Effect of functionalized silica nanoparticles on sulfonated polyethersulfone ion exchange membrane for removal of lead and cadmium ions from aqueous solutions

Berbar, Yassine; Hammache, Z.; Bensaadi, Sofiane; Soukeur, A.; Amara, Mourad; Bruggen, Bart Van der

doi:10.1016/j.jwpe.2019.100953

Cited by 32 publications

(12 citation statements)

References 33 publications

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“…Synthetic dyes comprise an important part of industrial water effluents as they are discharged in abundance by many manufacturing industries. The impact of these dyes on the environment is a major concern because of the potentially carcinogenic properties of these chemicals [1][2][3][4][5][6]. Many treatment methods have been recently developed and applied to remove these dyes from wastewater, such as adsorption, ultrafiltration, reverse osmosis, coagulation, and ion exchange [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Nano-Sized BiFeVOx.y Phases for Removal of Organic Dyes from Wastewaters by Visible Light Photocatalytic Degradation

et al. 2022

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With an increasing demand for industrial dyes in our daily lives, water conditions have become worse. Recently, the removal of such environmentally hazardous pollutants from wastewaters through photocatalytic degradation has been drawing increased attention. Three mesoporous nanophases of BiFeVOx.y as (Bi2FeIIIV1−yO5.5−y) visible light photocatalysts were synthesized in this study using ethylene glycol-citrate sol-gel synthesis combined with microwave- assisted calcination. X-ray diffraction (XRD), differential thermal analysis (DTA), FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy coupled with energy dispersive X-ray spectrometry (SEM-EDS), nitrogen adsorption-desorption isotherms, and UV-Vis diffuse reflectance spectrophotometry (UV-Vis/DRS) were used to characterize the BiFeVOx.y photocatalysts. The visible light-induced photocatalytic activities of the BiFeVOx.y phases were evaluated by the degradation of methylene blue (MB) dye in aqueous solution at pH ~10.0. The results of this study show that the combination of doping strategy with the utilization of advanced synthesis methods plays an important role in improving the structure and surface properties of BiFeVOx.y phases, and thereby enhancing their adsorption and photocatalytic efficiencies. The synthesized mesoporous tetragonal γ-BiFeVOx.y nanophase has been proven to be a potential visible-light photocatalyst for the degradation of organic dyes.

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Section: Introductionmentioning

confidence: 99%

Mesoporous Nano-Sized BiFeVOx.y Phases for Removal of Organic Dyes from Wastewaters by Visible Light Photocatalytic Degradation

et al. 2022

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“…The common technologies for Pb(II) removal have included adsorption (Tian et al 2020), chemical precipitation (Chen et al 2018), electrolysis (Tao et al 2014), ion exchange, membrane separation (Berbar et al 2019), phytoremediation (Wang et al 2018), biological occulation and so on. Adsorption method is considered a suitable techniques for wastewater treatment because it has simple design, good adsorption e ciency and low cost for heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Efficient adsorption of Pb(II) by sodium dodecyl benzene sulfonate intercalated calcium aluminum hydrotalcites: kinetic, isotherm, and mechanisms

Zeng

Tang

Zhou

et al. 2022

Environ Sci Pollut Res

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CaAl-LDHs and sodium dodecyl benzene sulfonate (SDBS) intercalated CaAl-LDHs (SDBS-CaAl-LDHs) was acquired by co-precipitation. The two samples were characterized by XRD, XPS, FT-IR, TG and SEM.The factors affecting adsorption (pH, adsorption time initial concentration) of Pb 2+ by two adsorbents were studied. The results showed that SDBS-CaAl-LDHs has higher adsorption ability for lead ions removal than that of CaAl-LDHs. Kinetic data for lead ions were in keeping with pseudo-2nd-order model, the adsorption isotherms followed Langmuir and Freundlich isotherm model for CaAl-LDHs. The adsorption by SDBS-CaAl-LDHs were in keeping with the pseudo-second-order kinetic and Langmuir model, suggesting lead ions were chemical adsorption. Adsorption was thought to form through Pb species in the precipitates, such as formation of hydroxides and carbonates for lead ions by XRD analysis. Therefore, based on the structural and morphological features, as well as XRD, XPS and SEM, the lead ion adsorption mechanism on SDBS-CaAl-LDHs involved the electrostatic attraction, precipitation, complexation and ion exchange. The Langmuir adsorption capacities for SDBS-CaAl-LDHs were found as 797.63, 828.76, 854.29 mg×g −1 at 293k, 303k, 313k, respectively, when the pH is about 5.2, and thus, making it a highly economical adsorbent for the treatment of contaminated water.

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“…Silanol groups themselves are weak acid sites that cannot be used directly without modification. Silica was compatible with organic substances and was often modified with organic compounds for different purposes such as adsorbent, catalyst, and ion-exchanger [3][4][5]. A silica network can be formed via a sol-gel process consisting of hydrolysis and condensation silica precursors such as silica alkoxides or silica salts with acid or base catalyst.…”

Section: ■ Introductionmentioning

confidence: 99%

“…However, −SO 3 H groups were not firmly attached to SiO 2 and were accessible to leach. Berbar et al [4] used sulfonated polyethersulfone membrane (PES) to increase the acidity of silica materials. However, the sulfonation degree of PES was limited only up to 27%.…”

Section: ■ Introductionmentioning

confidence: 99%

Simple One-Pot Synthesis of Sulfonic-Acid-Functionalized Silica for Effective Catalytic Esterification of Levulinic Acid

2021

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Silica functionalized with sulfonic acid catalyst (SiO2−SO3H) was synthesized through a one-pot method and evaluated as the catalyst material for esterification of levulinic acid in an excess amount of ethanol. Sodium silicate solution was used as the silica source, and then a silane coupling agent, namely GPTMS, was used to incorporate the sulfonic group of 2-aminoethanesulfonic acid (AS) into the silica. Functionalization of AS using GPTMS in the slightly acidic condition has been successfully carried out based on the characterization with FTIR, SEM-EDX, and TGA measurements. Catalyst with the AS to SiO2 molar ratio of 5:6 (SiO2−SO3H(5)) showed the highest acid content (1.02 mmol g–1) and the highest conversion of levulinic acid (70%). The reaction followed pseudo-first-order with the rate constant of 0.00414 min–1. Catalyst material was regenerated by washing with alcohol and water, and the catalyst material can be reused at least for 3 cycles. From this study, the SiO2−SO3H produced from a green process is an effective catalyst to produce esters used in fuel additives.

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Effect of functionalized silica nanoparticles on sulfonated polyethersulfone ion exchange membrane for removal of lead and cadmium ions from aqueous solutions

Cited by 32 publications

References 33 publications

Mesoporous Nano-Sized BiFeVOx.y Phases for Removal of Organic Dyes from Wastewaters by Visible Light Photocatalytic Degradation

Mesoporous Nano-Sized BiFeVOx.y Phases for Removal of Organic Dyes from Wastewaters by Visible Light Photocatalytic Degradation

Efficient adsorption of Pb(II) by sodium dodecyl benzene sulfonate intercalated calcium aluminum hydrotalcites: kinetic, isotherm, and mechanisms

Simple One-Pot Synthesis of Sulfonic-Acid-Functionalized Silica for Effective Catalytic Esterification of Levulinic Acid

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