Adsorption of fluoride over a metal organic framework Uio-66 functionalized with amine groups and optimization with response surface methodology

Massoudinejad, Mohamadreza; Ghaderpoori, Mansour; Shahsavani, Abbas; Amini, Mostafa M.

doi:10.1016/j.molliq.2016.05.087

Cited by 138 publications

(54 citation statements)

References 51 publications

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“…In the present study, the obtained kinetic data from batch studies have been analyzed by using models of pseudo-first order, pseudo-second order, intraparticle diffusion, and the Elovich model. The linear equations of isotherms and kinetics models are given in Table 1 [17,18].…”

Section: Methodsmentioning

confidence: 99%

Application Of Modified Maize Hull For Removal Of Cu(II) Ions From Aqueous Solutions

Ghasemi

Mohseni-Bandpei

Ghaderpoori

et al. 2017

Environ. Protect. Eng.

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Discharge of industrial waste containing heavy metals to the environment is a main concern because of their toxicity to many life forms. Adsorption process is one of the conventional methods in order to adsorb heavy metals from wastewater effluents. Therefore, the removal of Cu(II) from aquatic solutions using modified maize hull was investigated. All experiments were performed in batch conditions. The residual Cu(II) concentration was measured by AAS. Upon increasing the adsorbent dosage, pH, and contact time and decreasing Cu(II) concentration, the removal efficiency of Cu(II) ions increased. In optimum conditions, 50% of copper was removed by modified maize hull. The experimental data were best fitted by the Langmuir type 2 model and the adsorption kinetic model followed a pseudo-second order type 1 model. It seems that the use of the modified maize hull to remove Cu(II) ions is very suitable, low-cost, and efficient.

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Section: Methodsmentioning

confidence: 99%

Application Of Modified Maize Hull For Removal Of Cu(II) Ions From Aqueous Solutions

Ghasemi

Mohseni-Bandpei

Ghaderpoori

et al. 2017

Environ. Protect. Eng.

Self Cite

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“…At different concentrations, difference was observed in the reaction speed constants. This is due to various photocatalytic degradation mechanisms or the competition between degradation of the reactant and intermediate products [49].…”

Section: Reaction Kineticsmentioning

confidence: 99%

Photocatalytic degradation of aspirin from aqueous solutions using the UV/ZnO process: modelling, analysis and optimization by response surface methodology (RSM)

Karimi¹,

Baneshi²,

Malakootian³

2019

Desalination and Water Treatment

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a b s t r a c tThe aim of this study was to optimize aspirin removal from aqueous solutions by the UV/ ZnO photocatalytic process. To this end, the RSM software was used to design the test method. The influence of effective parameters including aspirin initial concentration (10-100 mg/L), pH solution (3-11), contact time (10-120 min) and ZnO catalyst dose (100-600 mg/L) was investigated in this process. Based on the results, the highest efficiency of aspirin removal equal to 83.11% was obtained in optimum conditions including solution pH = 5.05, contact time = 90.50 min, ZnO catalyst dose = 375.16 mg/L, and aspirin initial concentration = 33.84 mg/L. Increasing chloride and phosphate ion concentration in a synthetic solution under optimum conditions caused increased and decreased UV/ZnO process efficiency, respectively. The kinetic studies showed that the pseudo-first-order model had the highest correlation with aspirin removal using the UV/ZnO photocatalytic process (R 2 = 0.99). The UV/ZnO photocatalytic process has a high potential for aspirin removal from aqueous solutions and can be used as a convenient option with high performance, low cost and easy operation on an operational scale.

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“…From the various isotherm equations that are used for analysis absorption data in aqueous environments, the Langmuir and Freundlich isotherms are more common (Massoudinejad et al, 2016). The linear form of these isotherms is shown as equation …”

Section: Isotherm and Kinetic Studiesmentioning

confidence: 99%

Performance of granular activated carbon/nanoscale zero valent iron for removal of humic substances from aqueous solution based on Experimental Design and Response Surface Modeling

Yazdanbakhsh¹,

Hashempour²,

Ghaderpouri³

2017

Global NEST Journal

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Graphic Abstract AbstractResponse surface methodology has been used to design experiments and to optimize the effect of independent variables responsible for higher adsorption of humic substances by activated carbon supported nanoscale zerovalent iron from aqueous solutions. The variables of initial concentration, time, pH, adsorbent dose was examined. The characterization of NZVI/AC was carried out by SEM-EDS and XRD analysis. The adsorption isotherms and kinetics of humic substances on AC and NZVI/AC were studied. The findings showed that the particle size of synthesis NZVI were in the range 20-50nm. The experimental data followed the Langmuir isotherm and pseudo-second kinetic model. For AC, optimum conditions of initial concentration, pH, contact time, and adsorbent dose were 5 mg L , respectively. Predicted removal efficiency by Box-Benken models for activated carbon and NZVI were 60 and 100 percent, respectively.

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Adsorption of fluoride over a metal organic framework Uio-66 functionalized with amine groups and optimization with response surface methodology

Cited by 138 publications

References 51 publications

Application Of Modified Maize Hull For Removal Of Cu(II) Ions From Aqueous Solutions

Application Of Modified Maize Hull For Removal Of Cu(II) Ions From Aqueous Solutions

Photocatalytic degradation of aspirin from aqueous solutions using the UV/ZnO process: modelling, analysis and optimization by response surface methodology (RSM)

Performance of granular activated carbon/nanoscale zero valent iron for removal of humic substances from aqueous solution based on Experimental Design and Response Surface Modeling

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