Insight into adsorption mechanism, modeling, and desirability function of malachite green by sediment of Oued Sebou (Morocco): Box-Behnken design application

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-02-15 DOI:10.1680/jenes.23.00107

Lamyae Mardi, Youssef Fahoul, E. Iboustaten, Z. Bencheqroun, Mohamed Belghiti, K. Tanji, Imane El Mrabet, A. Kherbeche

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Abstract

Dye pollution represents an important portion of the pollutants in industrial wastewater. Sediment from the Sebou River was utilized in this investigation to adsorb malachite green in aqueous solution. The optimization of parameters associated with adsorption was achieved by conducting batch adsorption studies and utilizing the response surface approach. The adsorption process was accurately described by both the Langmuir isotherm model and the pseudo-second-order kinetic model, and the maximum capacity for adsorption was determined to be 5.98 mg g−1. In addition, the adsorption rate was effectively determined by intraparticle diffusion. The thermodynamic parameters determined in the study revealed that the adsorption of MG dye by sediment was unspontaneous and endothermic in nature. In three cycles, the regeneration of sediment following adsorption was confirmed. The adsorption process of MG dye onto sediment was found to be driven by two types of interactions - electrostatic and H-bonding. These results indicate that sediment has the potential to be an effective adsorbent for removing dyestuffs from contaminated industrial effluent. Moreover, the ready availability of sediment in the area further enhances its suitability for this purpose.

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洞察 Oued Sebou（摩洛哥）沉积物对孔雀石绿的吸附机理、建模和可取函数：方框-贝肯设计应用

染料污染是工业废水中污染物的重要组成部分。本研究利用塞布河的沉积物来吸附水溶液中的孔雀石绿。通过进行批量吸附研究并利用响应面法，实现了吸附相关参数的优化。朗缪尔等温线模型和假二阶动力学模型都准确地描述了吸附过程，并确定了最大吸附容量为 5.98 mg g-1。此外，吸附速率是通过颗粒内扩散有效确定的。研究中测定的热力学参数表明，沉积物对 MG 染料的吸附是非自发的，具有内热性质。在三个循环中，证实了吸附后沉积物的再生。研究发现，MG 染料在沉积物上的吸附过程是由静电和 H 键两种相互作用驱动的。这些结果表明，沉积物有可能成为从受污染的工业废水中去除染料的有效吸附剂。此外，该地区可随时获得沉积物，这进一步提高了沉积物的适用性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.