CO2-derived Carbon Fiber via Algae and Fischer-Tropsch
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Solution Overview
Problem
Current methods for converting CO2 into usable materials, such as fuels and building materials, are inefficient and costly, and existing carbon fiber production is too energy-intensive to be climate-relevant, while the need for efficient CO2 sequestration and utilization in materials production is urgent to mitigate global warming.
Innovation Solution
A combination of algae-based biomass production and Fischer-Tropsch synthesis processes to produce polyacrylonitrile for carbon fiber production, where CO2 is sequestered from both atmospheric and industrial sources, and converted into acrylonitrile through methanol and propene pathways, optimizing the use of resources and reducing emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional carbon fiber production methods are used, then carbon fibers can be produced, but the energy consumption is too high to be climate-relevant
Solution Approach 1:
The invention changes the chemical composition parameters of the precursor material by incorporating recycled carbon content (5-95% by weight) from post-consumer carbon fiber waste, thereby reducing the energy-intensive virgin polymer production while maintaining sufficient mechanical properties for carbon fiber reinforcement applications
Solution Approach 2:
The invention recovers and reuses carbon fiber waste materials that would otherwise be discarded, transforming them into valuable precursor components for new carbon fiber reinforced plastics, thereby closing the material loop and reducing the energy consumption associated with producing virgin carbon fiber materials
2Quantity of substance
If CO2 concentration is increased in the atmosphere, then more CO2 is available for conversion into materials, but global warming increases
Solution Approach 1:
The invention converts harmful CO2 emissions from industrial processes and atmospheric sources into valuable carbon-containing precursor materials for carbon fiber production, thereby transforming a greenhouse gas that causes global warming into a useful resource that reduces atmospheric CO2 concentration
Solution Approach 2:
The invention serves multiple functions simultaneously: it sequesters CO2 from the atmosphere and industrial sources, produces carbon-containing precursors for carbon fiber reinforcement, and reduces greenhouse gas emissions, thereby addressing both material production needs and climate change mitigation in a single integrated process
3Productivity
If algae biomass production is used for CO2 sequestration, then CO2 binding efficiency is high, but the area consumption is relatively large
Solution Approach 1:
The invention uses algae biomass as an intermediary organism that efficiently captures CO2 from the atmosphere and industrial flue gases, converting it into carbon-containing organic compounds that can be processed into precursor materials for carbon fiber production, thereby bridging the gap between atmospheric CO2 and useful materials
4Productivity
If Fischer-Tropsch synthesis is used to produce fuels from CO2, then regenerative fuel production is achieved, but the process complexity and cost increase
Solution Approach 1:
The invention extracts and isolates carbon-containing compounds from algae biomass through filtration and separation processes, obtaining concentrated carbon sources that can be directly used for precursor production, thereby simplifying the overall process by removing unnecessary intermediate steps compared to full Fischer-Tropsch synthesis pathways
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 enhances the efficiency and reduces the cost of carbon fiber production, enabling its widespread adoption in both industrialized and developing regions, promoting climate change mitigation by utilizing CO2 in a regenerative and sustainable manner.
Implementation Method 1
The large-scale production of algae biomass is recommended for economic reasons in technically simple open cultivation basins, which are low-cost industrially scale. An alternative to the extraction of natural CO2 is the power generation, gasification or other energetic utilization of natural algae mass and in particular the sequestration of the CO2 from their flue gases.
Implementation Method 2
The state of the art describes methods by which fuels such as biodiesel or kerosene are obtained either via the production of biomass such as, for example, algae growth with sequestered or natural CO2, or that these industry-relevant substances are recovered with the aid of the Fischer-Tropsch synthesis from sequestered CO2 and hydrogen.
Implementation Method 3
from which then with the help of carbonisation (through pyrolysis) tensile and especially very rigid carbon fibers are produced, which have a solid state of aggregation over millions of years.
Implementation Method 4
Both methods also have different starting materials and different valuable by-products, in particular, for example, if the hydrogen obtained by electrolysis releases oxygen as a by-product.
Data Source
AI summary
The invention describes carbon fibers which are produced on the basis of different process chains from CO2. These include routes through natural resources such as algal biomass to produce carbon fiber precursors such as PAN from CO2, as well as the purely synthetic route via the Fischer-Tropsch synthesis, which is also used to make CO2 carbon fiber precursors. In this way, CO2 from anthropogenic origin is to be converted into a solid aggregate state of carbon fiber, which can be disposed of at the end of its life cycle, after being used as highly valuable building material for industry and man, for the construction of buildings and vehicles. These processes produce by-products such as biodiesel and nutrients that generate added value. The production volumes of the resulting substances should be controllable by combining the methods presented here. Some of these processes alone have no long-term climate relevance because of the high costs, but in the initial phase of such a development with the help of carbon dioxide certificates or socio-political necessities they are able to quickly show that carbon fiber building materials can be produced which by themselves are made from CO2 and at least have the quality to be used in the construction sector and for example are feasible to replace steel, in that the paradigm of todays material production being CO2-positive, can be turned into the opposite. If the processes—which have the disadvantage of large-area consumption on the one hand and the of the lack of energy efficiency in the longer term on the other—can be coupled, they have the potential to support each other. By combining the methods, land use and costs can be adjusted to current regional economic performance based on the material paradigm of the future of carbon-negative production of carbon fibers, also depending on the current evolution of CO2 emission allowance prices. The invention has the desired effect in climate policy that high-tech technology transfer can take place into the currently disadvantaged regions of the world, which promotes the economic performance of today's disadvantaged regions and in particular creates the urgently needed jobs in these regions.