Gonzalez-Valerio, Carlos and Peregrina-Lucano, Alejandro A. and Manriquez-Gonzalez, Ricardo and Perez-Fonseca, Aida A. and Robledo-Ortiz, Jorge R. and Shenderovich, Ilya G. and Gomez-Salazar, Sergio (2024) Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies. MOLECULES, 29 (24): 5910. ISSN 1420-3049
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Tequila vinasses are organic wastes generated during ethanol fermentation at elevated temperatures (>= 90 degrees 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(-1) in 90 min. Experimental results demonstrate that the adsorbent has a specific affinity for melanoidin-type molecules. The adsorbent demonstrates excellent thermal stability (similar to 316 degrees C). The results of this work indicate that the adsorbent possesses potential in the treatment of tequila vinasses from wastewater discharges.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SBA-15 SILICA; ADSORPTION; MODELS; NMR; PERFORMANCE; tequila vinasses; sol-gel; silica gel; adsorbent; adsorption |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Central Analytical Services |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Dec 2025 05:57 |
| Last Modified: | 10 Dec 2025 05:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64613 |
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