Modeling and optimization of ultrasound-assisted adsorption of crystal violet dye by graphene oxide nanoparticles using response surface methodology

Kifayatullah, Hafiz Muhammad; Tahir, Hajira; Shah, Abdul Rauf

doi:10.1080/03067319.2020.1787398

Cited by 15 publications

(5 citation statements)

References 35 publications

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“…A soft flaky texture reflecting its layered structure with irregular surface roughness and sheets of GO that are not well connected was observed, as shown in Figure a. Distorted graphene sheets were noticed due to the oxidation process of graphite to form GO; they also indicate the attachment of oxygen and other functional group with graphene to form GO . These oxygenated functional groups in GO highly enhanced the attachment of targeted pollutants.…”

Section: Resultsmentioning

confidence: 99%

“…Distorted graphene sheets were noticed due to the oxidation process of graphite to form GO; they also indicate the attachment of oxygen and other functional group with graphene to form GO. 44 These oxygenated functional groups in GO highly enhanced the attachment of targeted pollutants. Moreover, this surface roughness accounted for the large specific surface area, which would enhance the adsorption capability of GO.…”

Section: Resultsmentioning

confidence: 99%

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A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

et al. 2022

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Graphene oxide (GO) was prepared from the graphite electrode of waste dry cells, and the application of the prepared GO as a potential adsorbent for rapid and effective removal of an antibiotic, azithromycin (AZM), has been investigated. The synthesis process of GO is very simple, cost-effective, and eco-friendly. As-prepared GO is characterized by field-emission scanning electron microscopy, energy-dispersive X-ray, transmission electron microscopy, X-ray diffractometry, Fourier transform infrared spectroscopy, elemental analysis, Brunauer–Emmett–Teller sorptometry, and zeta potential analysis. The obtained GO has been employed for removal of the widely used AZM antibiotic from an aqueous solution. The quantitative analysis of AZM before and after adsorption has been carried out by liquid chromatography tandem mass spectrometry. The adsorption of AZM by GO was performed in a batch of experiments where the effects of adsorbent (GO) dose, solution pH, temperature, and contact time were investigated. Under optimum conditions (pH = 7.0, contact time = 15 min, and adsorbent dose = 0.25 g/L), 98.8% AZM was removed from the aqueous solution. The rapid and effective removal of AZM was significantly controlled by the electrostatic attractions and hydrogen bonding on the surface of GO. Adsorption isotherms of AZM onto GO were fitted well with the Freundlich isotherm model, while the kinetic data were fitted perfectly with the pseudo-second order. Therefore, the simple, cost-effective, and eco-friendly synthesis of GO from waste material could be applicable to fabricate an effective and promising low-cost adsorbent for removal of AZM from aqueous media.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

et al. 2022

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“…The reaction must be heated and stirred for up to 2 h at 70 °C to precipitate completely. The precipitate was mechanically decanted, washed with water several times, and then heated to a temperature of 98 °C for 6 h. [29,30] The precipitate is crushed after drying to create a fine powder that will be utilized in all the studies. The size of the particles is 19.46 nm on average.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Fuchsine Dye on TiZnPbO Nanocomposites: Analytical Modeling and Interpretation

Jethave,

Fegade,

Attarde

et al. 2023

ChemistrySelect

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In this study, the synthesis process of TiZnPbO nanocomposite and its use for the removal of Basic Fuchsin (BF) dye from wastewater was studied. The influence of contact duration (90 min), concentration (200 mg/L), solution pH (3.0), and adsorbent dosage (0.2 g) on adsorption studies were thoroughly examined. The kinetic models (pseudo‐first‐order and pseudo‐second‐order) and isotherm models (Langmuir and Freundlich) are used to understand the adsorption mechanism and behavior of BF over adsorbents. According to the kinetic data, the models fit a pseudo‐second‐order equation which is an indication of a heterogeneous chemisorption process. The Langmuir isotherm is best fitted with R2 of 0.999 and a maximum adsorption capacity of 208.33 mg/g. It was determined that the values of n for the adsorption of BF on TiZnPbO at 298 K were less than unity (n=0.516, 0.504, and 0.501). This finding showed that the BF dyes should be adsorbed on this adsorbent in a non‐parallel orientation. As for BF adsorption on TiZnPbO, the isotherm data indicated that it behaved more like a multilayer than a monolayer. The TiZnPbO adsorbent showed high recyclability at least 5 times.

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“…The model summary is given in Table 6. The residual plots are showing the nature of the developed model (Kifayatullah et al, 2020;Crini and Badot, 2008). Fig.…”

Section: Adsorption Kinetics Studymentioning

confidence: 99%

Central Composite Design Based Adsorption Study of Malachite Green Dye Using Reduced Graphene Oxide Nano-Adsorbent

Shah

Tahir

Kifayatullah

2021

Pak. j. sci. ind. res. Ser. A: phys. sci.

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The adsorption of Malachite Green (MG) dye was well studied and elucidated from the liquid phase using reduced Graphene Oxide (rGO) nano-adsorbent. The desired levels of the factors were determined to be the amount of adsorbent of 0.2 g/L, pH of 8.5, the concentration of the dye as 100 mg/L and the sonication time of 50 min by Central Composite Design (CCD). The removal of the dye was found to be 95% at the optimum levels of the variables. Furthermore, the removal of the dye was higher at the higher values of the amount of adsorbent and pH. Langmuir and Temkin models were observed significant for rGO-MG dye system. The values of Gibb's free energy, the entropy and the enthalpy were found to be -10.502 KJ/mol, 34.314 KJ/mol and 0.147 KJ/mol.K, respectively. The kinetic data were also found well fitted to pseudo second order kinetics model for the said system. Afterwards, the cost of the process was found to be US$0.654/dm3. Therefore, the adsorption process effectively removed the dye from the simulated aqueous phase using rGO nano-adsorbent.

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Modeling and optimization of ultrasound-assisted adsorption of crystal violet dye by graphene oxide nanoparticles using response surface methodology

Cited by 15 publications

References 35 publications

A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

Adsorption of Fuchsine Dye on TiZnPbO Nanocomposites: Analytical Modeling and Interpretation

Central Composite Design Based Adsorption Study of Malachite Green Dye Using Reduced Graphene Oxide Nano-Adsorbent

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