Adsorption of hexamethyl pararosaniline chloride dye on MgO‐PbFe2O4: Experimental study and statistical physics modeling via double‐layer model. Issue 11 (17th August 2022)

• Record Type: Journal Article
• Authors: Jethave, Ganesh; Fegade, Umesh; Siddiqui, Mohd Faizan Alam; Ahamed, Mohd Imran; Suryawanshi, Kiran E.
• Is Part Of: International journal of chemical kinetics. Volume 54:Issue 11(2022)
• Page Start: 605
• Page End: 618
• Publication Date: 2022-08-17
• Subjects: double‐layer model -- isotherm modeling -- MgO‐PbFe2O4 -- statistical physics formalism -- steric and energetic parameters; Chemical kinetics -- Periodicals; 541.394
• DOI: 10.1002/kin.21600
• Languages: English
• ISSNs: 0538-8066

Abstract

Abstract: MgO doped PbFe2 O4 (MgO‐PbFe2 O4 ) is synthesized by co‐precipitation followed by ultrasonication method. The study was carried out for the effective adsorption of hexamethyl pararosaniline chloride dye (HPCD) on MgO‐PbFe2 O4 from the industrial effluent. The experimental and theoretical physical models are used to explain the mechanism of the dye adsorption process. The simulation of dye adsorption assuming interaction HPCD + MgO‐PbFe2 O4 is proposed from two types (a) adsorption of dye on MgO‐PbFe2 O4 surface, and (b) the trapping of the HPCD dye in the pores and cavities present in the MgO‐PbFe2 O4 surface. A theoretical measurement displays the parameter n pattern as a solution temperature function was n = 0.373, 0.371, and 0.321 at 298, 308, and 318 K, respectively (i.e., all values were below 1). Thus, during interactions between HPCD and MgO‐PbFe2 O4 active sites, horizontal molecular positioning and multi‐locking mechanisms were involved. The kinetic model shows that the HPCD adsorptions on MgO‐PbFe2 O4 follow the reaction's pseudo‐first‐order. Langmuir isotherm modeling best fitted and describes the HPCD‐MgO‐PbFe2 O4 adsorption system for HPCD dye in 40 min with Q max at 333.33 (mg L –1 ). The reused study and application in the removal of dye from the industrial effluent make MgO‐PbFe2 O4 effective material for pollution control.