High efficiency of treated-phengite clay by sodium hydroxide for the Congo red dye adsorption: Optimization, cost estimation, and mechanism study.

Autor: El-Habacha M; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco. Electronic address: mohamed.elhabacha@edu.uiz.ac.ma., Lagdali S; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco., Dabagh A; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco., Mahmoudy G; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco., Assouani A; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco., Benjelloun M; Laboratory of Materials, Processes, Catalysis, and Environment, Higher School of Technology, University Sidi Mohamed Ben Abdellah Fez, Morocco., Miyah Y; Laboratory of Materials, Processes, Catalysis, and Environment, Higher School of Technology, University Sidi Mohamed Ben Abdellah Fez, Morocco; Ministry of Health and Social Protection, Higher Institute of Nursing Professions and Health Techniques, Fez, Morocco., Iaich S; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco; Research Team of Energy and Sustainable Development, Higher School of Technology Guelmim, Ibnou Zohr University, Agadir, Morocco., Chiban M; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco., Zerbet M; Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Science Agadir, Ibnou Zohr University, Agadir, Morocco.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 Oct 15; Vol. 259, pp. 119542. Date of Electronic Publication: 2024 Jul 04.
DOI: 10.1016/j.envres.2024.119542
Abstrakt: Wastewater textile dye treatment is a challenge that requires the development of eco-friendly technology to avoid the alarming problems associated with water scarcity and health-environment. This study investigated the potential of phengite clay as naturally low-cost abundant clay from Tamgroute, Morocco (TMG) that was activated with a 0.1 M NaOH base (TMGB) after calcination at 850 °C for 3 h (TMGC) before its application in the Congo red (CR) anionic dye from the aqueous solution. The effect of various key operational parameters: adsorbent dose, contact time, dye concentration, pH, temperature, and the effect of salts, was studied by a series of adsorption experiments in a batch system, which affected the adsorption performance of TMG, TMGC, and TMGB for CR dye removal. In addition, the properties of adsorption kinetics, isotherms, and thermodynamics were also studied. Experimental results showed that optimal adsorption occurred at an acidic pH. At a CR concentration of 100 mg L -1 , equilibrium elimination rates were 68%, 38%, and 92% for TMG, TMGC, and TMGB, respectively. The adsorption process is rapid, follows pseudo-second-order kinetics, and is best described by a Temkin and Langmuir isotherm. The thermodynamic parameters indicated that the adsorption of CR onto TMGB is endothermic and spontaneous. The experimental values of CR adsorption on TMGB are consistent with the predictions of the response surface methodology. These led to a maximum removal rate of 99.97% under the following conditions: pH = 2, TMGB dose of 7 g L -1 , and CR concentration of 50 mg L -1 . The adsorbent TMGB's relatively low preparation cost of around $2.629 g -1 and its ability to regenerate in more than 6 thermal calcination cycles with a CR removal rate of around 56.98%, stimulate its use for textile effluent treatment on a pilot industrial scale.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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