Adsorption of Magenta Dye on PbO Doped MgZnO: Interpretation of Statistical Physics Parameters Using Double-Layer Models

Tariq Altalhi, Ganesh Jethave, Umesh Fegade (), Gaber A. M. Mersal, Mohamed M. Ibrahim, M.H.H. Mahmoud, Tushar Kumeria, Kalpesh A. Isai and Milind Sonawane
Additional contact information
Tariq Altalhi: Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Ganesh Jethave: Department of Chemistry, Dr. Annasaheb G. D. Bendale Mahila Mahavidyalaya, Jalgaon 425001, Maharashtra, India
Umesh Fegade: Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal 425201, Maharashtra, India
Gaber A. M. Mersal: Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Mohamed M. Ibrahim: Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
M.H.H. Mahmoud: Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Tushar Kumeria: School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Kalpesh A. Isai: Department of Applied Science and Humanities, R. C. Patel Institute of Technology, Shirpur 425405, Maharashtra, India
Milind Sonawane: Department of Applied Science and Humanities, R. C. Patel Institute of Technology, Shirpur 425405, Maharashtra, India

IJERPH, 2022, vol. 19, issue 19, 1-17

Abstract: This article reports the synthesis of PbO doped MgZnO (PbO@MgZnO) by a co-precipitation method, followed by an ultrasonication process. PbO@MgZnO demonstrates a significant adsorption capability toward Magenta Dye (MD). The greatest adsorption capability was optimized by varying parameters such as pH, MD concentration, and adsorbent dose. The kinetics study illustrates that the adsorption of MD on PbO@MgZnO follows the pseudo-second-order. The isotherm study revealed that Langmuir is best fitted for the adsorption, but with little difference in the R 2 value of Langmuir and Freundlich, the adsorption process cloud be single or multi-layer. The maximum adsorption capacity was found to be 333.33 mg/g. The negative ΔG refers to the spontaneity of MD adsorption on PbO@MgZnO. The steric parameters from statistical physics models also favor the multi-layer adsorption mechanism. As a function of solution temperature, the parameter n pattern has values of n = 0.395, 0.290, and 0.280 for 298, 308, and 318 K, respectively (i.e., all values were below 1). Therefore, horizontal molecule positioning and multiple locking mechanisms were implicated during interactions between MD and PbO@MgZnO active sites.

Keywords: PbO@MgZnO; Magenta Dye; statistical physics models; multi-layer adsorption; reuse study (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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