Journal article
Flocculation and Flotation to Recover Protein-Enriched Biomasses from Shrimp Boiling and Peeling Process Waters: A Case Study
A novel integrated process for the recovery of protein-enriched biomasses from shrimp boiling water (SBW) and shrimp peeling water (SPW) was investigated by combining flocculation (F) and dissolved air flotation (DAF) into an F-DAF process. Alginate and carrageenan were used as flocculants. It was found that the protein yield from SPW and SBW in the F-DAF process was 68-97% and 26-45%, respectively.
This led to a reduction in protein content of the influent SBW and SPW (12.4 and 1.4 g/L, respectively) by up to 76% and 85%, resulting in outlets with 2.9 and 0.2 g/L protein, respectively. Further, the F-DAF recovery process concentrated the proteins of SBW and SPW up to 7 and 29 times, respectively, thus, generating a protein-enriched biomass.
After spray drying, biomass from SBW had up to 61% proteins, and out of the total amino acids, up to 47% were essential ones. Further, the spray dried powder contained up to 23% total lipids, 2.7% long chained n-3 polyunsaturated fatty acids and 49.7 mg/g total astaxanthin. The studied F-DAF recovery system can thus be successfully used for recovering nutrients from process waters generated during the production of peeled shrimps.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2020 |
Pages: | 9660-9668 |
ISSN: | 21680485 |
Types: | Journal article |
DOI: | 10.1021/acssuschemeng.0c01154 |
ORCIDs: | Sørensen, Ann-Dorit Moltke and 0000-0001-9530-8507 |
Alginate Biomass Carrageenan Circular economy Protein recovery SDG 12 - Responsible Consumption and Production SDG 8 - Decent Work and Economic Growth Shrimp processing Wastewater