Adsorption Study of Eriochrome Black T Dye on Polyacrylonitrile Chromium molybdate Composite

IF 0.6 4区化学 Q4 CHEMISTRY, APPLIED

Russian Journal of Applied Chemistry Pub Date : 2024-08-20 DOI:10.1134/s1070427224020125

Y. F. El-Aryan, S. Melhi

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Abstract

Polyacrylonitrile chromium(III) molybdate composite has been synthesized by mixing polyacrylonitrile into inorganic material chromium molybdate. The physicochemical properties of this material were determined using X-ray diffractometer system (XRD), infrared (IR) and thermal analysis (TGA and DTA). The adsorption studies were carried out under various parameters, such as pH, adsorbent dosage, contact time, and initial dye concentration. The experimental results show that the percentage of adsorption increases with an increase in the adsorbent dosage. The maximum adsorption occurred at the pH value of 2.45 The equilibrium uptake was increased with an increase in the initial dye concentration in solution. Adsorption kinetic data were properly fitted with the pseudo-second-order kinetic model. The experimental isotherms data were analyzed using Langmuir and Freundlich isotherm equations. The best fit was obtained by the Langmuir model with high correlation coefficients (R² = 0.9976) with a maximum monolayer adsorption capacity of 11.38 mg/g.

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聚丙烯腈铬钼酸盐复合材料对 Eriochrome Black T 染料的吸附研究

摘要通过将聚丙烯腈与无机材料钼酸铬混合，合成了聚丙烯腈钼酸铬（III）复合材料。使用 X 射线衍射仪（XRD）、红外线（IR）和热分析（TGA 和 DTA）测定了该材料的理化性质。在 pH 值、吸附剂用量、接触时间和初始染料浓度等不同参数下进行了吸附研究。实验结果表明，吸附百分比随着吸附剂用量的增加而增加。随着溶液中初始染料浓度的增加，平衡吸附量也随之增加。吸附动力学数据与假二阶动力学模型进行了适当的拟合。实验等温线数据采用 Langmuir 和 Freundlich 等温线方程进行分析。Langmuir 模型的拟合效果最好，相关系数高（R2 = 0.9976），最大单层吸附容量为 11.38 毫克/克。

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来源期刊

Russian Journal of Applied Chemistry 化学-应用化学

CiteScore

1.60

自引率

11.10%

发文量

审稿时长

2-4 weeks

期刊介绍： Russian Journal of Applied Chemistry (Zhurnal prikladnoi khimii) was founded in 1928. It covers all application problems of modern chemistry, including the structure of inorganic and organic compounds, kinetics and mechanisms of chemical reactions, problems of chemical processes and apparatus, borderline problems of chemistry, and applied research.