Adsorption and photocatalytic degradation investigation of organic dyes on TiO2-bentonite surface in aqueous solution

IF 1 4区工程技术 Q4 ENGINEERING, CHEMICAL

Desalination and Water Treatment Pub Date : 2023-01-01 DOI:10.5004/dwt.2023.29470

R. Cherouaki, Youssef Gherraby, R. Bassam, S. Belaaouad, J. Naja

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引用次数: 0

Abstract

This work investigates the adsorption and the photocatalytic degradation performance of dyes (methylene blue (MB) and methyl orange (MO)) on the surface of raw bentonite (Raw-B) and doped bentonite with titanium oxide (TiO 2 -B). The bentonite was selected from the Nador region in north- ern Morocco, it was doped with various TiO 2 mass ratios. The structural, mineralogical and mor- phological composition of Raw-B and TiO 2 -B was characterized using several techniques including inductively coupled plasma atomic emission spectroscopy, X-ray diffraction, Fourier-transform infrared, transmission electron microscopy, and energy-dispersive X-ray analysis. The adsorption process of MB and MO were affected according to the Langmuir and Freundlich isotherms. The maximum removal capacity of MB and MO were around 60.97 and 142.85 mg/g, respectively. MB and MO degression ratios achieved 100% under a lamp irradiation at 245 nm. The results obtained show that the application of titanium oxide-doped bentonite has a very high performance in wastewater treatment.

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有机染料在tio2 -膨润土表面的吸附及光催化降解研究

本文研究了染料(亚甲基蓝(MB)和甲基橙(MO))在原料膨润土(raw -B)和掺杂氧化钛(tio2 -B)膨润土表面的吸附和光催化降解性能。该膨润土选自摩洛哥北部的纳多尔地区，掺有不同的二氧化钛质量比。利用电感耦合等离子体原子发射光谱、x射线衍射、傅里叶变换红外、透射电镜和能量色散x射线分析等技术对Raw-B和tio2 - b的结构、矿物学和生理组成进行了表征。根据Langmuir等温线和Freundlich等温线对MB和MO的吸附过程产生影响。对MB和MO的最大去除率分别为60.97和142.85 mg/g左右。在245 nm的灯照射下，MB和MO的降解率达到100%。结果表明，掺钛膨润土在废水处理中具有很高的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Desalination and Water Treatment 工程技术-工程：化工

CiteScore

2.20

自引率

9.10%

发文量

审稿时长

5.3 months

期刊介绍： The journal is dedicated to research and application of desalination technology, environment and energy considerations, integrated water management, water reuse, wastewater and related topics.