Results 151 to 160 of about 336,737 (201)

Metal ion induced-assembly of amylose in aqueous solution

Carbohydrate Polymers, 2014
Cu(2+)/amylose assemblies of various sizes were prepared through the Cu(2+) ion induced-assembly of amylose. These assembly structures were characterized via transmission electronic microscopy (TEM), scanning electronic microscopy (SEM), dynamic light scattering (DLS), (1)H NMR analysis, fluorescence spectroscopy (FL) and UV-vis absorption spectroscopy
Yinhui, Li, Shudong, Lin, Jiwen, Hu, Guojun, Liu, Gangwei, Zhang, Yuanyuan, Tu, Hongsheng, Luo, Wei, Li   +7 more
openaire   +2 more sources

Coordination numbers of alkali metal ions in aqueous solutions

Biophysical Chemistry, 2006
The level of complexity with which any biological ion interaction mechanism can be investigated, whether it is a binding mechanism in proteins or a permeation mechanism in ion channels, is invariably limited by the state-of-the-art of our understanding of the characteristic properties of ion solvation.
Sameer, Varma, Susan B, Rempe
openaire   +2 more sources

Removal of Metal Ions from Aqueous Solution by Cellulose Ion Exchangers

Separation Science and Technology, 1999
The sorption of metal ions [Cd(II), Cu(II), Co(II), Pb(II), Zn(II), Cr(III), V(IV), V(V)] from aqueous solution by Whatman cellulose ion exchangers was investigated as a function of pH.
Kabay, N, Demircioglu, M, Yayli, S, Yuksel, M, Saglam, M, Levison, PR   +5 more
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Purification of aqueous solutions of metal ions by ultrafiltration

Desalination, 2007
Abstract This study gathers experimental results that illustrate the efficiency of ultrafiltration in the purification of aqueous solutions of metal ions beforehand complexed on water-soluble macromolecular substrate. For this purpose, a commercial polyethersulfone ultrafiltration membrane is employed in a magnetic stirred cell operating in a batch ...
Scheherazade Mimoune, Rafik Eddine Belazzougui, Farouk Amrani   +2 more
openaire   +1 more source

Biosorption of Metal Ions from Aqueous Solutions

Separation Science and Technology, 1997
Abstract Copper biosorption from aqueous solutions by calcium alginate is reported in this paper. The experimental section includes potentiometric titrations of biosorbents, batch equilibrium and kinetic studies of copper biosorption, as well as fixed-bed biosorption experiments.
Jiaping Chen, Sotira Yiacoumi
openaire   +1 more source

The radiation chemistry of metal ions in aqueous solution

Coordination Chemistry Reviews, 1977
A. Introduction . . . . . . . . . . . . . . . . (i) The radiation chemistry of water . . . _ . . . (ii) Radiation chemical methods . . . _ _ . . . . (iii) Reactivity of e& OH and H with metal ions _ . . . (iv) Reactivity of the carboxyl and hydroxymethyl radicals R. Groups I and II (alkali and aikaiine earth metals) . . . . C.
George V. Buxton, Robin M. Sellers
openaire   +1 more source

Sono-electrochemical recovery of metal ions from their aqueous solutions

Journal of Hazardous Materials, 2016
Metal recovery from aqueous waste streams is an important goal for recycling, agriculture and mining industries. The development of more effective methods of recovery have been of increasing interest. The most common methods for metal recovery include precipitation, electrochemical, ion exchange, flocculation/coagulation and filtration.
Bingfeng, Dong, Asher, Fishgold, Paul, Lee, Keith, Runge, Pierre, Deymier, Manish, Keswani   +5 more
openaire   +2 more sources

Evaluation of pectin binding of heavy metal ions in aqueous solutions

Chemosphere, 1999
Evaluation of adsorption performance of several industrially manufactured pectins towards some toxic heavy metals was carried out. Adsorption isotherms for divalent cations in simulant aqueous solutions were measured and corresponding distribution coefficients were calculated. The following selectivity sequences we found for pectins: Pb2+ >> Cu2+ > Co2+
M T, Kartel, L A, Kupchik, B K, Veisov
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Pulse radiolysis of metallic ions in aqueous solutions—I pulse radiolysis in Hg2+ and Hg22+ ions aqueous solutions

International Journal for Radiation Physics and Chemistry, 1972
Abstract The reaction of H atoms (generated by the interaction of fast electrons with water) with Hg2+ and Hg22+ has been investigated. Absorption spectra of the transient species in the range of 250–800 nm have been obtained. Hg+ formed by the reaction: (3) Hg2++H→Hg++H+ has a maximum absorption (λmax) at 272 nm (e272 = 780±20m2 mol−1).
M. Faraggi, A. Amozig
openaire   +1 more source

Evaluation of diffusion coefficients of metallic ions in aqueous solutions

Electroanalysis, 1996
AbstractMany techniques are available for the determination of diffusion coefficients of ions in aqueous solutions. A review of classical and modern techniques is presented. Non‐electrochemical methods are discussed briefly. Electrochemical methods reviewed include chronoamperometry, chronopotentiometry, polarography, and hydrodnamics.
Stephen Kariuki, Howard D. Dewald
openaire   +1 more source