Journal article
Life cycle assessment of intensified processes towards circular economy: Omega-3 production from waste fish oil
Universidad Autonoma de San Luis Potosi1
KT Consortium, Department of Chemical and Biochemical Engineering, Technical University of Denmark2
PROSYS - Process and Systems Engineering Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark3
Department of Chemical and Biochemical Engineering, Technical University of Denmark4
Fish oil is a nutritious product, mainly due its omega-3 polyunsaturated fatty acids (ω-3 PUFA) content that is attractive for its health benefits. Fish oil is discarded as a waste in many seafood industries, due to the lack of recovery processes to refine the oil in a lucrative and sustainable manner.
This work tackles this by proposing a framework to integrate the economic, environmental and social aspects with the process design decisions of a crude fish oil refinery. The application of the framework is highlighted through production of ω-3 PUFA concentrates from waste oil of a tuna processing plant in Mexico.
This is addressed by formulation and solution of a multi-objective optimization problem including intensified processing options in a superstructure. The resulting Mixed Integer Non-Linear Programing problem is solved with lexicographic and ε-constraint methods. The solutions in the form of a Pareto front are subject to benchmarking with Life Cycle Assessment (LCA) methodology.
The optimal configuration consists of an intensified process with an LCA score of 458.94 and the donation 12.64 % of the ω-3 production to local communities without compromising the process profitability. Waste fish oil valorization is proven significant to achieve a circular economy model for the seafood industry.
Language: | English |
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Year: | 2020 |
Pages: | 108171 |
ISSN: | 18733204 and 02552701 |
Types: | Journal article |
DOI: | 10.1016/j.cep.2020.108171 |
ORCIDs: | 0000-0003-1681-0449 , 0000-0002-1680-2396 and Mansouri, Seyed Soheil |