Preparation of membranes based on high-density polyethylene graft copolymers for phosphate anion removal

Senna, Magdy M.; Abdel-Moneam, Yasser K.; Gamal, Osama; Al-Arifi, A. S. N.

doi:10.1016/j.jiec.2012.06.022

Cited by 24 publications

(12 citation statements)

References 21 publications

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“…The adsorption capacity determined by the dynamic method was 65 and 77% for Fig. 2 Effect of the initial phosphate concentration on the uptake behavior of HDPE-g-PAAm treated with ethylenediamine/phthalic unhydride and loaded with Cu(II) (Senna et al 2013) membranes and spheres, respectively, of the value obtained static method results.…”

Section: Polymeric Membranes For Membrane Adsorptionmentioning

confidence: 96%

“…Senna et al (2013) prepared membranes from a graftcopolymer, polyethylene (HDPE) substrate grafted by acrylamide using radiation, with functional groups for the removal of metals and phosphate anions. For the removal of phosphate ions from aqueous solutions, a chemically modified membrane loaded with Cu 2+ was used.…”

Section: Polymeric Membranes For Membrane Adsorptionmentioning

confidence: 99%

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Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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Application of polymeric membranes for the adsorption of hazardous pollutants may lead to the development of next-generation reusable and portable water purification appliances. Membranes for membrane adsorption (MA) have the dual function of membrane filtration and adsorption to be very effective to remove trace amounts of pollutants such as cationic heavy metals, anionic phosphates and nitrates. In this review article, recent progresses in the development of MA membranes are surveyed. In addition, recent progresses in the development of advanced adsorbents such as nanoparticles are summarized, since they are potentially useful as fillers in the host membrane to enhance its performance. The future directions of R&D in this field are also shown in the conclusion section.

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Section: Polymeric Membranes For Membrane Adsorptionmentioning

confidence: 96%

Section: Polymeric Membranes For Membrane Adsorptionmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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“…Also, crosslinks, which may have been induced by radiation in PE, increased the stress and decreased the strain. On the other hand, mechanical properties in general are controlled by three morphological factors: the number of tie molecules, the lamellar thickness, and molecular chain entanglement . The grafted chains increased the tie molecules and increased the entanglement in the PE chains.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of reverse‐osmosis membranes for the desalination of underground water via the γ‐radiation grafting of acrylic acid onto polyethylene films

Oraby

Senna

Elsayed

et al. 2017

J of Applied Polymer Sci

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Research has been devoted to the desalination of saline water to fresh water suitable for human demands because of the shortage of water in some countries. Therefore, in this study, reverse-osmosis membranes were prepared via the g-radiation graft copolymerization of acrylic acid onto high-density and low-density polyethylene. The factors that could affect the grafting process, such as the solvent type, monomer and inhibitor concentration, and irradiation dose, were investigated to determine the optimum conditions for radiation grafting. The polyethylene grafted acrylic acid copolymers (PAAc-g-PE) graft copolymer was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and mechanical, rheological, and thermal property testing to illustrate the possibility of practical use in water desalination. The prepared grafted membranes showed significant results in the reverse-osmosis desalination method with underground saline water. The factors affecting the desalination of water, such as the water flux, operation time, and grafting percentage, were studied.

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“…[20] Among the afore-mentioned techniques, membrane separation technology has relatively lower efficiency. [21] Adsorption is an efficient and economical method for phosphate removal. The adsorbed phosphate can be desorbed from the surface of the adsorbents to attain further phosphate recovery.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and phosphate removal and recovery of magnetic MnFe₂O₄nano-particles as adsorbents

Xia

et al. 2015

Environmental Technology

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Phosphate removal is an important method for controlling eutrophication in bodies of water. Adsorption is an effective phosphate removal approach. In this research, the adsorbent, namely, MnFe2O4, was prepared through the improved co-precipitation method and investigated in terms of phosphate removal. MnFe2O4 was characterized by scanning electron microscopy, vibrating sample magnetometry, X-ray diffraction, and Fourier transform infrared spectroscopy. Phosphate adsorption by MnFe2O4, desorption of adsorbed MnFe2O4 with the regeneration of desorbed MnFe2O4, and phosphate recovery were researched. Experimental results showed that adding the appropriate amount of polyethylene glycol to MnFe2O4 precursors during preparation inhibited the agglomeration of MnFe2O4 between particles because of the magnetic property of MnFe2O4 etc. High crystallinity and strong magnetism were achieved by MnFe2O4 at low temperatures. Average particle size was 5.1 nm. The hysteresis loops confirmed the ferrimagnetic behaviour of MnFe2O4 with a high saturation magnetization (i.e. 26.27 emu/g). The adsorption mechanism of phosphate was mainly physical. The prepared MnFe2O4 had a spinel structure. The proposed technique achieved a phosphate removal rate of 96.06%. A considerable amount of phosphate was desorbed from the adsorbed MnFe2O4 in 15 w/v% NaOH solution. The adsorption capacity of the desorbed MnFe2O4 could be restored to 96.73% in 10 w/v% NaNO3 solution through ion exchange. A sustainable phosphate source was recovered via hydroxyapatite crystallization in the desorption solution, which contained an abundant amount of phosphate as seed for suitable recovery condition. This finding suggested that MnFe2O4 could be a promising adsorbent for efficient phosphate removal.

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Preparation of membranes based on high-density polyethylene graft copolymers for phosphate anion removal

Cited by 24 publications

References 21 publications

Removal of heavy metals and pollutants by membrane adsorption techniques

Removal of heavy metals and pollutants by membrane adsorption techniques

Fabrication of reverse‐osmosis membranes for the desalination of underground water via the γ‐radiation grafting of acrylic acid onto polyethylene films

Preparation, characterization, and phosphate removal and recovery of magnetic MnFe₂O₄nano-particles as adsorbents

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Preparation of membranes based on high-density polyethylene graft copolymers for phosphate anion removal

Cited by 24 publications

References 21 publications

Removal of heavy metals and pollutants by membrane adsorption techniques

Removal of heavy metals and pollutants by membrane adsorption techniques

Fabrication of reverse‐osmosis membranes for the desalination of underground water via the γ‐radiation grafting of acrylic acid onto polyethylene films

Preparation, characterization, and phosphate removal and recovery of magnetic MnFe2O4nano-particles as adsorbents

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Product

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Preparation, characterization, and phosphate removal and recovery of magnetic MnFe₂O₄nano-particles as adsorbents