Decorating graphene oxide with zeolitic imidazolate framework (ZIF-8) and pseudo-boehmite offers ultra-high adsorption capacity of diclofenac in hospital effluents

Arabkhani, Payam; Javadian, Hamedreza; Asfaram, Arash; Ateia, Mohamed

doi:10.1016/j.chemosphere.2021.129610

Cited by 124 publications

(32 citation statements)

References 72 publications

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“…4 b. The deformative vibration of the molecules of water is shown by stretching vibration of OH at 3437 cm −1 corresponding to free hydrogen-bonded hydroxyl groups 30 . The nitro groups of the precursors are responsible for other minor peaks shown at 1122 cm −1 and 1254 cm −1 35 .…”

Section: Resultsmentioning

confidence: 99%

“…This may be attributed to the increased surface area and the existence of further adsorption sites. It is also a fact that increasing the adsorbent mass prevents the sites from saturating during the process 30 , 40 . Figure 7 b shows the simultaneous effect of adsorbent mass and contact time on the adsorption efficiency.…”

Section: Resultsmentioning

confidence: 99%

“…As a result, optimizing the process requires a thorough understanding of how these factors interact simultaneously to impact adsorption. Thus, the experimental design as a collection of useful mathematical techniques was applied to improve the design and optimize the key parameters 30 . RSM (response surface methodology) is an effective statistical technique for simultaneously considering several independent variables and their interactions that impact the objective function.…”

Section: Introductionmentioning

confidence: 99%

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A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

Arabkhani

Javadian

Asfaram

et al. 2021

Sci Rep

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In this research, mesoporous calcium aluminate nanostructures (meso-CaAl2O4) were synthesized using a citric acid-assisted sol–gel auto-combustion process as the potential adsorbent to eliminate toxic triphenylmethane dye malachite green (MG) from synthetic/real effluent. The surface morphology of meso-CaAl2O4 was highly porous with nanometric size and non-homogeneous surface. The specific surface area, total pore volume, and BJH pore diameter of meso-CaAl2O4 were 148.5 m2 g−1, 1.39 cm3 g−1, and 19 nm, respectively. The meso-CaAl2O4 also showed a very high heat resistance, due to losing only 7.95% of its weight up to 800 °C, which is mainly related to the moisture loss. The optimal adsorption conditions were obtained based on response surface methods (RSM)-central composite design (CCD) techniques. The Langmuir isotherm model was used for fitting the adsorption measurements, which presented 587.5 mg g–1 as the maximum adsorption capacity of the dye. The data obtained from the adsorption kinetics model were found to correspond to the pseudo-second-order model. Also, the thermodynamic parameters including enthalpy change (ΔH°), entropy change (ΔS°), and Gibbs free energy change (ΔG°) indicated that MG dye adsorption by the meso-CaAl2O4 was feasible, endothermic, and occurred spontaneously. Furthermore, the meso-CaAl2O4 was regenerated by microwave irradiation under 900 W at 6 min, and the MG dye removal efficiency was remained over 90% after the five cycles of microwave regeneration.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

Arabkhani

Javadian

Asfaram

et al. 2021

Sci Rep

Self Cite

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“…Regarding the homogenous and compact structural, the surface morphology of the EPS had similar features to that of magnetic nanocomposite (GO/ZIF-8/γ-AlOOH) based on graphene oxide [37,38].…”

Section: Structural Analysismentioning

confidence: 86%

Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp.

et al. 2022

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“…They also investigated the magnetic efficiency of GO/ZIF-8/γ-AlOOH-NC in diclofenac removal from simulated hospital effluents containing various drugs and organic and inorganic substances. They reported that the magnetic GO/ZIF-8/γ-AlOOH-NC could be promising as an efficient adsorbent for diclofenac removal from wastewater 29 .…”

Section: Introductionmentioning

confidence: 99%

Application of Taguchi method and response surface methodology into the removal of malachite green and auramine-O by NaX nanozeolites

Shojaei

Band

et al. 2021

Sci Rep

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In the present study, the simultaneous removal of malachite green (MG) and auramine-O (AO) dyes from the aqueous solution by NaX nanozeolites in a batch system is investigated. Taguchi method and response surface methodology (RSM) were used to optimize and model dye removal conditions. In order to do so, the effect of various factors (dyes concentration, sonication time, ionic strength, adsorbent dosage, temperature, and pH of the solution) on the amount of dye removal was evaluated by the Taguchi method. Then, the most important factors were chosen and modeled by the RSM method so as to reach the highest percentage of dye removal. The proposed quadratic models to remove both dyes were in good accordance with the actual experimental data. The maximum removal efficiencies of MG and AO dyes in optimal operating conditions were 99.07% and 99.61%, respectively. Also, the coefficients of determination (R2) for test data were 0.9983 and 0.9988 for MG and AO dyes, respectively. The reusability of NaX nanozeolites was evaluated during the adsorption process of MG and AO. The results showed that the adsorption efficiency decreases very little up to five cycles. Moreover, NaX nanozeolites were also applied as adsorbents to remove MG and AO from environmental water samples, and more than 98.1% of both dyes were removed from the solution in optimal conditions.

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Decorating graphene oxide with zeolitic imidazolate framework (ZIF-8) and pseudo-boehmite offers ultra-high adsorption capacity of diclofenac in hospital effluents

Cited by 124 publications

References 72 publications

A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp.

Application of Taguchi method and response surface methodology into the removal of malachite green and auramine-O by NaX nanozeolites

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