Physicochemical evaluation of the effect of natural zeolite modification with didodecyldimethylammonium bromide on the adsorption of Bisphenol-A and Propranolol Hydrochloride

Rakhym, Akmaral; Seilkhanova, Gulziya A.; Mastai, Yitzhak

doi:10.1016/j.micromeso.2021.111020

Cited by 23 publications

(12 citation statements)

References 48 publications

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“…The increase in adsorption while the textural properties of the adsorbent decreased suggests that adsorption did not depend on the surface area and porosity of the zeolite. A similar analogy was also stated by Rakhym et al 38 On the other hand, the textural properties were similar for all the HT-modified zeolites, reinforcing the above-mentioned statement.…”

Section: The Probable Mechanism Of Adsorptionsupporting

confidence: 89%

“…1(a). The obtained FTIR spectra of zeolites follow other reported works 38 and are characterized by three main sections. The first section is from wavenumber 3000 to 4000 cm −1 due to vibrations of the hydroxyl groups (‐OH) presented in the zeolitic structure.…”

Section: Resultsmentioning

confidence: 56%

“…Moreover, CTAB also changes the hydrophobicity of the zeolite surface due to their polar (N-group) head and non-polar (HC-group) tail. 38 At concentrations below critical micelle concentration (CMC), positive sides of the surfactant monomers are adsorbed by negatively charged regions in zeolites, making a surfactant layer on their surface. A second surfactant layer is created after its concentration grows and reaches hydrophobia among hydrocarbon molecules of the surfactant.…”

Section: Introductionmentioning

confidence: 99%

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The ‘chimie douce’ process towards the modification of natural zeolites for removing drugs and pesticides from water

Viotti

Moreira

Straioto

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Drugs and pesticides are emerging contaminants, and their presence in surface and groundwater have been increasing. Therefore, this work aims to study the modification of natural zeolite to remove these contaminants from water. RESULTS Among the modifications carried out, hydrothermal treatment in the presence of surfactant (CTAB) was highlighted. The hydrothermal treatment with surfactant provided a structural rearrangement. As a result, the zeolite became more hydrophobic, with a smaller specific area and a more significant amount of mesopores and macropores. Changes in textural and chemical characteristics resulted in a significant increase in the removal of the evaluated pesticides and drugs. In order to evaluate the potential of zeolites to remove emerging contaminants under conditions closer to reality, the modified samples were evaluated in the adsorption process of simulated contaminated water. The maximum adsorption capacities obtained were 28.24, 3.07, and 20.06 mg g−1 for 2,4‐D, diuron, and diclofenac, respectively, using HT‐H2O_CTAB under conditions closer to real water treatment (30 °C and natural pH of the solution). CONCLUSION The results demonstrate that hydrothermal modification with CTAB is a promising ‘chimie douce’ technique to use natural zeolites to remove emerging contaminants. © 2022 Society of Chemical Industry (SCI).

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Section: The Probable Mechanism Of Adsorptionsupporting

confidence: 89%

Section: Resultsmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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The ‘chimie douce’ process towards the modification of natural zeolites for removing drugs and pesticides from water

Viotti

Moreira

Straioto

et al. 2022

J of Chemical Tech & Biotech

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“…The band at 1630 cm -1 is related to the O-H stretching vibrations and the adsorbed H 2 O molecules. [20][21][22][23] As seen in Fig. 3, there were a few differences between Z, ZZF, and m-ZZF spectrum.…”

Section: Methodsmentioning

confidence: 76%

Decolorization of Direct Black 22 by Photo Fenton like Method Using UV Light and Zeolite Modified Zinc Ferrite: Kinetics and Thermodynamics

Fındık

2022

ACSi

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In this study, a heterogeneous catalyst was prepared to enhance photo-Fenton like oxidation of Direct Black-22 (DB-22). Zeolite modified with zinc ferrite was used as a catalyst. The prepared catalyst was characterized using FTIR, SEM, EDS and XRD. The effect of various parameters like catalyst modification with HCl, H2O2 amount, catalyst amount, CaCl2 amount, initial pH, initial concentration and temperature on the decolorization of DB-22 was studied under UV light. Kinetic and thermodynamic properties were investigated. The highest decolorization of DB-22 was found to be 93.3% under the following conditions: initial concentration: 0.070 g/L, initial temperature: 25 °C, original pH, H2O2 amount: 2.78 g/L, m-ZZF amount: 3 g/L, CaCl2 amount: 3.75 g/L, reaction time: 60 min and UV light. The activation energy was found to be –14.76 kJ/mol under the studied conditions. The decolorization reaction was an exothermic reaction, and the calculated reaction enthalpy was –17.31 kJ/mol. The activation entropy was calculated to be –0.326 kJ/mol. The standard Gibbs free energy change of the activation had a positive value, and it increased with increasing temperature.

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“…Various adsorbents have been developed for the removal of water pollutants. These include carbon-based materials such as modified activated carbon, carbon nanotubes, graphene, graphene oxide, carbon microspheres, agro-industry waste materials, porous organic polymers, , lignocellulosic material, surfactant-modified zeolites, and more.…”

Section: Introductionmentioning

confidence: 99%

Sonochemically Prepared BSA Microspheres as Adsorbents for the Removal of Organic Pollutants from Water

et al. 2021

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This work investigates, for the first time, the application of sonochemically prepared bovine serum albumin (BSA) microspheres (BSAMS) as adsorbents of industrial organic pollutant dyes, such as rhodamine B (RhB), rhodamine 6G (Rh6G), and methylene blue (MB). These dyes also serve as model compounds for other organic pollutants such as bisphenol A and 2-nitrophenol. Adsorption kinetics of the dyes by the BSAMS was studied using pseudo-first-order (PFO) and pseudo-secondorder (PSO) kinetic models. It was found that RhB follows PFO, with an adsorption capacity, q e,cal , of 7.9 mg/g, which was closer to the experimental adsorption capacity of q e,exp. of 7.6 mg/g. However, MB and Rh6G were controlled by PSO kinetics, with a q e,cal of 5.6 mg/g for MB and 6.6 mg/g for Rh6G, closer to the experimental adsorption capacity of 5.7 and 6.4 mg/g, respectively. The intraparticle diffusion (ID) model applied to the three dyes indicated multi-linearity with ID as the rate-limiting step in the adsorption process. Furthermore, the adsorption equilibria for each of the organic pollutants were studied through various isotherm models such as Langmuir, Freundlich, Temkin, and Halsey, which indicated physical interaction between the BSAMS and the dye pollutants, thus suggesting the applicability of the BSAMS as pollutant adsorbent materials. It was found that the BSAMS can effectively remove RhB, MB, and Rh6G from wastewater with efficiencies of 95.5, 83.3, and 97.9%, respectively.

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Physicochemical evaluation of the effect of natural zeolite modification with didodecyldimethylammonium bromide on the adsorption of Bisphenol-A and Propranolol Hydrochloride

Cited by 23 publications

References 48 publications

The ‘chimie douce’ process towards the modification of natural zeolites for removing drugs and pesticides from water

The ‘chimie douce’ process towards the modification of natural zeolites for removing drugs and pesticides from water

Decolorization of Direct Black 22 by Photo Fenton like Method Using UV Light and Zeolite Modified Zinc Ferrite: Kinetics and Thermodynamics

Sonochemically Prepared BSA Microspheres as Adsorbents for the Removal of Organic Pollutants from Water

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