Nano-scale modification of polysulfone membrane matrix and the surface for the separation of chromium ions from water

Habibi, Samin; Nematollahzadeh, Ali; Mousavi, Seyyed Abbas

doi:10.1016/j.cej.2015.01.047

Cited by 104 publications

(37 citation statements)

References 34 publications

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“…Figure 10 indicates the percentage removal of chromium in tannery effluent at pH 5, pH 7, and pH 9 during various time intervals. The decrease in chromium rejection percentage with time for the studied pH at 5, 7, and 9 may be presumably due to the saturation of the membranes active sites with chromium ions (Habibi et al 2015). On comparing the values obtained, it was clear that the removal of Cr was the highest in neutral medium than the acidic medium and was the least at basic medium.…”

Section: Effect Of Phmentioning

confidence: 85%

Removal of heavy metal chromium from tannery effluent using ultrafiltration membrane

Vinodhini¹,

Sudha²

2016

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The present study was aimed to fabricate a novel ultrafiltration membrane using cellulose acetate, nanochitosan, and polyethylene glycol of ratio 1:2:2 by phase inversion method. Analytical techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffractometer (XRD), and scanning electron microscopy (SEM) have been employed to characterize the prepared membrane. FTIR and XRD results revealed the formation of blended membrane with increased amorphous nature. SEM studies exhibited the rough surface with numerous pores. The prepared membrane was also characterized for its ultrafiltration performance by membrane compaction, pure water flux, water content, and porosity. The results showed that the membrane obtained a pure water flux of 25.32 l/m 2 h. The water content was found to be 24 % and a high porosity of 83 % was obtained which showed the membrane's high hydrophilicity and more porous nature. The main focus of the present study was toxic hexavalent chromium removal from tannery effluent using the prepared hydrophilic membrane, which causes various adverse effects. The effect of pH of the solution (viz., pH 5, 7, and 9), membrane thickness (0.1 and 0.2 mm), and the applied pressure (50 and 100 kPa) were studied which are the key factors in determining the efficiency of the prepared membrane in remediation of tannery effluent. The results showed high percentage removal of chromium at pH 7 using 0.2 mm thickness at 100 kPa. The physicochemical parameters of the tannery effluent were also found to be reduced.

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Section: Effect Of Phmentioning

confidence: 85%

Removal of heavy metal chromium from tannery effluent using ultrafiltration membrane

Vinodhini¹,

Sudha²

2016

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“…[25] As shown in Table 2, both blank and the imprinted membranes exhibited sorption capability toward naphthalene molecules but to a different extent. For this purpose, permeation experiments were carried out using the filtration setup to investigate imprinting factor (IF) and selectivity (S) of the membranes.…”

Section: Binding Studiesmentioning

confidence: 98%

“…The separation percentage was calculated using the following equation: [18] where R(%) is the separation percentage, C p is the naphthalene concentration (mg/L) in permeated solution, and C f in naphthalene concentration (mg/L) in feed solution.…”

Section: Naphthalene Sorption By Membrane Filtrationmentioning

confidence: 99%

Molecularly imprinted polymer membrane for the removal of naphthalene from petrochemical wastewater streams

Ghasemi

Nematollahzadeh

2017

Adv Polym Technol

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The aim of this work was the preparation of molecularly imprinted membrane (MiM) using polysulfone (PSf) polymer for targeted removal of polycyclic aromatic hydrocarbons from petrochemical wastewater. Naphthalene was opted as a model pollutant, and the imprinted membrane was fabricated by phase inversion technique.Nonimprinted membrane (NiM) was also prepared in the absence of naphthalene and used as a reference. The polymers (MiM/NiM) were systematically characterized using different characterization techniques. The selectivity property of the membranes was evaluated by their ability in separation of naphthalene through filtration tests. Results showed that in comparison with NiM, the imprinted membrane exhibits higher affinity toward naphthalene molecules. It was found that the selectively of MiM is 2.27-fold more than that of the corresponding NiM. This finding can be encouraging from industrial applications points of view. K E Y W O R D Smembrane, molecularly imprinted polymer, naphthalene, petrochemical wastewater, separation How to cite this article: Ghasemi S, Nematollahzadeh A. Molecularly imprinted polymer membrane for the removal of naphthalene from petrochemical wastewater streams.

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“…For example, the polysulphone (Psf) membrane is widely used for this purpose. To increase the hydrophilicity of the membrane, it was doped with SiO 2 nanoparticles (PSf/SiO 2 ), thus enhancing the chromium flux through the membrane [137].…”

Section: Nanoadsorbents For Chromium Remediationmentioning

confidence: 99%

Removal of chromium from industrial effluents using nanotechnology: a review

Mitra

Sarkar

Sen

2017

Nanotechnol. Environ. Eng.

138

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The presence of chromium in industrial effluents has become a huge problem worldwide as hexavalent chromium is highly toxic to animals due to its ability to generate reactive oxygen species in cells. The trivalent state of chromium, on the other hand, is significantly less toxic and also serves as an essential element in trace amounts. When industries such as electroplating, tannery, dyeing and others release their effluents into water bodies, hexavalent chromium enters the food chain and, consequently, reaches humans in a biomagnified form. Many remediation processes for removal of hexavalent chromium have been researched and reviewed extensively. These include chemical reduction to trivalent chromium, solvent extraction, chelation and adsorption, among others. It has been generally concluded that adsorption (and/or subsequent reduction) of hexavalent chromium is the best method. However, relatively little is known about the potential of using nanoparticles as adsorbents for the removal of hexavalent chromium from industrial effluents. This method of nanoremediation is more effective than conventional remediation methods and is cost-effective for the industry in the long run. This article reviews the various remediation methods of hexavalent chromium, with emphasis on the field of nanoremediation.

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Nano-scale modification of polysulfone membrane matrix and the surface for the separation of chromium ions from water

Cited by 104 publications

References 34 publications

Removal of heavy metal chromium from tannery effluent using ultrafiltration membrane

Removal of heavy metal chromium from tannery effluent using ultrafiltration membrane

Molecularly imprinted polymer membrane for the removal of naphthalene from petrochemical wastewater streams

Removal of chromium from industrial effluents using nanotechnology: a review

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