Kinetic adsorption studies of methylene blue and crystal violet dyes removal in single and competitive systems using lemon peels/activated carbon/alginate composite

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-10-23 DOI:10.1007/s11144-024-02736-5

Amina Aichour, Hakim Djafer Khodja, Hassina Zaghouane-Boudiaf, Cesar Viseras Iborra, Manuel Sanchez Polo

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引用次数: 0

Abstract

Efficient hybrid multifunctional composite was elaborated in order to eliminate cationic dyes (methylene blue and crystal violet). Lemon peels-biomass-Derived and activated carbon were encapsulated with calcium alginate in order to obtain the hybrid composite. Several analyses were used to characterize the composite such as Elementary analysis, FTIR, PXRD, SEM, BET, and pH_PZC. Adsorption studies were investigated according to different operational conditions. High adsorption stability via pH was observed from 5 to 11. MB adsorption process was found to be spontaneous and exothermic nature, proven by the negative value of ΔH° and ΔG°. Isotherm study revealed that the experimental adsorbed Methylene blue amount on the composite reached 1130.97 mg/g. Langmuir, Freundlich, and Toth models were applied to analyze isotherm adsorption. Langmuir and Toth models show the highest correlation coefficients R² > 0.985 and R² > 0.994 respectively. Binary equilibrium study showed that the presence of CV reduces MB removal indicating the competitiveness between the two cationic dyes. Reusability study of composite was investigated through six cycles of adsorption–desorption. Adsorption performance was decreased with increase on cycle’s numbers. Prepared new hybrid composite is considered as highly recyclable and efficient adsorbent for organic dyes, it contributes to reduce more the process cost.

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来源期刊

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.