Comparison of Novel and Patented Silica-Polyamine Composite Materials as Aqueous Heavy Metal Ion Recovery Materials

Beatty, Susan T.; Fischer, Robert J.; Rosenberg, Edward; Pang, David

doi:10.1081/ss-100100801

Cited by 38 publications

(18 citation statements)

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“…The applicability for copper remediation and/or copper concentration purposes is strongly dependent on the capacity to regenerate and reuse the coating material with sustained performance . A porous silica gel with surface bound PEI has previously been shown to have regenerative capacity in waste water applications after several cycles of uptake and release by acid elution . The copper chelating property of GA‐crosslinked PEI on a cation‐exchange resin has also been shown to withstand regeneration using different acids .…”

Section: Resultsmentioning

confidence: 99%

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Glutaraldehyde‐crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings

Lindén

Larsson

Kaur

et al. 2016

J of Applied Polymer Sci

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Nano-thin coatings of glutaraldehyde (GA)-crosslinked polyethyleneimine (PEI) are extremely selective and effective in binding copper from seawater. Here it was demonstrated that GA-PEI performs significantly different from PEI. The copper-selectivity of self-assembled PEI coatings on silicon substrates was greatly improved by GA-crosslinking. After submersion in artificial seawater containing 200 ppb copper and equimolar amounts of 11 competing ions only copper and trace amounts of Zn were detected in the GA-crosslinked coatings, while for non-crosslinked PEI there was about 30% Zn present relative to copper. The coatings were demonstrated to be highly stable under acidic conditions and retained their copper-binding selectivity after repeated cycles of binding and acid-mediated elution. After self-assembly of the GA-crosslinked coating on mesoporous diatomaceous earth particles, significant amounts of copper could be extracted from 200 ppb in artificial seawater and eluted under acidic pH. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43954. © 2016 Wiley Periodicals, Inc

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Section: Resultsmentioning

confidence: 99%

“…Polyethyleneimine (PEI) effectively binds copper and other metals in basic and mildly acidic conditions. However, the binding efficacy and specificity varies between reports .…”

Section: Introductionmentioning

confidence: 99%

Glutaraldehyde‐crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings

Lindén

Larsson

Kaur

et al. 2016

J of Applied Polymer Sci

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“…No quenching is observed with 1 in solution over a range of concentrations, and using Ni 2+ and Zn 2+ solutions with 1 on BP‐1, quenching is observed but not as efficiently as with copper (Figure ). The degree of quenching qualitatively follows the relative binding affinity of the three metals (Cu 2+ >Ni 2+ ∼ Zn 2+ ) on the SPC BP‐1 …”

Section: Resultsmentioning

confidence: 99%

Luminescence Quenching and Enhancement by Adsorbed Metal Ions with Ruthenium Diimine Complexes Immobilized on Silica Polyamine Composites

Rosenberg

Abbott

Ross

et al. 2016

Macromolecular Symposia

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Summary Luminescent ruthenium diimine complexes have been covalently bound to the surface of a silica polyamine composite (SPC) using peptide coupling agents. The loading of the complexes using this route is quite low (~0.01–0.04 mmol/g) leaving sufficient surface amines to coordinate added metal ions. When the composite particles containing the Ru complexes are exposed to solutions of Cu2+, Ni2+ or Zn2+, luminescence is quenched with efficiencies that follow concentration dependence and the relative binding affinities of the ions. When heavy metal ions such as mercury or lead are adsorbed onto the same surface, luminescence is enhanced by a factor of ~3.5. When the complexes are exposed to these metals in solution, no quenching or enhancement is observed. Both phenomena were shown to be the result of adsorption of the cations onto the polyamine surface by using the Stern-Volmer relationship. The mechanism of both quenching and enhancement is discussed and the options for further development of this novel metal sensing technique are presented.

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“…Furthermore, the elastic nature of polymer matrices limits their use in packed column systems, because the frequent swings between shrinking and swelling during the adsorptionregeneration cycles can lead to a short lifetime and increase the requirement of dead volume in plant design. Recently, the Rosenberg Group reported the synthesis of hydrophilic silica-polyallylamine composites (SPC) and their application for removing toxic metal cations, such as Cu 2+ and Ni 2+ [7][8][9]. The use of SPC as adsorbent matrices for the removal of hazardous anions and non-ions, however, has not been explored.…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of boron acid by N-methyl-d-glucamine functionalized silica–polyallylamine composites and its adsorption mechanism

et al. 2011

Journal of Colloid and Interface Science

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Comparison of Novel and Patented Silica-Polyamine Composite Materials as Aqueous Heavy Metal Ion Recovery Materials

Cited by 38 publications

References 10 publications

Glutaraldehyde‐crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings

Glutaraldehyde‐crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings

Luminescence Quenching and Enhancement by Adsorbed Metal Ions with Ruthenium Diimine Complexes Immobilized on Silica Polyamine Composites

Efficient removal of boron acid by N-methyl-d-glucamine functionalized silica–polyallylamine composites and its adsorption mechanism

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