Empirical modeling and CCD-based RSM optimization of Cd(II) adsorption from aqueous solution on clinoptilolite and bentonite

Kashi, Negar; Fard, Narges Elmi; Fazaeli, Reza

doi:10.1134/s1070427217060210

Cited by 18 publications

(6 citation statements)

References 19 publications

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“…The purpose of design of experiments (DOE) method is to obtain reliable and appropriate results based on a limited number of observations. From the design and analysis tools of the experiments, in the design of experiments, methods such as the complete factorial method, the Latin square method, are used in the field of analysis of variance tests and its derivatives, and regression analysis is one of the most important tools [25][26][27][28]. In this research, the Design Expert Software (Version 11.0.3) was used for designing the experiments, and the RSM procedure was employed for determining the role of some influential parameters, four crucial factors, including pH, Cu(wt %), IND concentration (mg/L), and the mass of composite (g), were considered.…”

Section: Design Of Experiments (Doe)mentioning

confidence: 99%

Cu(II)/Z4A as an Efficient Nanocomposite for Oxidative Degradation of Indole and Optimization of Effective Factors via RSM Procedure

et al. 2021

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One of the aromatic contaminants in the oil and fuel is indole, which is toxic even at low doses and is considered as air and water pollutant. In this research, the surface of Zeolite 4A (Z4A) was modified by Cu(II)nanoparticles to introduce a desirable nanocomposite (Cu(II)/Z4A) for indole oxidative degradation. The catalysts characterization was carried out by XRD, SEM, EDS, FTIR, and BET/BJH techniques. Response Surface Methodology (RSM) based on Box-Behnken Design (BBD) was employed for studying several effective factors influences in indole oxidation process, including pH, weight percentage of loaded copper (Cu(wt %)), mass of composite, and indole initial concentration (IND concentration). The obtained results by BBD revealed the solution pH was the most pivotal factor in indole oxidative degradation and predicted that under the optimum experimental conditions, the efficiency should be 98.91%. Moreover, GC-mass analysis was applied for evaluating side products, of which results led to some mechanisms and new productions to be found by using indole oxidative degradation. The results also demonstrated that due to indole oxidation and applying the proper solvent (ethanol), some side products were generated capable of acting as a fuel octane number enhancer, which may play a significant role in obtaining more valuable fuels.

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Section: Design Of Experiments (Doe)mentioning

confidence: 99%

Cu(II)/Z4A as an Efficient Nanocomposite for Oxidative Degradation of Indole and Optimization of Effective Factors via RSM Procedure

et al. 2021

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“…These are shown in Table 1. The general equation of the response surface is defined as follows [18]:…”

Section: Design Of the Experimentsmentioning

confidence: 99%

“…A simple and efficient way to synthesize the Ag and Fe nanoparticles by E. cicutarium was reported in this study. The optimization and the modeling [18] of diameter of the bacterial growth inhibition halo were performed using a composite experimental design. Under optimal conditions, with a concentration of Ag and Fe nanoparticles at 399.53 and 397.38 (μg/mL), pH values of 8.20 and 8.39 were found to have the highest amount of growth inhibitory halo diameter.…”

Section: Optimization Of Ph and Concentration Of Ag And Fe Nanoparticlesmentioning

confidence: 99%

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Biosynthesis of Ag and Fe nanoparticles using Erodium cicutarium; study, optimization, and modeling of the antibacterial properties using response surface methodology

et al. 2019

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The present study deals with the preparation of silver (Ag) and iron (Fe) nanoparticles, extracted from AgNO 3 and FeSO 4 ·7H 2 O solutions, respectively. For this, the aqueous extract of Erodium cicutarium was used. The Ag and Fe nanoparticles were characterized by several techniques such as X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), energy dispersive X-ray (EDX) spectrometer, UV-visible, and Fourier transform infrared (FTIR) spectroscopy. FE-SEM images showed that the Ag and Fe particles had nearly spherical morphology with diameters less than 100 nm. Low amounts of impurity and different chemicals in the prepared nanoparticles were confirmed by EDX spectrometers. Furthermore, different functional groups in the nanoparticles were indicated using FTIR spectrum. Antibacterial activity of the Ag and Fe nanoparticles was evaluated by minimum inhibitory concentration (MIC) for E. coli and S. aureus bacteria. Two parameters such as the concentration of Ag and Fe nanoparticles (X 1 ) and pH (X 2 ) were modeled by the use of the response surface methodology (RSM). These experiments were carried out as a central composite design (CCD) consisting of 13 experiments. The results showed that the concentration of Ag and Fe nanoparticles had a better effect on antibacterial activity. Under optimal conditions-with concentrations of Ag and Fe nanoparticles at 399.53 and 397.38 (μg/mL) and pH values of 8.20 and 8.39, respectively-the bacterial growth inhibition halo was found to have the highest diameter. Graphic abstract

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“…This type of wastewater contains a variety of organic and inorganic pollutants such as complex organic molecules and heavy metals. [1][2][3][4][5][6] Complex organic molecules are resistant to biodegradation, which is one of their main environmental concerns. Meanwhile, olive oil industry effluent is one of the effluents with a high percentage of destructive factors in the ecosystem cycle.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of superhydrophobic CoFe₂O₄/polyaniline/covalent organic frameworks/cotton fabric membrane and evaluation of its efficiency in separation of olive oil from water

Fard

Fazaeli

2022

J Chinese Chemical Soc

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Ferrite cobalt (CoFe 2 O 4 )/polyaniline (PANI)/covalent organic frameworks (COF) composite was prepared. The prepared composite was coated on cotton fabric using dip-coating method. Contact angle (CA) and adsorption capacity were investigated to evaluate the hydrophobicity and to measure the adsorption capacity of olive oil by the uncoated cotton fabric (UC) and coated cotton (CC) fabric membranes with particles. Examination of wettability behavior showed that CoFe 2 O 4 /PANI/COF/cotton fabric (CPCC) membrane with a CA of 159.4 is superhydrophobic. Effective parameters such as composite dose (g), oil/water (O/W) ratio (ml), pH, and temperature ( C) on the olive oil from water separation process were studied. The results showed that the coated membrane with a composite dose concentration 0.1 g, O/W ratio of 100/150 ml, pH equal to 7 and temperature of 25 C has separation efficiency of 99.99% for 8 s. According to the results, the highest flux obtained is about above 48,000 Lm À2 h À1 .

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Empirical modeling and CCD-based RSM optimization of Cd(II) adsorption from aqueous solution on clinoptilolite and bentonite

Cited by 18 publications

References 19 publications

Cu(II)/Z4A as an Efficient Nanocomposite for Oxidative Degradation of Indole and Optimization of Effective Factors via RSM Procedure

Cu(II)/Z4A as an Efficient Nanocomposite for Oxidative Degradation of Indole and Optimization of Effective Factors via RSM Procedure

Biosynthesis of Ag and Fe nanoparticles using Erodium cicutarium; study, optimization, and modeling of the antibacterial properties using response surface methodology

Fabrication of superhydrophobic CoFe₂O₄/polyaniline/covalent organic frameworks/cotton fabric membrane and evaluation of its efficiency in separation of olive oil from water

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Empirical modeling and CCD-based RSM optimization of Cd(II) adsorption from aqueous solution on clinoptilolite and bentonite

Cited by 18 publications

References 19 publications

Cu(II)/Z4A as an Efficient Nanocomposite for Oxidative Degradation of Indole and Optimization of Effective Factors via RSM Procedure

Cu(II)/Z4A as an Efficient Nanocomposite for Oxidative Degradation of Indole and Optimization of Effective Factors via RSM Procedure

Biosynthesis of Ag and Fe nanoparticles using Erodium cicutarium; study, optimization, and modeling of the antibacterial properties using response surface methodology

Fabrication of superhydrophobic CoFe2O4/polyaniline/covalent organic frameworks/cotton fabric membrane and evaluation of its efficiency in separation of olive oil from water

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Product

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Fabrication of superhydrophobic CoFe₂O₄/polyaniline/covalent organic frameworks/cotton fabric membrane and evaluation of its efficiency in separation of olive oil from water