Algae Biomass Production Using Chitin Nitrogen Source
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Solution Overview
Problem
Current methods for large-scale microbial degradation of chitin require abundant aeration, oxygen, and external carbon sources, making them costly and inefficient for biomass production, and rely on carbon-intensive nitrogen fertilizers, which are not sustainable.
Innovation Solution
A process using chitin as a nitrogen source for growing cyanobacteria or algae, allowing them to produce biomass for various commercial applications without the need for external oxygen or carbon sources, utilizing chitin's natural abundance and reducing carbon footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional nitrogen-based fertilizers are used for biomass production, then growth rate and biomass yield are improved, but carbon footprint and environmental impact increase
Solution Approach 1:
The patent changes the nitrogen source parameter from conventional synthetic fertilizers to chitin, a natural polymer. This parameter change enables biomass production while eliminating the carbon-intensive Haber-Bosch process, thereby reducing carbon footprint while maintaining productivity
Solution Approach 2:
The patent uses chitin, an abundant and inexpensive natural polymer, as a nitrogen source. This disposable, renewable resource replaces expensive and carbon-intensive synthetic fertilizers, providing a sustainable alternative that reduces both cost and environmental impact
2Productivity
If aerobic heterotrophic microorganisms are used to degrade chitin, then chitin degradation and nitrogen release are improved, but oxygen consumption and aeration requirements increase
Solution Approach 1:
The patent employs phototrophic microorganisms that produce their own oxygen through photosynthesis, eliminating the need for external aeration. The system is self-sufficient, generating the oxygen required for chitin degradation internally rather than requiring energy-intensive aeration systems
Solution Approach 2:
The patent replaces the mechanical aeration system with a biological oxygen generation system. Instead of using mechanical means to supply oxygen, the system uses photosynthetic organisms to biologically produce oxygen, substituting a mechanical process with a biological one
3Productivity
If external carbon sources are added to support chitin degradation, then microbial growth and nitrogen release are improved, but process cost and carbon footprint increase
Solution Approach 1:
The patent uses phototrophic microorganisms that produce their own carbon through photosynthesis, eliminating the need for external carbon sources. The system is self-sufficient in carbon, using light energy to fix carbon dioxide and support microbial growth and chitin degradation without adding to carbon footprint
Solution Approach 2:
The patent converts carbon dioxide, which would be a harmful greenhouse gas, into useful biomass through photosynthesis. The microorganisms use CO2 as a carbon source, transforming this harmful emission into a beneficial resource that supports the degradation process
4Reliability
If conventional aeration systems are used for chitin degradation, then oxygen supply is improved, but device complexity and operational cost increase
Solution Approach 1:
The patent eliminates the need for complex aeration systems by using phototrophic microorganisms that self-generate oxygen through photosynthesis. The system requires no external oxygen supply infrastructure, simplifying both device design and operation while ensuring reliable oxygen availability
Solution Approach 2:
The patent extracts the oxygen supply function from the external aeration system and transfers it to the phototrophic microorganisms themselves. This extraction eliminates the need for complex mechanical aeration equipment while maintaining reliable oxygen supply through biological means
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 process enables the efficient production of biomass and commercial products using chitin as a renewable carbon and nitrogen source, reducing costs and environmental impact while eliminating the need for carbon-intensive fertilizers.
Implementation Method 1
cyanobacteria or algae, in pure culture or in the presence of helper heterotrophs or other phototrophs, is grown using a composition comprising chitin as a source of nitrogen
Data Source
AI summary
A process of growing a culture of cyanobacteria or algae using chitin or chitosan as a source of nitrogen for photosynthetic growth is described. This process can be used to remove pollutants from nitrogen-deficient natural waters or wastewaters including buchu mercaptan production wastewater. Biomass that results from photosynthetic growth on chitin can be used, either as whole cells or the isolated components of the cells, for a large variety of commercial purposes.