We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Single-Cell Protein Production from Industrial Off-Gas through Acetate: Techno-Economic Analysis for a Coupled Fermentation Approach.
- Authors
Vlaeminck, Elodie; Uitterhaegen, Evelien; Quataert, Koen; Delmulle, Tom; Kontovas, Stoilas-Stylianos; Misailidis, Nikiforos; Ferreira, Rafael G.; Petrides, Demetri; De Winter, Karel; Soetaert, Wim K.
- Abstract
Third-generation (3G) biorefineries harnessing industrial off-gases have received significant attention in the transition towards a sustainable circular economy. However, uncertainties surrounding their techno-economic feasibility are hampering widespread commercialization to date. This study investigates the production of single-cell protein (SCP), a sustainable alternative food and feed protein, from steel mill off-gas through an efficient coupled fermentation approach utilizing acetate as an intermediate. A comprehensive model that comprises both the gas-to-acetate and the acetate-to-SCP fermentation processes, as well as gas pretreatment and downstream processing (DSP) operations, was developed and used to perform a techno-economic analysis (TEA). Sensitivity analyses demonstrated that significant cost reductions can be achieved by the process intensification of the gas-to-acetate fermentation. As such, an increase in the acetate concentration to 45 g/L and productivity to 4 g/L/h could lead to a potential cost reduction from 4.15 to 2.78 USD/kg. In addition, the influence of the production scale and other economic considerations towards the commercialization of off-gas-based SCPs are discussed. Conclusively, this research sheds light on the practical viability of a coupled fermentation process for SCP production by identifying key cost-influencing factors and providing targets for further optimization of the acetate platform, fostering sustainable and economically feasible bio-based innovations.
- Subjects
FERMENTATION; CIRCULAR economy; RUMEN fermentation; COST control; STEEL mills; PROTEINS; ACETATES
- Publication
Fermentation (Basel), 2023, Vol 9, Issue 8, p771
- ISSN
2311-5637
- Publication type
Article
- DOI
10.3390/fermentation9080771