Eco-friendly solvent-based liquid-liquid extraction of phenolic acids from winery wastewater streams
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-08-03 |
| Journal | Journal of Environmental Management |
| Authors | I. SĂĄnchez MartĂn, Claudia LĂłpez, JuliĂĄn GarcĂa, Sara Mateo |
| Institutions | Universidad Complutense de Madrid |
| Citations | 7 |
Abstract
Section titled âAbstractâThis study proposes liquid-liquid extraction (LLE) for the recovery of phenolic acids from winery wastewater replacing common volatile organic compounds (VOCs) with environmentally friendly solvents. On one hand, terpenes (α-pinene and p-cymene) and terpenoids (eucalyptol and linalool) were selected as green solvents and compared to common VOCs (ethyl acetate or 1-butanol). On the other hand, gallic acid (GA), vanillic acid (VA), syringic acid (SA) and caffeic acid (CA) were selected as phenolic acids to be recovered. The extraction performance was evaluated under different operation conditions: solvent-to-feed ratio, initial concentration of phenolic acids and temperature. This work also evaluated the back-extraction whole process global recovery and solvent regeneration, by means of aqueous NaOH solution. Eucalyptol has shown the highest overall global extraction performance (21.07 % for GA, 93.21 % for VA, 78.79 % for SA, and 80.57 % for CA) and lower water solubility compared to the best performing VOC solvent (1-butanol). Therefore, eucalyptol can be a potential eco-friendly solvent to replace VOCs for sustainable phenolic acid recovery from winery wastewater. Finally, to ensure a clean water stream after the LLE, the traces of solvent were completely removed by electrooxidation with boron-doped diamond anode at a current density of 422.54 A/m<sup>2</sup>.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 2020 - Grape water: reclaim and valorization of a by-product from the industrial cryoconcentration of grape (Vitis vinifera) must [Crossref]
- 2023 - Cyclic carbonates as solvents in the dearomatization of refinery streams: experimental liquid-liquid equilibria, modelling, and simulation [Crossref]
- 2022 - Removal of recalcitrant compounds from winery wastewater by electrochemical oxidation
- 2016 - Green alternative methods for the extraction of antioxidant bioactive compounds from winery wastes and by-products: a review [Crossref]
- 2014 - Terpenes as green solvents for natural products extraction
- 2008 - Agrochemical characterisation of the solid by-products and residues from the winery and distillery industry [Crossref]
- 2018 - Treatment of winery wastewater by anodic oxidation using BDD electrode [Crossref]
- 2022 - An integrated approach for sustainable valorization of winery wastewater using bio-based solvents for recovery of natural antioxidants [Crossref]