Fouling resistant functional blend membrane for removal of organic matter and heavy metal ions

Lavanya, C.; Balakrishna, R. Geetha; Soontarapa, Khantong; Padaki, Mahesh

doi:10.1016/j.jenvman.2018.11.093

Cited by 43 publications

(26 citation statements)

References 45 publications

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“…Membrane filtration, such as ultrafiltration and reverse osmosis, involves the physical separation of dissolved dye molecules from effluent through permeable membranes under pressure and exhibit a good ability in separating solutes from wastewater. The major disadvantages of this process are the cost of the filter media and the occurrence of clogging, that most likely occurs in the case of build-up of a concentrated dye layer, which gradually reduces the overall removal efficiency with a lower flux rate [47]. Other physical separation options include irradiation [48] and electrokinetic coagulation [49].…”

Section: Advantages Of Adsorption In Wastewater Treatmentmentioning

confidence: 99%

Production and applications of activated carbons as adsorbents from olive stones

Saleem

Shahid

Hijab

et al. 2019

Biomass Conv. Bioref.

359

164

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Olive stones have been widely used as a renewable energy biowaste source. As they are rich in elemental carbon (40-45 wt%), much research focussed on effectively converting olive stones, as precursors, into activated carbon adsorbents. However, only a few studies have concentrated on summarising the various techniques used to produce activated carbon from olive stone. This article reviews the research undertaken on the production and application of activated carbon as an adsorbent from olive stones for wastewater treatment. Various physical, chemical and physico-chemical treatments to remove heavy metals, organics and dyes are discussed, and the resultant adsorption capacities are reported. In several cases, very high adsorption capacities are recorded. Finally, the future prospects of these materials as adsorbents are discussed, and after further development work, olive stone-derived activated carbons have great potential especially in the area of organic polluted wastewaters.

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Section: Advantages Of Adsorption In Wastewater Treatmentmentioning

confidence: 99%

Production and applications of activated carbons as adsorbents from olive stones

Saleem

Shahid

Hijab

et al. 2019

Biomass Conv. Bioref.

359

164

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“…Different types of membranes like Nano-filtration (NF), Reverse Osmosis (RO) and Ultra-filtration (UF) are used for removal of colloids, soluble organic particles, desalination and for heavy metals respectively 25 . NF is a pressure driven membrane process worked on Donnan exclusion and steric effect with improved transport phenomenon and most economical for the rejection of heavy metals from industrial wastewater 4 , 21 , 26 – 29 . The heavy metals in aqueous solution cannot be rejected by using simple Nanofiltration membrane whereas, complexation NF is well appropriate for the rejection of heavy metal.…”

Section: Introductionmentioning

confidence: 99%

“…Gum Arabic modified CA membranes can open up new possibilities in enhancing the permeability, hydrophilicity and anti-fouling properties.Environmental pollution particularly in water has become real human health issue, due to hasty development of industrialization and urbanization 1 . Water a "Vehicle of Nature" is an essential part of our life, micro and macromolecular functions are carried out in the presence of water 2 .Numerous harmful overwhelming metals such as lead (Pb II), mercury (Hg II), zinc (Zn II), cadmium (Cd II) and arsenic (Ar II) are discharged from natural source of water [3][4][5] . These pollutants come from industrial reactions like manufacturing of batteries, electroplating and mining etc.…”

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confidence: 99%

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Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water

Idress

Zaidi

Sabir

et al. 2021

Sci Rep

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This study investigates the removal of Pb(II) using polymer matrix membranes, cellulose acetate/vinyl triethoxysilane modified graphene oxide and gum Arabic (GuA) membranes. These complexation-NF membranes were successfully synthesized via dissolution casting method for better transport phenomenon. The varied concentrations of GuA were induced in the polymer matrix membrane. The prepared membranes M-GuA2–M-GuA10 were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscope and bio-fouling studies. Thermal stability of the membranes was determined by thermogravimetric analysis under nitrogen atmosphere. Dead end nanofiltration was carried out to study the perm- selectivity of all the membranes under varied pressure and concentration of Pb(NO3)2. The complexation-NF membrane performances were significantly improved after the addition of GuA in the polymer matrix membrane system. M-GuA8 membrane showed optimum result of permeation flux 8.6 l m−2 h−1. Rejection of Pb(II) ions was observed to be around 97.6% at pH 9 for all the membranes due to electrostatic interaction between CA and Gum Arabic. Moreover, with the passage of time, the rate of adsorption was also increased up to 15.7 mg g−1 until steady state was attained. Gum Arabic modified CA membranes can open up new possibilities in enhancing the permeability, hydrophilicity and anti-fouling properties.

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“…The developed membrane showed sufficient rejection of 98-99% under different feed concentrations. The removal of heavy metal ions and humic acid by CA and poly (methyl vinyl ether-alt-maleic acid) (PMVEMA) blend membranes were investigated by Lavanya et al [14]. The blend membranes were very effective in removing heavy metal ions and humic acid simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Blend Hydrophilic Polyetherimide-Cellulose Acetate Hollow Fiber Membrane for Oily Wastewater Treatment

Nazarian

Mansourizadeh

Abbasi

2019

AMST

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Membrane separation is known as an efficient technique for oily wastewater treatment. In the present study, cellulose acetate (CA) was introduced into the polyetherimide (PEI) solution in order to enhance hydrophilicity and the membrane structure for oil–water separation. The hollow fiber membranes were prepared via a phase-inversion process. The membranes were characterized by N2 permeation test, water contact angle, pure water flux and field emission scanning electron microscopy (FESEM). The blend PEI-CA membrane presented larger finger-likes morphology with a thicker outer skin layer. From N2 permeation test, the blend membrane showed effective surface porosity of 697 m-1 and mean pore size of 4.5 nm. The higher water flux and lower resistance of the blend PEI-CA membrane were related to the higher hydrophilicity and the open structure. Due to small pore sizes and enhanced hydrophilicity, the blend membrane showed a stable oil rejection of over 98% and water flux of 18 L/m2 h after 100 min of the separation operation. The developed PEI-CA membrane can potentially be applied in petrochemical and refinery industries for oily wastewater treatment.

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Fouling resistant functional blend membrane for removal of organic matter and heavy metal ions

Cited by 43 publications

References 45 publications

Production and applications of activated carbons as adsorbents from olive stones

Production and applications of activated carbons as adsorbents from olive stones

Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water

Preparation of Blend Hydrophilic Polyetherimide-Cellulose Acetate Hollow Fiber Membrane for Oily Wastewater Treatment

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