Membrane-Mediated Alkali Enrichment for CO2 Sequestration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for sequestering carbon dioxide (CO2) from industrial sources are inefficient and do not effectively address the global urgency of reducing atmospheric CO2 levels, which contribute to global warming and ocean acidification.
Innovation Solution
The implementation of a membrane-mediated alkali enrichment protocol that increases the alkalinity of a liquid, allowing for the conversion of CO2 into bicarbonate and carbonate ions, which can be used to precipitate minerals and sequester CO2, utilizing osmotic pressure and ionic concentration gradients to facilitate the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional CO2 sequestration methods are used, then CO2 can be stored, but the process is inefficient and does not effectively reduce atmospheric CO2 levels
Solution Approach 1:
The patent changes the chemical parameters of the liquid medium by enriching it with alkali substances (such as hydroxides or carbonates) to increase its CO2 absorption capacity. This parameter change allows the liquid to more effectively convert CO2 into bicarbonate and carbonate ions, thereby improving sequestration efficiency while potentially reducing energy consumption compared to conventional thermal methods
Solution Approach 2:
The patent introduces an intermediary alkali-enriched liquid medium that facilitates the conversion of CO2 into stable carbonate forms. This intermediary substance acts as a catalyst or mediator in the chemical reaction between CO2 and the liquid, enabling more efficient sequestration without requiring excessive energy input
2Productivity
If alkali enrichment protocol is implemented to increase alkalinity, then CO2 conversion to bicarbonate and carbonate ions is enhanced, but the process complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-enriching the liquid medium with alkali substances before CO2 contact. This preliminary preparation of the liquid (adding hydroxides, carbonates, or adjusting pH to alkaline levels) ensures that when CO2 is introduced, the conversion to bicarbonate and carbonate ions occurs rapidly and efficiently, reducing the need for complex real-time control systems
Solution Approach 2:
The alkali-enriched liquid serves multiple functions: it absorbs CO2, provides the alkaline environment necessary for conversion to carbonate ions, and can be regenerated or reused. This multi-functionality reduces process complexity by consolidating several steps into a single versatile medium
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 method effectively captures and sequesters CO2 by converting it into stable carbonate forms, providing a long-term storage solution that prevents CO2 from re-entering the atmosphere, thus addressing the environmental impacts of CO2 emissions.
Implementation Method 1
utilizing osmotic pressure and ionic concentration gradients to facilitate the process
Implementation Method 2
membrane-mediated alkali enrichment protocol that increases the alkalinity of a liquid
Implementation Method 3
allowing for the conversion of CO2 into bicarbonate and carbonate ions
Implementation Method 4
which can be used to precipitate minerals and sequester CO2
Data Source
AI summary
Methods of sequestering CO2 from a gaseous source of CO2 are provided. Aspects of the methods include employing an alkali enrichment protocol, such as a membrane mediated alkali enrichment protocol, in a CO2 sequestration protocol. Also provided are systems for practicing the methods.