily available and inexpensive gas, as the binding agent instead of expensive and hazardous sulfuric acid. The process creates stable ammonium carbonate/bicarbonate products that can be easily handled and transported, replacing the need for hazardous chemical reagents.
2Productivity
If sulfuric acid is used to capture and bind ammonia, then ammonia binding efficiency is improved, but sustainability is worsened
Solution Approach 1:
The invention utilizes carbon dioxide, which is already present in the waste stream or can be easily obtained from atmospheric sources, as the binding agent. This self-service approach eliminates the need for importing hazardous chemicals like sulfuric acid, making the system more sustainable and environmentally friendly while maintaining binding efficiency.
Solution Approach 2:
The invention converts carbon dioxide, a greenhouse gas that is often released into the atmosphere, into a useful binding agent for ammonia capture. This transforms a harmful emission into a beneficial resource, simultaneously addressing climate change concerns and ammonia pollution while maintaining binding efficiency.
3Object-affected harmful factors
If biological gas scrubbers are used to process ammonia, then environmental impact is reduced, but scalability and efficiency are worsened
Solution Approach 1:
The invention replaces the complex biological system (nitrifying bacteria in trickling filtration) with a simple chemical reaction system using carbon dioxide. This substitution eliminates the need for maintaining biological conditions, aeration systems, and bacterial cultures, thereby improving scalability and efficiency while still reducing environmental impact through ammonia capture.
Solution Approach 2:
The invention changes the operational parameters from biological conditions (requiring specific temperature, moisture, and oxygen levels for bacterial activity) to simple chemical reaction conditions (ambient temperature and pressure). This parameter change dramatically improves scalability and efficiency while maintaining environmental benefits.
4Object-affected harmful factors
If carbon dioxide is used to bind ammonia at ambient temperature and pressure, then safety and sustainability are improved, but binding efficiency may be worsened
Solution Approach 1:
The invention enhances the binding efficiency by introducing carbon dioxide as microbubbles into the ammonia-containing solution. This dimensional change from gas phase to dispersed liquid phase dramatically increases the surface area and contact time between carbon dioxide and ammonia, ensuring efficient binding even at ambient temperature and pressure.
Solution Approach 2:
The invention utilizes the phase transition of carbon dioxide from gas to dissolved state in the liquid solution. By controlling the dissolution and reaction of CO2 in water to form carbonic acid, which then reacts with ammonia, the process achieves efficient binding under mild conditions without requiring extreme temperature or pressure changes.
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
This approach effectively reduces hazardous ammonia emissions from agricultural and industrial sources, providing a safer, more sustainable alternative by converting ammonia into stable salts that can be easily stored and reused, while avoiding the use of hazardous chemicals and maintaining operational efficiency.
Implementation Method 1
A method for binding hazardous ammonia in both liquid and gaseous states using carbon dioxide
Implementation Method 2
bind the ammonia or ammonium ions to produce ammonium bicarbonate (NH4HCO3), ammonium carbonate ((NH4)2CO3) and ammonium carbamate (H2NCOONH4)
Implementation Method 3
dissolving ammonia in a solvent with carbon dioxide microbubbles at ambient temperature and pressure
Data Source
AI summary
A method for binding hazardous ammonia in both liquid or gaseous states from organic waste streams using carbon dioxide at ambient temperature and under ambient pressure to reduce ammonia emissions from farming or industrial operations. The method entraps a quantity of ammonia in an ammonia solution by reacting the quantity of ammonia with a quantity of carbon dioxide within a primary reaction vessel to form an ammonia-bound solution at ambient temperature and under ambient pressure. The ammonia-bound solution is able to be stored or transported for use in future chemical processes.