Application of ZnO and TiO2 nanoparticles coated onto montmorillonite in the presence of H2O2 for efficient removal of cephalexin from aqueous solutions

Khosravi, Rasoul; Zarei, Ahmad; Heidari, Mohsen; Ahmadfazeli, Ali; Vosughi, Mehdi; Fazlzadeh, Mehdi

doi:10.1007/s11814-018-0005-0

Cited by 67 publications

(24 citation statements)

References 36 publications

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“…Thermodynamic parameters of the adsorption process such as enthalpy change (ΔH°), entropy change (ΔS°) and Gibbs free energy change (ΔG°) at temperatures 20, 30, 40 and 50 °C were estimated using the following equations:

where, ΔG° is Gibbs free energy change (J/mol), ΔS° is entropy change (J/mol K), ΔH° is enthalpy change (J/mol), R is the ideal universal gas constant (8.314 J/K mol), and T is the temperature (Kelvin). (ΔH°) and (ΔS°) is determined using the plot of ln K L versus 1/ T [11] , [12] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on cadmium removal from synthetic aqueous solution using garbage ash

et al. 2018

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This data article investigates cadmium removal efficiency using garbage ash as a cheap and effective adsorbent. Influence of different parameters, such as initial cadmium (II) concentration (mg/L), contact time (min), adsorbent dose (gr/L), pH and temperature (°C) were investigated. The characterization data of the garbage ash was determined using SEM analysis. The experimental data indicated that the adsorption of cadmium on garbage ash follows pseudo second order model and Langmuir isotherm model with R2 = 0.99. Also, the maximum adsorption capacity of adsorbent was 100.25 mg/g. Thermodynamic data showed that cadmium adsorption on garbage ash was a spontaneous and endothermic process. Based on acquired data, garbage ash could be proposed as an efficient and low-cost adsorbent for the removal of cadmium from aqueous solution.

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on cadmium removal from synthetic aqueous solution using garbage ash

et al. 2018

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“…After separation, the dark-brown precipitate was washed several times with methanol to remove the residuals. After washing, the final product was dried at 70 °C for 24 h. After preparation of treated PAC and PAC/γ ≈ Fe 2 O 3 nanocomposite, their characterizations were determined using SEM, XRD, and BET techniques [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the alizarin red S adsorption from aqueous solutions on PAC, treated PAC, and PAC/γ≈Fe2O3

et al. 2018

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Three types of adsorbents of powdered activated carbon (PAC), treated PAC, and PAC/γ ≈ Fe2O3 nanocomposite were used. The adsorption experiments were performed in batch conditions. pHZPC of PAC/γ ≈ Fe2O3 was 6.7. As a result, at lower than pHZPC, acidic pH, the adsorption of alizarin red S on PAC/γ ≈ Fe2O3 was favourable. The maximum of alizarin red S adsorption of PAC, treated PAC, and PAC/γ ≈ Fe2O3 was 24.5 mg/g, 57.8 mg/g, and 112.56 mg/g, respectively. The models of Langmuir and pseudo-first-order were a fit model to describe the adsorption isotherm and the Kinetic, respectively. The PAC/γ ≈ Fe2O3 is a promising class of the adsorbents in the adsorption of various dyes from textile effluents.

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“…(1) , (2) , respectively [9] , [10] :

where, C o and C e , and C t are an initial, equilibrium, and final concentration, respectively. V and m are the volume of solution and the adsorbent weight, respectively [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the fluoride adsorption from aqueous solutions by metal-organic frameworks (ZIF-8 and Uio-66)

et al. 2018

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The variables examined were initial fluoride concentration, ZIF-8 and Uio-66 dosage, pH, and contact time. The residual concentration of fluoride was measured by a spectrophotometer. According to BET, the specific surface area of the ZIF-8 and Uio-66 was 1050 m2/g and 800 m2/g, respectively. Total pore volume and average pore diameter of the ZIF-8 and Uio-66 were 0.57 cm3/g, 0.45 cm3/g and 4.5 nm, 3.2 nm, respectively. The best pH for fluoride adsorption was neutral conditions. By increasing the ZIF-8 and Uio-66 dose, the fluoride uptake increased at first, but then decreased. Also, the maximum adsorption for ZIF-8 and Uio-66 was observed in adsorbent dose 0.2 and 0.6 g/L, respectively. The best model for describing kinetic and isotherms of fluoride adsorption were the pseudo-second-order model and Langmuir isotherm model, respectively. Based on the Langmuir model, the adsorption capacity of fluoride by ZIF-8 and Uio-66 was reported to be 25 mg/g and 20 mg/g, respectively.

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Application of ZnO and TiO2 nanoparticles coated onto montmorillonite in the presence of H2O2 for efficient removal of cephalexin from aqueous solutions

Cited by 67 publications

References 36 publications

Data on cadmium removal from synthetic aqueous solution using garbage ash

Data on cadmium removal from synthetic aqueous solution using garbage ash

Data on the alizarin red S adsorption from aqueous solutions on PAC, treated PAC, and PAC/γ≈Fe2O3

Data on the fluoride adsorption from aqueous solutions by metal-organic frameworks (ZIF-8 and Uio-66)

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