Food By-Product Valorization by Using Plant-Based Coagulants Combined with AOPs for Agro-Industrial Wastewater Treatment
Bibliographic Data
| ID | 15501310 |
|---|---|
| Authors | Rita Beltrão Martins (University of Trás-os-Montes and Alto Douro), Nuno Jorge (0000-0002-3410-2959, University of Trás-os-Montes and Alto Douro), Marco S Lucas (0000-0002-5463-0505, University of Trás-os-Montes and Alto Douro), Anabela Raymundo (0000-0001-5266-1685, University of Lisbon), Ana Barros (0000-0001-5834-6141, University of Trás-os-Montes and Alto Douro), José A Peres (0000-0001-7417-9152, University of Trás-os-Montes and Alto Douro, corresponding author) |
| Year | 2022 |
| Volume | 19 |
| Issue | 7 |
| Pages | 4134-4134 |
| Publication date | 2022-03-31 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph19074134 |
| PMID | 35409817 |
| OpenAlex | W4221020257 |
| Language | EN |
| Citations received | 1 |
| References cited | 40 |
Re-using and adding value to by-products is one of the current focuses of the agri-food industry, following the Sustainable Development Goals of United Nations. In this work, the by-products of four plants, namely chestnut burr, acorn peel, olive leaf, and grape stem were used as coagulants to treat elderberry wastewater (EW), a problematic liquid effluent. EW pre-treatment using these natural coagulants showed promising results after pH and coagulant dosage optimization. However, the decrease in total organic carbon ( TOC ) was not significant, due to the addition of the plant-based natural coagulants which contain carbon content. After this pre-treatment, the photo-Fenton advanced oxidation process was selected, after preliminary assays, to improve the global performance of the EW treatment. Photo-Fenton was also optimized for the parameters of pH, H 2 O 2 , Fe 2+ , and irradiance power, and the best conditions were applied to the EW treatment. Under the best operational conditions defined in the parametric study, the combined results of coagulation-flocculation-decantation (CFD) and photo-Fenton for chestnut burr, acorn peel, olive leaf, and grape stem were, respectively, 90.2, 89.5, 91.5, and 88.7% for TOC removal; 88.7, 82.0, 90.2 and 93.1%, respectively, for turbidity removal; and finally, 40.6, 42.2, 45.3, and 39.1%, respectively, for TSS removal. As a final remark, it is possible to suggest that plant-based coagulants, combined with photo-Fenton, can be a promising strategy for EW treatment that simultaneously enables valorization by adding value back to food by-products
Biology · Effluent · Flocculation · Pilot plant · Pulp and paper industry · Sewage treatment · Turbidity · Wastewater · Advanced oxidation water treatment · Chemistry · Engineering · Environmental Science · Solar-Powered Water Purification Methods · Wastewater Treatment and Reuse · Environmental Engineering
| Citations per year | 0.33 |
|---|---|
| Citation span | 2023 - 2023 (1) |
| Highly cited | No |