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Utilizing CO2 in industrial off-gas for microalgae cultivation: considerations and solutions
Jacob G Comley1, John A Scott1, Corey A Laamanen1
1School of Engineering and Computer Science, Laurentian University, Sudbury, Canada.
Critical Reviews in Biotechnology
|July 27, 2023
Summary
Microalgae can treat industrial off-gas, reducing emissions and producing valuable products. Challenges like acid gases and metals require solutions such as strain selection and bioreactor optimization for effective cultivation.
Area of Science:
- Biotechnology
- Environmental Science
- Chemical Engineering
Background:
- Industrial off-gases, rich in carbon dioxide (CO2), present a significant emissions challenge.
- Microalgae cultivation offers a potential solution for CO2 mitigation and valuable biomass production.
- Off-gases often contain inhibitory compounds like nitrogen oxides (NOx), sulfur dioxide (SO2), and metals, hindering microalgae growth.
Purpose of the Study:
- To review the current state of microalgae utilization for treating industrial off-gases.
- To discuss the challenges and potential solutions for effective microalgae cultivation using off-gas.
- To present experimental results and outcomes related to off-gas application in microalgae systems.
Main Methods:
- Literature review of microalgae experiments utilizing industrial off-gas.
- Analysis of various conditions and their impact on microalgae growth and productivity.
- Identification and discussion of proposed solutions to overcome off-gas related limitations.
Main Results:
- Industrial off-gas sources vary in CO2 concentration and inhibitory component profiles.
- Successful microalgae cultivation with off-gas requires addressing limitations from acid gases and metals.
- Strategies like bioprospecting, genetic modification, and optimized bioreactor design are crucial.
Conclusions:
- Microalgae show promise for industrial CO2 mitigation and product generation.
- Overcoming inhibitory factors in off-gas is key to realizing this potential.
- Further research into strain selection and process optimization is necessary for large-scale application.
Keywords:
Microalgaeacidificationcarbon dioxideindustrial off-gasnitrogen oxidesstrain selectionsulfur dioxideMore Related Videos
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