Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies
Tequila vinasses are organic wastes generated during ethanol fermentation at elevated temperatures (≥90 °C) and pH ≤ 4.0, making them hazardous to the environment. This paper describes a new, simplified UV–vis spectroscopy-based procedure for monitoring the adsorption of color compounds in tequila v...
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2024-12-01
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| author | Carlos Gonzalez-Valerio Alejandro A. Peregrina-Lucano Ricardo Manríquez-González Aida A. Pérez-Fonseca Jorge R. Robledo-Ortíz Ilya G. Shenderovich Sergio Gómez-Salazar |
| author_facet | Carlos Gonzalez-Valerio Alejandro A. Peregrina-Lucano Ricardo Manríquez-González Aida A. Pérez-Fonseca Jorge R. Robledo-Ortíz Ilya G. Shenderovich Sergio Gómez-Salazar |
| author_sort | Carlos Gonzalez-Valerio |
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| description | Tequila vinasses are organic wastes generated during ethanol fermentation at elevated temperatures (≥90 °C) and pH ≤ 4.0, making them hazardous to the environment. This paper describes a new, simplified UV–vis spectroscopy-based procedure for monitoring the adsorption of color compounds in tequila vinasses onto silica-based adsorbents, along with an optimized synthesis method to produce the most efficient sol–gel synthesized thiol-functionalized adsorbent. Under optimized conditions, the uptake capacity of this adsorbent reaches 0.8 g g<sup>−1</sup> in 90 min. Experimental results demonstrate that the adsorbent has a specific affinity for melanoidin-type molecules. The adsorbent demonstrates excellent thermal stability (~316 °C). The results of this work indicate that the adsorbent possesses potential in the treatment of tequila vinasses from wastewater discharges. |
| format | Article |
| id | doaj-art-6808673ecce64a28aa0ea720b81d45dd |
| institution | OA Journals |
| issn | 1420-3049 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-6808673ecce64a28aa0ea720b81d45dd2025-08-20T02:01:20ZengMDPI AGMolecules1420-30492024-12-012924591010.3390/molecules29245910Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics StudiesCarlos Gonzalez-Valerio0Alejandro A. Peregrina-Lucano1Ricardo Manríquez-González2Aida A. Pérez-Fonseca3Jorge R. Robledo-Ortíz4Ilya G. Shenderovich5Sergio Gómez-Salazar6Chemical Engineering Department, University of Guadalajara—CUCEI, Blvd. Marcelino García Barragán #1421, esq. Calzada Olímpica, Guadalajara 44430, Jalisco, MexicoPharmacobiology Department, University of Guadalajara—CUCEI, Blvd. Marcelino García Barragán #1421, esq. Calzada Olímpica, Guadalajara 44430, Jalisco, MexicoDepartment of Wood, Cellulose, and Paper, University of Guadalajara—CUCEI, Zapopan 45150, Jalisco, MexicoChemical Engineering Department, University of Guadalajara—CUCEI, Blvd. Marcelino García Barragán #1421, esq. Calzada Olímpica, Guadalajara 44430, Jalisco, MexicoDepartment of Wood, Cellulose, and Paper, University of Guadalajara—CUCEI, Zapopan 45150, Jalisco, MexicoFaculty of Chemistry and Pharmacy, University of Regensburg, Universitaetstrasse 31, 93053 Regensburg, GermanyChemical Engineering Department, University of Guadalajara—CUCEI, Blvd. Marcelino García Barragán #1421, esq. Calzada Olímpica, Guadalajara 44430, Jalisco, MexicoTequila vinasses are organic wastes generated during ethanol fermentation at elevated temperatures (≥90 °C) and pH ≤ 4.0, making them hazardous to the environment. This paper describes a new, simplified UV–vis spectroscopy-based procedure for monitoring the adsorption of color compounds in tequila vinasses onto silica-based adsorbents, along with an optimized synthesis method to produce the most efficient sol–gel synthesized thiol-functionalized adsorbent. Under optimized conditions, the uptake capacity of this adsorbent reaches 0.8 g g<sup>−1</sup> in 90 min. Experimental results demonstrate that the adsorbent has a specific affinity for melanoidin-type molecules. The adsorbent demonstrates excellent thermal stability (~316 °C). The results of this work indicate that the adsorbent possesses potential in the treatment of tequila vinasses from wastewater discharges.https://www.mdpi.com/1420-3049/29/24/5910tequila vinassessol–gelsilica geladsorbentadsorption |
| spellingShingle | Carlos Gonzalez-Valerio Alejandro A. Peregrina-Lucano Ricardo Manríquez-González Aida A. Pérez-Fonseca Jorge R. Robledo-Ortíz Ilya G. Shenderovich Sergio Gómez-Salazar Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies Molecules tequila vinasses sol–gel silica gel adsorbent adsorption |
| title | Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies |
| title_full | Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies |
| title_fullStr | Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies |
| title_full_unstemmed | Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies |
| title_short | Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies |
| title_sort | color compounds removal from tequila vinasses using silica gel adsorbents functionalized with thiol moieties equilibrium and kinetics studies |
| topic | tequila vinasses sol–gel silica gel adsorbent adsorption |
| url | https://www.mdpi.com/1420-3049/29/24/5910 |
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