The Staged Photocatalytic Reactor in the Removal of Acetaminophen: Aspects of Adsorption and Photocatalysis

IF 2.5 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

ChemistryOpen Pub Date : 2024-09-09 DOI:10.1002/open.202400052

Dr. Claudia Aguilar, Mayra García, Dr. Carlos Montalvo, Francisco Anguebes, Dr. Mohamed Abatal, Dr. Julia Cerón, Dr. Rosa Cerón, Dr. Sandra Figueroa, Dr. Alejandro Ruiz, Dr. Marcela Rangel

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Abstract

The efficiency of a staged photocatalytic reactor prototype was evaluated on a semi-pilot scale with the removal of acetaminophen, for which anatase particles were synthesized by Sol-Gel and impregnated on rectangular plates of clay. X-ray diffraction and Energy Dispersive X-ray Fluorescence patterns show that the final composite is made up of Al₂O₃ (14 %), SiO₂ (41 %), CaO (3 %) TiO₂ (34 %), and Fe₂O₃ (7 %). The impregnation method favors the dispersion of Anatase on the surface of the adsorbent. TiO₂-Anatase/Clay, classified as a macro-porous solid with H3-type hysteresis loops by N₂ physisorption. Adsorption processes are improved when using TiO₂-Anatase/Clay compared to using TiO₂-Anatase. The external mass transfer has a greater influence on the removal rate. The dimensionless parameters of the Biot number indicate there are no limitations due to the diffusive effect on the interior of the particle. The evaluation of the kinetic data under the Langmuir-Hinshelwood equation shows a decrease in efficiency as the initial concentration increases. The acetaminophen molecule shows destabilization in the structure of the aromatic ring with a visible decrease in the signals of this functional group evaluated by High-Performance Liquid Chromatography and Raman Spectroscopy.

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去除对乙酰氨基酚的分阶段光催化反应器：吸附和光催化的各个方面。

通过溶胶-凝胶法合成锐钛矿颗粒并将其浸渍在矩形粘土板上，在半试验规模上评估了分阶段光催化反应器原型去除对乙酰氨基酚的效率。X 射线衍射和能量色散 X 射线荧光图显示，最终的复合材料由 Al2O3（14%）、SiO2（41%）、CaO（3%）、TiO2（34%）和 Fe2O3（7%）组成。浸渍法有利于 Anatase 在吸附剂表面的分散。TiO2-Anatase/Clay，通过 N2 物理吸附被归类为具有 H3 型滞后环的大孔固体。与使用 TiO2-Anatase 相比，使用 TiO2-Anatase/Clay 可改善吸附过程。外部传质对去除率的影响更大。Biot 数的无量纲参数表明，颗粒内部的扩散效应不会造成限制。根据 Langmuir-Hinshelwood 方程对动力学数据进行的评估表明，随着初始浓度的增加，效率会降低。对乙酰氨基酚分子的芳香环结构不稳定，通过高效液相色谱法和拉曼光谱法评估，该官能团的信号明显减少。

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来源期刊

ChemistryOpen CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

4.80

自引率

4.30%

发文量

143

审稿时长

1 months

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