Removing Thallium (I) Ion from Aqueous Solutions Using Modified ZnO Nanopowder

Khavidaki, Hossein Dashti; Fekri, Mohammad Hossein

doi:10.24297/jac.v11i7.2202

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…This can be explained by the saturation adsorbent sites which cause the adsorbent to uptake more Cr(VI) molecules 12,8 . Other researchers have reported similar results for the adsorption of Zn on NiO nanoparticles and thallium (III) ion on ZnO nanoparticles 13,14 .…”

Section: Adsorption Studies the Effect Of Cr(vi) Initial Concentrationsupporting

confidence: 69%

Sol-Gel Synthesis of NiO Nanoparticles and Investigation on Adsorption Capacity in the Removal of Cr(VI) from Aqueous Solution

Ashan¹,

Ziaeifara²,

Khosravi³

2016

Orient. J. Chem

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In this study, the NiO nanoparticles were synthesized by sol-gel method, and their physicochemical properties were investigated through XRD, SEM-EDX, TEM, and BET-BJH. The TEM results showed that average nanoparticles size was smaller than 10 nm and that there was a good agreement between the TEM and XRD results. The results indicate that NiO nanoparticles are efficient adsorbent for the removal of Cr(VI) from aqueous solutions. The effects of adsorbent, adsorbate concentration, and pH were examined. The equilibrium data could be well described by Sips model. The results of adsorption kinetics study indicated that kinetics obeyed pseudo-second order kinetic model.

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Section: Adsorption Studies the Effect Of Cr(vi) Initial Concentrationsupporting

confidence: 69%

Sol-Gel Synthesis of NiO Nanoparticles and Investigation on Adsorption Capacity in the Removal of Cr(VI) from Aqueous Solution

Ashan¹,

Ziaeifara²,

Khosravi³

2016

Orient. J. Chem

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“…The pH quantity participates a notable role in dye adsorption on the various adsorbents [34]. To appraise the effect of pH on the capacity adsorption, the experiments were directed under fixed experimental conditions, with an initial concentration 30 (mg/L),adsorbent quantity 100 mg, and contact time 50 min at temperature 30 °C.…”

Section: The Effect Of Phmentioning

confidence: 99%

Preparation and characterization of Chicory leaf powder and its application as a nano-native plant sorbent for removal of Acid Blue 25 from aqueous media: isotherm, kinetic and thermodynamic study of the adsorption phenomenon

et al. 2020

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In this study, the Chicory leaf powder (CLP) was used as a native adsorbent to eliminate the Acid Blue 25 dye from aqueous media. The prepared native adsorbent was characterized by several techniques including the X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform spectroscopy (FTIR), Brunauer-Emmet-Teller essay (BET), and particle size analyzer (PSA). A collection of experiments was performed to distinguish the optimal conditions and to probe the effects of the different parameters such as initial concentration, contact time, adsorbent dosage, pH of solution, and temperature on the sorbent capacity. The attained optimal conditions for removal the Acid Blue 25 dye were pH = 3-4, contact time 50 min, dosage 0.1 g, and initial concentrations 10 (mg/L) at 30 °C. The adsorption data revealed that the adsorption procedure has more match with the Langmuir isotherm than others. The kinetic data were better fitted with the pseudo-second-order pattern with a trusty correlation coefficient. Finally, the thermodynamic parameters illustrated that the adsorption process is exothermal and spontaneous. Based on magnitude of the standard enthalpy change related to the studied adsorption, we may derive that the considered adsorption is physical adsorption.

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“…The adsorption process is the most suitable option for removing chemical contaminants and pharmaceutical compounds due to its high efficiency, easy design and implementation of the system, no production of by-products, and cost-effectiveness [11][12][13][14][15][16][17]. Removal and bioremediation of antibiotics are difficult due to the presence of the stable ring of naphthol as the main structure and its toxicity to microorganisms as well as their low biodegradability [18].…”

Section: Introductionmentioning

confidence: 99%

Modification of Activated Carbon (Prepared From Flaxseed) With Fe3O4, Its Application As Adsorbent And Antibacterial

Fekri

Mohamareh

Hosseini

et al. 2021

Preprint

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In this work, magnetic activated carbon (MGAC) was investigated to remove the antibiotic cefazolin from aqueous solutions as well as its antibacterial properties. To determine the optimal process conditions and achieve maximum efficiency, the effect of temperature, contact time, initial concentration of the drug, composite dosage, and pH using the response surface method (RSM) and the central composite design model (CCD) were investigated by DOE software. Structural characteristics and morphology of the nanocomposite were analyzed by using FTIR, XRD, EDAX, SEM, TEM, BET, TGA, VSM, analyzes. The results showed that pH = 6, the temperature of 30 ℃, contact time 150 minutes, initial concentration of drug 20 mg/l, and composite dosage 0.03 g were the best conditions for removing cefazolin from aqueous solution. In these conditions, the magnetically activated carbon was able to remove 96% of cefazolin. The Langmuir, Freundlich, and Temkin isotherms were also studied and the results showed that the absorption behavior is most consistent with the Temkin isotherm. The results of thermodynamic experiments also showed that the adsorption process is exothermic and spontaneous. Finally, the antibacterial properties of the prepared nano composite on Streptococcus and Salmonella were investigated and the results showed that the prepared sample has antibacterial properties.

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Removing Thallium (I) Ion from Aqueous Solutions Using Modified ZnO Nanopowder

Cited by 9 publications

References 22 publications

Sol-Gel Synthesis of NiO Nanoparticles and Investigation on Adsorption Capacity in the Removal of Cr(VI) from Aqueous Solution

Sol-Gel Synthesis of NiO Nanoparticles and Investigation on Adsorption Capacity in the Removal of Cr(VI) from Aqueous Solution

Preparation and characterization of Chicory leaf powder and its application as a nano-native plant sorbent for removal of Acid Blue 25 from aqueous media: isotherm, kinetic and thermodynamic study of the adsorption phenomenon

Modification of Activated Carbon (Prepared From Flaxseed) With Fe3O4, Its Application As Adsorbent And Antibacterial

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