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使用硫醇官能化硅胶吸附剂去除龙舌兰糖浆中的色素化合物:平衡和动力学研究

Color Compounds Removal from Tequila Vinasses Using Silica Gel Adsorbents Functionalized with Thiol Moieties: Equilibrium and Kinetics Studies.

作者信息

Gonzalez-Valerio Carlos, Peregrina-Lucano Alejandro A, Manríquez-González Ricardo, Pérez-Fonseca Aida A, Robledo-Ortíz Jorge R, Shenderovich Ilya G, Gómez-Salazar Sergio

机构信息

Chemical Engineering Department, University of Guadalajara-CUCEI, Blvd. Marcelino García Barragán #1421, esq. Calzada Olímpica, Guadalajara 44430, Jalisco, Mexico.

Pharmacobiology Department, University of Guadalajara-CUCEI, Blvd. Marcelino García Barragán #1421, esq. Calzada Olímpica, Guadalajara 44430, Jalisco, Mexico.

出版信息

Molecules. 2024 Dec 15;29(24):5910. doi: 10.3390/molecules29245910.

Abstract

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 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.

摘要

龙舌兰酒糟是在高温(≥90°C)和pH≤4.0的乙醇发酵过程中产生的有机废物,对环境有害。本文描述了一种基于紫外可见光谱的新的简化方法,用于监测龙舌兰酒糟中有色化合物在硅基吸附剂上的吸附情况,以及一种优化的合成方法,以制备最有效的溶胶-凝胶合成硫醇功能化吸附剂。在优化条件下,该吸附剂在90分钟内的吸附容量达到0.8 g/g。实验结果表明,该吸附剂对类黑素型分子具有特异性亲和力。该吸附剂表现出优异的热稳定性(约316°C)。这项工作的结果表明,该吸附剂在处理废水排放中的龙舌兰酒糟方面具有潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ce3/11679727/666964d4e6d1/molecules-29-05910-g001.jpg

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