Design and synthesis of Zn0.3Fe0.45O3 nanoparticle for efficient removal of Congo red dye and its kinetic and isotherm investigation

Abstract

Zn 0.3 Fe 0.45 O 3 bimetallic oxide nanoparticle (ZnFeBONp) was synthesized and characterized by FESEM, EDS, XRD, BET, TEM and FT-IR techniques with the aim of exploring its application for removing of Congo red dye from waste samples. The effects of pH, contact time, adsorbent dosage and dye concentration on the removal of dye were investigated and optimized as pH 6.5, 40 min contact time, 0.2 g adsorbent dose for 20 ppm dye. Results indicated that the synthesized adsorbent could effectively remove high concentrations of dye in a short contact time. Isotherm modeling revealed that the Langmuir isotherm could better describe the adsorption of the dye on the ZnFeBONp as compared to other models. The q max up to 333.33 mg g −1 .The results showed that the adsorption system followed the Ho and McKay equations for the entire adsorption. Kinetics of Congo red adsorption on ZnFeBONp best fit with the pseudo-second-order model. Because of the high-specific surface area and nano-scale particle size, ZnFeBONp indicated favorable adsorption behavior for dye. Keywords ZnFeBONp · Isotherm modeling · Ho and McKay equations · Pseudo-second-order modelLiquid phase dye concentration at equilibrium (mg L −1 ) K s Equilibrium rate constant of pseudo-second-order adsorption (g mg

Adsorption of hexamethyl pararosaniline chloride dye on MgO‐PbFe2O4: Experimental study and statistical physics modeling via double‐layer model

“…[15][16][17][18][19] Dye wastewater runoff interferes with the photosynthetic activity of marine organisms and is shown to be harmful and carcinogenic to a significant range of dyes and their metabolites. [20][21][22][23][24][25][26][27][28] Herein, a novel nanocomposite MgO-PbFe 2 O 4 was synthesized using co-precipitation followed by ultrasonication process and exploring its application towards the removal of hexamethyl pararosaniline chloride dye (HPCD) and its concentration was determined using UV-Visible spectrophotometer at 580 nm. For the scientific explanation of possible adsorption mechanism of HPCD onto MgO-PbFe 2 O 4 nanoparticle surface, the kinetic models (PFO and PSO), some thermodynamic parameters such as ΔG • , ΔH • , and ΔS • and conventional isotherm models, that is, Langmuir, Freundlich, etc.…”

“…Dye wastewater runoff interferes with the photosynthetic activity of marine organisms and is shown to be harmful and carcinogenic to a significant range of dyes and their metabolites 20–28 . Herein, a novel nanocomposite MgO‐PbFe 2 O 4 was synthesized using co‐precipitation followed by ultrasonication process and exploring its application towards the removal of hexamethyl pararosaniline chloride dye (HPCD) and its concentration was determined using UV–Visible spectrophotometer at 580 nm.…”

Microtubular Nanoporous g-C3N4@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

“…The adsorption isotherms can explain the relationship between adsorbate and adsorbent . Adsorption isotherm analysis can give us useful information about the determination of the adsorption capacity of the catalyst, which is an important feature of a surface adsorption system . In fact, the determination of the isotherm model provides information about the adsorption nature and surface absorbance properties. , Also, the kinetic was studied to estimate the photodegradation rate constant and explain the reaction order.…”

“…272.0 0.1 42.22 1.92 nonlinear adsorption isotherms Temkin model 32 Dubinin−Radushkevich model 4 capacity of the catalyst, which is an important feature of a surface adsorption system. 59 In fact, the determination of the isotherm model provides information about the adsorption nature and surface absorbance properties. 60,61 Also, the kinetic was studied to estimate the photodegradation rate constant and explain the reaction order.…”

Adsorption of Congo red dye using metal oxide nano‐adsorbents: Past, present, and future perspective

“…ZnFeBONp showed favorable dye adsorption behavior due to its high specific surface area and nano-scale particle size. 77 Muhammad Ismail and others synthesized turmeric powder support mixed silver copper (Ag-Cu/TP), coppernickel (Cu-Ni/TP), and nickel silver (Ni-Ag/TP) nanoparticles. For the reductive transformation of as well as the remediation of MO, CR, MB, and RhB dyes, the Ag-Cu/TP catalyst demonstrated excellent catalytic activity.…”