Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis
The increase in environmental consciousness and stricter regulations has motivated industries to seek sustainable technologies that allow valorising wastewaters, contributing to the profitability of overall processes. Canning industry effluents, namely sardine cooking wastewater, have a high organic...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
|
| Series: | Clean Technologies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2571-8797/4/2/16 |
| _version_ | 1797488720401661952 |
|---|---|
| author | Maria João Pereira Oceane Grosjean Manuela Pintado Carla Brazinha João Crespo |
| author_facet | Maria João Pereira Oceane Grosjean Manuela Pintado Carla Brazinha João Crespo |
| author_sort | Maria João Pereira |
| collection | DOAJ |
| description | The increase in environmental consciousness and stricter regulations has motivated industries to seek sustainable technologies that allow valorising wastewaters, contributing to the profitability of overall processes. Canning industry effluents, namely sardine cooking wastewater, have a high organic matter load, containing proteins and lipids. Their untreated discharge has a negative environmental impact and an economic cost. This work aims to design an integrated process that creates value with the costly sardine cooking wastewater effluent. The research strategy followed evaluates coagulation/flocculation technologies as pre-treatment of the sardine cooking wastewater followed by reverse osmosis. Two different added-value products were obtained: a solid fraction rich in proteins, lipids (above 20%), and aromas that might be used for feed/pet/aquaculture applications and, from the processing of the resultant aqueous stream by reverse osmosis, a natural flavouring additive, which can be applied in food/feed. Additionally, the permeate from reverse osmosis presents a much lower organic load than the original raw material, which may be reused in the overall process (e.g., as water for washings) or discharged at a lower cost, with environmental benefits and economic savings. |
| first_indexed | 2024-03-10T00:06:21Z |
| format | Article |
| id | doaj.art-8355827b5096469799f1399750d57ee3 |
| institution | Directory Open Access Journal |
| issn | 2571-8797 |
| language | English |
| last_indexed | 2024-03-10T00:06:21Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Clean Technologies |
| spelling | doaj.art-8355827b5096469799f1399750d57ee32023-11-23T16:07:34ZengMDPI AGClean Technologies2571-87972022-04-014227629510.3390/cleantechnol4020016Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse OsmosisMaria João Pereira0Oceane Grosjean1Manuela Pintado2Carla Brazinha3João Crespo4LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, PortugalPolytech Nantes, GBP Department, Nantes University, 44306 Nantes, FranceCBQF/Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, PortugalLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, PortugalLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, PortugalThe increase in environmental consciousness and stricter regulations has motivated industries to seek sustainable technologies that allow valorising wastewaters, contributing to the profitability of overall processes. Canning industry effluents, namely sardine cooking wastewater, have a high organic matter load, containing proteins and lipids. Their untreated discharge has a negative environmental impact and an economic cost. This work aims to design an integrated process that creates value with the costly sardine cooking wastewater effluent. The research strategy followed evaluates coagulation/flocculation technologies as pre-treatment of the sardine cooking wastewater followed by reverse osmosis. Two different added-value products were obtained: a solid fraction rich in proteins, lipids (above 20%), and aromas that might be used for feed/pet/aquaculture applications and, from the processing of the resultant aqueous stream by reverse osmosis, a natural flavouring additive, which can be applied in food/feed. Additionally, the permeate from reverse osmosis presents a much lower organic load than the original raw material, which may be reused in the overall process (e.g., as water for washings) or discharged at a lower cost, with environmental benefits and economic savings.https://www.mdpi.com/2571-8797/4/2/16reverse osmosiscoagulation/flocculationaroma recoverysardine cooking wastewaters |
| spellingShingle | Maria João Pereira Oceane Grosjean Manuela Pintado Carla Brazinha João Crespo Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis Clean Technologies reverse osmosis coagulation/flocculation aroma recovery sardine cooking wastewaters |
| title | Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis |
| title_full | Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis |
| title_fullStr | Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis |
| title_full_unstemmed | Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis |
| title_short | Clean Technologies for Production of Valuable Fractions from Sardine Cooking Wastewaters: An Integrated Process of Flocculation and Reverse Osmosis |
| title_sort | clean technologies for production of valuable fractions from sardine cooking wastewaters an integrated process of flocculation and reverse osmosis |
| topic | reverse osmosis coagulation/flocculation aroma recovery sardine cooking wastewaters |
| url | https://www.mdpi.com/2571-8797/4/2/16 |
| work_keys_str_mv | AT mariajoaopereira cleantechnologiesforproductionofvaluablefractionsfromsardinecookingwastewatersanintegratedprocessofflocculationandreverseosmosis AT oceanegrosjean cleantechnologiesforproductionofvaluablefractionsfromsardinecookingwastewatersanintegratedprocessofflocculationandreverseosmosis AT manuelapintado cleantechnologiesforproductionofvaluablefractionsfromsardinecookingwastewatersanintegratedprocessofflocculationandreverseosmosis AT carlabrazinha cleantechnologiesforproductionofvaluablefractionsfromsardinecookingwastewatersanintegratedprocessofflocculationandreverseosmosis AT joaocrespo cleantechnologiesforproductionofvaluablefractionsfromsardinecookingwastewatersanintegratedprocessofflocculationandreverseosmosis |