Use of HCl-modified bentonite clay for the adsorption of Acid Blue 129 from aqueous solutions

Ullah, Zia; Hussain, Sajjad; Gul, Saima; Khan, Sabir; Bangash, F. K.

doi:10.1080/19443994.2015.1027282

Cited by 17 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At lower concentrations, all dye molecules present in the solution could interact with binding sites and thus be higher than those at higher concentrations. Thus, the removal efficiency of MB dye decreases as concentration increases, similar observations were reported for natural Saudi Red Clay [34].…”

Section: Effect Of Initial Concentration Of Mb Dyesupporting

confidence: 85%

Preparation and photocatalysis of ZnO/bentonite based on adsorption and photocatalytic activity

Jida

Zereffa²

2023

Mater. Res. Express

View full text Add to dashboard Cite

This article focus on the adsorption and photocataltytic study of methylene blue (MB) dye from aqueous solution with sodium carbonate-activated bentonite adsorbent and ZnO/Bentonite photocatalyst. The activated bentonite adsorbent and ZnO/bentonite nanocomposites photocatalysts were prepared and characterized using XRD, FT-IR, SEM, TEM and AAS. The adsorption experiment was conducted using 5% sodium carbonate activated bentonite (AB5) to establish the effect of different parameters. The adsorption isotherm was performed using Langiumer, Freundlich, and Temkin isotherm models. The result showed the Langiumer adsorption isotherm best fit the adsorption study for the experimental data with R2=1. The kinetic adsorption of MB dye by activated bentonite was conducted using pseudo-first and pseudo-second-order models. The result revealed that the pseudo-second-order fit experimental data well and the process was chemisorption. The endothermic and spontaneous nature of the adsorption process of MB dye AB5 was carried by studying the thermodynamic parameters of the system. Desorption of MB dye from the spent adsorbent and recyclability of adsorbent was studied by thermo-chemical methods. The desorption capacity of MB dye in the selected solvents were small. The adsorbent developed for this study was recycled and its adsorption capacity decreases with adsorbent recycling time. But, the photo-degradation studies conducted using the synthesized ZnO/Bentonite photocatalyst@550(1:1) with average particle size of 30.06 nm resulted with 99.54 % degradation efficiency of MB.

show abstract

Section: Effect Of Initial Concentration Of Mb Dyesupporting

confidence: 85%

Preparation and photocatalysis of ZnO/bentonite based on adsorption and photocatalytic activity

Jida

Zereffa²

2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…Adsorption kinetics was studied by applying pseudo‐first‐order kinetics , pseudo‐second‐order kinetics , , and intraparticle diffusion model , . Their mathematical expressions are given in Eqs.…”

Section: Adsorption Kinetics Isotherms and Thermodynamic Studymentioning

confidence: 99%

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

et al. 2020

Self Cite

View full text Add to dashboard Cite

Adsorption of dibenzothiophene (DBT) from model oil was investigated using composites of pure activated charcoal and pure bentonite clay. DBT adsorption was carried out in batch mode experiments at laboratory scale, where the developed composite materials showed a synergistic effect in removal of DBT from the model oil in terms of improved surface acidity of the pure activated charcoal and mesoporous structure of the pure bentonite clay. Thermodynamics, kinetics, and optimization of various adsorption parameters were investigated. Kinetic analyses proved that DBT adsorption followed pseudo‐second‐order kinetics. To study the thermodynamics of the adsorption, different isotherm adsorption models were applied. The Langmuir isotherm best fitted to the adsorption data. Various thermodynamic parameters were evaluated, including Gibbs free energy, entropy, and enthalpy.

show abstract

“…where C e is the equilibrium concentration of FA (mg L −1 ), q e is the amount (mg g −1 ) of FA adsorbed; X m (mg g −1 ) is adsorption capacity (amount od adsorbate adsorbed per unit mass of the FA) and K 1 is Langmuir constants, representing the adsorption capacity (mg g −1 ) respectively [30] [31]. Straight lines were obtained by plotting C e /q e against C e as shown in Fig.…”

Section: Study Of the Folic Acid Onto Mmips And Mnips By Adsorption Imentioning

confidence: 99%

A novel core@shell magnetic molecular imprinted nanoparticles for selective determination of folic acid in different food samples

Hussain

Khan

Gul

et al. 2016

Reactive and Functional Polymers

Self Cite

View full text Add to dashboard Cite

In this work, magnetic molecularly imprinted polymers (MMIPs) were synthesized and tested for the determination of folic acid (FA) in different food samples. The MMIPs were polymerized at the surface of Fe 3 O 4 @SiO 2 magnetic nanoparticles (MNPs) using acrylonitrile (functional monomer), ethylene glycol dimethacrylate (EGDMA) as cross-linking agent and azobiisobutyronitrile (AIBN) as an radical initiator. The morphological, topological and chemical characteristics of the MMIPs were investigated by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and Fourier transform infrared (FTIR) techniques. The physico-chemical characterization, such as adsorption capacities and selectivity of MMIPs was investigated and compared with the respective MNIPs. The adsorption experimental data demonstrate that maximum adsorption capacity of MMIP at equilibrium was 8 mg g −1 and than the adsorption process of FA over MMIPs follows Freundlich adsorption isotherm model and pseudo-first-order reaction kinetic. For evaluation of this new proposed material, the recovery studies were carried out in spiked samples at different concentration levels and the obtained values were in the range of 95-104% for orange and for spinach the recoveries were between 99.5 and 102.5%. The relative standard deviations (RSD) for the recoveries were b0.5% for both samples. These results demonstrate that this novel MMIP material can be efficiently used for the selective extraction of folic acid from different food complex matrices.

show abstract

Use of HCl-modified bentonite clay for the adsorption of Acid Blue 129 from aqueous solutions

Cited by 17 publications

References 49 publications

Preparation and photocatalysis of ZnO/bentonite based on adsorption and photocatalytic activity

Preparation and photocatalysis of ZnO/bentonite based on adsorption and photocatalytic activity

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

A novel core@shell magnetic molecular imprinted nanoparticles for selective determination of folic acid in different food samples

Contact Info

Product

Resources

About