Removal of different anionic dyes from aqueous solution by anion exchange membrane

Khan, Muhammad Ali; Khan, Muhammad Imran; Zafar, Shagufta

doi:10.12989/mwt.2017.8.3.259

Cited by 48 publications

(21 citation statements)

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“…This is consistent with the results found by Zuo et al [29] in the preparation of organic-inorganic membranes. The PVDF organic-inorganic membranes exhibited better transport properties, which may be useful in electro-driven separation or for other electrochemical processes [38]. In contrast, the PVDF/2% ZnO-g-PSSA membrane in this paper has a better permselectivity of 0.949, increased by 9.8% compared to PVDF-g-PSSA membranes.…”

Section: Resultsmentioning

confidence: 96%

Preparation of Nano-SiO2/Al2O3/ZnO-Blended PVDF Cation-Exchange Membranes with Improved Membrane Permselectivity and Oxidation Stability

et al. 2018

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Ion exchange membranes are used in practically every industry; however, most of them have defects such as low permeability and poor oxidation resistance. In this paper, cation-exchange membranes were prepared with poly (vinylidene fluoride) (PVDF) blended with nano-SiO2, nano-Al2O3 and nano-ZnO. Sulfonic acid groups were injected into the membrane prepared by styrene grafting and sulfonation. The methods used for characterizing the prepared membranes were Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and electrochemical measurements. Membrane performance, such as the ion exchange capacity (IEC), water uptake (WU), transport number, membrane permselectivity, membrane resistance, functional groups, and morphology were also evaluated. The hydrophilia, IEC, and permselectivity of cation-exchange membranes depended on the nanoparticle content of the membrane matrix. High transport property values were obtained, which increased with increasing nano-SiO2/Al2O3/ZnO weight fractions. Finally, the cation-exchange membranes prepared with 1.5% nano-SiO2, 2.0% nano-Al2O3 or 2.0% nano-ZnO all exhibited excellent membrane properties, including membrane permselectivity (PVDF/2% ZnO-g-PSSA membranes, 94.9%), IEC (PVDF/2% Al2O3-g-PSSA membranes, 2.735 mmol·g−1), and oxidation resistance (PVDF/1.5% SiO2-g-PSSA membranes, 2.33%). They can be used to separate applications in a variety of different areas, such as water treatment, electro-driven separation, heavy metal smelting, or other electrochemical processes.

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Section: Resultsmentioning

confidence: 96%

Preparation of Nano-SiO2/Al2O3/ZnO-Blended PVDF Cation-Exchange Membranes with Improved Membrane Permselectivity and Oxidation Stability

et al. 2018

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“…The values of α and k o were calculated from slope and intercept and are given in Table 2. The double logarithmic plot did not give linear curves for EB removal by BI indicating that the diffusion of dye into pores of the membrane is not the only rate controlling step [30]. It can be concluded that both film and pore diffusion were crucial to different extent in the removal EB from aqueous solution.…”

Section: Bangham Equationmentioning

confidence: 87%

“…It can be seen that the percentage removal of EB from aqueous was found to be decreased with increase in the temperature. It is associated to the decrease in surface activity with increasing temperature [30,33]. Therefore, the adsorption of anionic dye EB onto BI is an exothermic process.…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…Similarly, AEMs was developed for adsorption removal of anionic dye Cibacron Blue 3GA from aqueous solution [27]. In our previous research, we have employed AEMs for removal of different dyes from water via adsorption process [28][29][30][31]. In order to extend it, we report the use of a new AEM (BI) as an adsorbent for removal of EB from aqueous solution at room temperature.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption kinetic, equilibrium and thermodynamic studies of Eosin-B onto anion exchange membrane

Khan¹,

Lashari²,

Khraisheh³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tIn this research, batch adsorption of anionic dye Eosin-B (EB) onto anion exchange membrane (AEM) (BI) from aqueous solution has been investigated at room temperature. The effect of some operating conditions such as contact time, membrane dosage, initial dye concentration and temperature on the percentage removal of EB from aqueous solution has been investigated in detail. Moreover, adsorption kinetics has been analyzed using different models such as pseudo-first-order, pseudo-second-order, Elovich, liquid film diffusion, modified Freundlich and Bangham models. Results show that adsorption data fits to the pseudo-second order kinetics very well. Non-linear isotherms containing two parameters and three parameters isotherms have been applied on experimental data. Different thermodynamic parameters such as Gibb's free energy (DG°), enthalpy (DH°), and entropy (DS°) have been calculated, which shows that adsorption of EB onto anion exchange membrane (B1) is an exothermic process.

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“…These dyes are carcinogenic in nature and contaminate the surface and ground water, thereby, making it unfit for irrigation and drinking. Many treatment techniques have been used for removing dyes from aqueous solution like photodegradation (7) membrane filtration (8), ion exchange (9), electrochemical and adsorption processes (10). Due to its high efficiency, low cost and simple to operate, adsorption is considered an attractive treatment to remove dyes from water.…”

Section: Introductionmentioning

confidence: 99%

Removal of Congo Red Dye From Aqueous Solution Using Eco-Friendly Adsorbent of Nanosilica

Ali

2021

Baghdad Sci.J

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The development of a new, cheap, efficient, and ecofriendly adsorbents has become an important demand for the treatment of waste water, so nano silica is considered a good choice. A sample of nanosilica (NS) was prepared from sodium silicate as precursor and the nonionic surfactant Tween 20 as a template. The prepared sample was characterized using various characterization techniques such as FT-IR, AFM, SEM and EDX analysis. The spectrum of FTIR confirms the presence of silica in the sample, while SEM analysis of sample shows nanostructures with pore ranging (2-100nm). The adsorptive properties of this sample were studied by removing Congo red dye (CR) from aqueous solution. Batch experimental methods were carried out at room temperature (25⁰C) to study the different variables which affect the adsorption process like: NS amount, initial concentration of CR, and contact time. The results were 0.2 g of NS/50 ml of dye solution and 60 min contact time to reach equilibrium. The experimental results at equilibrium were analyzed using Langmuir and Freundlich adsorption isotherms and showed the best fitted with Freundlich model which reveal heterogeneity of the surface of NS adsorbent. Kinetics aspects were also investigated by evaluating parameters from pseudo-first and pseudo-second order reaction equations on adsorption rate which show good fitting with both kinetics equations, but pseudosecond order equation was the best to describe the kinetics parameters.

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Removal of different anionic dyes from aqueous solution by anion exchange membrane

Cited by 48 publications

References 0 publications

Preparation of Nano-SiO2/Al2O3/ZnO-Blended PVDF Cation-Exchange Membranes with Improved Membrane Permselectivity and Oxidation Stability

Preparation of Nano-SiO2/Al2O3/ZnO-Blended PVDF Cation-Exchange Membranes with Improved Membrane Permselectivity and Oxidation Stability

Adsorption kinetic, equilibrium and thermodynamic studies of Eosin-B onto anion exchange membrane

Removal of Congo Red Dye From Aqueous Solution Using Eco-Friendly Adsorbent of Nanosilica

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