Selective Anion Binding from Water Using Soluble Polymers

Birnbaum, Eva R.; Rau, Karen; Sauer, Nancy N.

doi:10.1081/ss-120016581

Cited by 35 publications

(18 citation statements)

References 10 publications

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“…In the context of improving the processes for water treatment containing organic and inorganic solutes, dendrite polymers are used as water-soluble ligands for purification purposes. 163,164 The use of nanofibers and composite nanostructure membranes can help in degrading a wide spectrum of organic and inorganic contaminants in real field applications as shown in Figure 12.…”

Section: Removal Of Other Pollutantsmentioning

confidence: 99%

Water purification by polymer nanocomposites: an overview

2017

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In recent years, polymer nanocomposites (PNCs) have attracted the attention of scientists and techno logists in water purification due to improved processability, surface area, stability, tunable properties, and cost effectiveness. PNCs showed fast deco ntamination ability with high sele ctivity to remove various pollutants. This review provides uptodate information about the importance of PNCs in the removal of metal ions, dyes, and micro organism from polluted water. The general methodology for preparation and properties of nanocomposites with reference to PNCs is given. Different adsorption isotherm and kinetic models along with thermodynamic parameters for adsorption have been discussed.

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Section: Removal Of Other Pollutantsmentioning

confidence: 99%

Water purification by polymer nanocomposites: an overview

2017

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“…In the context of improving the UF processes for water treatment containing organic and inorganic solutes, dendritic polymers are used as water-soluble ligands for, radionuclides and inorganic anions (Ottaviani et al 2000, Birnbaum et al 2003. Nearly complete reduction of 4-nitrophenol was seen when using a composite membrane composed of alumina and polymers through layer-by-layer adsorption of polyelectrolytes and citrate-stabilized Au nanoparticles (Dotzauer et al 2006).…”

Section: Removal Of Organic Contaminantsmentioning

confidence: 99%

A review of nanomaterials based membranes for removal of contaminants from polluted waters

Amin¹,

Alazba²

2014

Membr. Water Treat.

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Safe water has becoming a competitive resource in many parts of the world due to increasing population, prolonged droughts, climate change etc. The development of economical and stable materials and methods for providing the fresh water in adequate amounts is the need of the water industry. Nanomaterials have unique characteristics e.g., large surface areas, size, shape, and dimensions etc. that make them particularly attractive for removing various contaminants from polluted waters. Nanotechnology based multifunctional and highly efficient membrane processes are providing affordable solutions in the new era that do not rely on large infrastructures or centralizes systems. The objective of the current study is to review the possible applications of the membrane based nanomaterials/composites for the removal of various contaminations from polluted waters. The article will briefly overview the availability and practice of different nanomaterials based membranes for removal of bacteria and viruses, organic compounds and inorganic solutes etc. present in surface water, ground water, seawater and/or industrial water. Finally, recommendations are made based on the current practices of nanofiltration membranes in water industry for a stand-alone membrane filtration system in removing various types of contaminants from polluted waters.

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“…This dendrimer receptor system was found to act as a water-soluble chelating ion exchange material and selectively complex Co(II), Cu(II), Hg(II), Ni(II), Pb(II) and Zn(II) in the presence of competing complexing agents such as ammonia, tartrate, triethanolamine and sodium nitrate. In a similar fashion, Birnbaum and co-workers have employed PAMAM and poly(ethylene imine) dendrimers modified with ligands or hydrogen bonding groups [83]. These two dendrimer systems were modified with three types of receptor units: (i) alcohols, (ii) carboxylic acids and (iii) pyrazines to afford six dendrimers in total and were shown to be effective at complexing the oxyanions arsenate, chromate and phosphate, even in the presence of competing chloride ions.…”

Section: Selective Dendritic Complexation Agents For Heavy Metal Ionsmentioning

confidence: 99%