Ammonium Looping with Membrane Absorber and Distributed Stripper for Enhanced Algae Growth
- Univ. of Kentucky, Lexington, KY (United States)
The objective of this project is to conduct a comprehensive investigation to develop and demonstrate a practical, reliable, and cost-effective integrated carbon dioxide (CO2) capture and biofixation process for algae production. This process utilizes a chemical hindered ammonium solution (NH4OH) as both a capture reagent and an algae nutrient. The membrane absorber employed in the system ensured minimal ammonia (NH3) emissions in the treated flue gas. Additionally, distributed solar-energy powered strippers located near the bioreactor modules facilitate solvent regeneration and enable just-in-time delivery of CO2 and NH3 to the algae, thereby minimizing the pH swing for enhanced productivity. The proposed membrane CO2 absorber and solar-powered stripper is designed and seamlessly integrated with the existing 0.1 MWth bench-scale CO2 capture system (CCS) and open raceway ponds (ORPs) at the University of Kentucky Center for Applied Energy (UK CAER) campus. The entire integrated process has undergone construction, operation, testing, and analysis. Furthermore, technology has been evaluated with a techno-economic analysis (TEA), technology gap analysis (TGA), life-cycle analysis (LCA), and a technology maturation plan (TMP). This project was performed within two budget periods, 54 months in duration. There are fourteen Project Tasks, twelve Milestones and four Success Criteria.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States); Univ. of Kentucky, Lexington, KY (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy and Carbon Management (FECM)
- DOE Contract Number:
- FE0031921
- OSTI ID:
- 2569124
- Report Number(s):
- DOE-UKIDEA--31921-1; 3200003651
- Country of Publication:
- United States
- Language:
- English
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