Biomass Absorbent Gas Separation and Enzyme Digestibility
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Solution Overview
Problem
Current gas separation methods are energy- and capital-intensive, and there is a need for more efficient techniques that utilize renewable biomass materials for separating gas components, particularly water-soluble and water-insoluble gases, while also enhancing the enzyme digestibility of biomass for biofuel production.
Innovation Solution
A method involving a biomass material with at least 10 wt% water, where a feed gas stream containing a water-soluble and a water-insoluble gas component is contacted within a vessel, allowing the water-soluble gas to be absorbed by the biomass, with the option to retain it to increase enzyme digestibility, and using a purge gas stream to recover the absorbed gas, optimizing pressure and temperature conditions for efficient separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional gas separation methods (distillation, membrane separation, gas-liquid absorption) are used, then gas components can be separated, but the process becomes energy-intensive and capital-intensive
Solution Approach 1:
The patent changes the physical-chemical parameters of the separation system by using biomass materials with specific moisture content (at least 10 wt% water) and controlling temperature and pressure conditions. This allows the biomass to selectively absorb water-soluble gases while maintaining structural integrity, achieving separation without the high energy input required by conventional distillation or membrane processes
Solution Approach 2:
The patent employs biomass materials (such as agricultural waste, forestry residues, or other renewable organic materials) as the separation medium instead of expensive conventional adsorbents or membranes. These biomass materials can be readily disposed of or regenerated after use, reducing both capital investment and operational costs while maintaining effective gas separation
2Loss of energy
If conventional gas separation methods are used, then gas components can be separated, but capital costs increase due to expensive equipment and infrastructure
Solution Approach 1:
The patent replaces expensive conventional separation media (activated carbon, zeolites, specialized membranes) with inexpensive biomass materials that are readily available from agricultural and forestry operations. This substitution dramatically reduces both the capital cost of equipment and the operational cost of consumables
Solution Approach 2:
The biomass material inherently possesses the functional properties needed for gas separation through its natural moisture content and surface characteristics. No additional processing, coating, or activation is required to make it functional, eliminating the need for complex manufacturing infrastructure and reducing capital investment
3Productivity
If water-soluble gas is absorbed by biomass material, then gas separation is achieved, but the biomass enzyme digestibility needs to be enhanced for biofuel production
Solution Approach 1:
The patent applies temperature and pressure changes to simultaneously achieve gas separation and biomass pretreatment. By controlling the absorption conditions, the biomass structure is modified to enhance enzyme accessibility, thereby improving digestibility for subsequent biofuel production while maintaining gas separation efficiency
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 achieves efficient separation of gas components with reduced energy and capital costs, utilizing renewable biomass and enhancing its enzyme digestibility for biofuel production, while effectively recovering the separated gases.
Implementation Method 1
allowing the water-soluble gas to be absorbed by the biomass
Data Source
AI summary
This invention provides methods for separating gas components from a gas stream. The methods are particularly advantageous in that an environmentally friendly biomass absorbent is used to assist in the separation process. The invention is particularly suited to separate water soluble gas components from a gas stream. The water soluble gas components can be used to condition the biomass for additional use, such as a conditioned feed for a biofuel. In general, the conditioned biomass will have increased enzyme digestibility, making the conditioned biomass highly suitable as feedstock for biofuel production.