Facile route synthesis of novel graphene oxide-β-cyclodextrin nanocomposite and its application as adsorbent for removal of toxic bisphenol A from the aqueous phase

Gupta, Vinod Kumar; Agarwal, Shilpi; Sadegh, Hamidreza; Ali, Gomaa A. M.; Bharti, Arvind K.; Makhlouf, Abdel Salam Hamdy

doi:10.1016/j.molliq.2017.04.113

Cited by 122 publications

(38 citation statements)

References 79 publications

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“…Isotherm parameters can be calculated from slope and intercept of linear regression ln q e versus ln C e . A value of n less than one indicates the irreversibility of the process and greater than one reveals favourable adsorption [36,37]. The values of the constants are presented in Table 2.…”

Section: Freundlich Isothermmentioning

confidence: 99%

“…Temkin's model assume that the heat of adsorption decreases linearity with coverage due to adsorbent and adsorbate interactions. This adsorption differs from a uniform distribution of the bonding energies [37][38][39]. Temkin model can be applied in the linear form by the following expression:…”

Section: Temkin Isothermmentioning

confidence: 99%

“…This empirical kinetic model explains the diffusion mechanism [37,39]. The functional relationship is represented as:…”

Section: Intraparticle Diffusion Kinetic Modelmentioning

confidence: 99%

“…where k dif (mg g −1 min −0.5 ) is the intraparticle diffusion rate constant. The values of the intercept, C (mg g −1 ) give an idea about the thickness of the boundary layer [37]. Kinetic model parameters are shown in Table 3.…”

Section: Intraparticle Diffusion Kinetic Modelmentioning

confidence: 99%

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Analysis of a Hybrid Suspended-Supported Photocatalytic Reactor for the Treatment of Wastewater Containing Benzothiazole and Aniline

Ferreiro

Villota

Lombraña

et al. 2019

Water

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In this work, a study of the main operating variables affecting TiO2/UV photocatalysis was carried out. The treatment of an industrial effluent containing aniline and benzothiazole from the manufacture of accelerants for vulcanization was performed in a TiO2-supported commercial photoreactor. The degradation of both contaminants was monitored by GC-MS analysis. The proposed experiments were able to properly identify the phenomenon of adsorption, as well as to improve the performance of the commercial photoreactor by adding small amounts of TiO2 in suspension. The removal performance, durability of the photocatalytic material, and energy costs were analysed. The results showed that the use of suspensions intensifies the degradation obtaining an improvement of 23.15% with respect to the use of the supported catalyst. For an aniline and benzothiazole solution, the best operating conditions were found at pH = 12.0, introducing 60.0 mg L−1 of suspended TiO2 together with the existing supported catalyst.

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Section: Freundlich Isothermmentioning

confidence: 99%

Section: Temkin Isothermmentioning

confidence: 99%

“…This empirical kinetic model explains the diffusion mechanism [37,39]. The functional relationship is represented as:…”

Section: Intraparticle Diffusion Kinetic Modelmentioning

confidence: 99%

Section: Intraparticle Diffusion Kinetic Modelmentioning

confidence: 99%

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Analysis of a Hybrid Suspended-Supported Photocatalytic Reactor for the Treatment of Wastewater Containing Benzothiazole and Aniline

Ferreiro

Villota

Lombraña

et al. 2019

Water

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show abstract

“…Thereafter, the adsorption capacity of CV ( q; mg/g) and the removal percentage for CV adsorption onto the PMMA–GO and PMMA–GO–ZnO nanocomposites were determined by eqs. :

q = ((), \frac{C_{0} - C_{e}}{W}) \times V

% Removal = ((), \frac{C_{0} - C_{e}}{C_{0}}) \times 100

where C 0 is the initial concentration of CV (ppm), C e is the CV concentration after removal by the adsorbent (mg/L), W is the PMMA–GO and PMMA–GO–ZnO nanocomposites mass (g), and V is the solution volume of CV (L).…”

Section: Methodsmentioning

confidence: 99%

Thermodynamic and kinetic studies of crystal violet dye adsorption with poly(methyl methacrylate)–graphene oxide and poly(methyl methacrylate)–graphene oxide–zinc oxide nanocomposites

Rajabi

Mahanpoor

Moradi

2019

J of Applied Polymer Sci

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We successfully prepared poly(methyl methacrylate) (PMMA)–graphene oxide (GO) and PMMA–GO–zinc oxide (ZnO) nanocomposites and characterized them using different techniques. The adsorption performances of the as‐prepared composites were investigated for crystal violet (CV) dye removal. The contact time as a main factor affecting the adsorption process by adsorbents was studied. Because the adsorption capacity value for CV was found to show no extensive changes after 35 min, 35 min was selected as the best contact time for our system. The adsorption results revealed that the best capacity of CV adsorption onto the PMMA–GO and PMMA–GO–ZnO nanocomposites occurred at pH 12 and 298 K. The respective entropies (−0.208 and −0.168 kJ mol−1 K−1) and enthalpies (−72.86 kJ/mol, and −55.54 kJ/mol) for PMMA–GO and PMMA–GO–ZnO and Gibbs energy revealed that the process of adsorption was exothermic. In addition, the Elovich, pseudo‐first‐order, intraparticle diffusion, and pseudo‐second‐order (four types) models were applied to our kinetic study. Our results indicate that CV adsorption onto PMMA–GO and PMMA–GO–ZnO was good with the pseudo‐second‐order (type 1) and pseudo‐first‐order models because of the low χ2 value and the high correlation coefficient value. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47495.

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Chemically Modified Carbon Nanotubes for Water Purification System

Mazrouaa¹,

Mousa²,

Mohamed³

2022

Chemically Modified Carbon Nanotubes for Commercial Applications

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Facile route synthesis of novel graphene oxide-β-cyclodextrin nanocomposite and its application as adsorbent for removal of toxic bisphenol A from the aqueous phase

Cited by 122 publications

References 79 publications

Analysis of a Hybrid Suspended-Supported Photocatalytic Reactor for the Treatment of Wastewater Containing Benzothiazole and Aniline

Analysis of a Hybrid Suspended-Supported Photocatalytic Reactor for the Treatment of Wastewater Containing Benzothiazole and Aniline

Thermodynamic and kinetic studies of crystal violet dye adsorption with poly(methyl methacrylate)–graphene oxide and poly(methyl methacrylate)–graphene oxide–zinc oxide nanocomposites

Chemically Modified Carbon Nanotubes for Water Purification System

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