Heavy toxic metal ion exchange kinetics: Validation of ion exchange process on composite cation exchanger nylon 6,6 Zr(IV) phosphate

2013 ◽  
Vol 19 (3) ◽  
pp. 956-960 ◽  
Author(s):  
Zeid A. AlOthman ◽  
Mohammad Mezbaul Alam ◽  
Mu. Naushad
Keyword(s):  
Ion Exchange ◽  
Metal Ion ◽  
Cation Exchanger ◽  
Exchange Process ◽  
Toxic Metal ◽  
Ion Exchange Process ◽  
Nylon 6,6 ◽  
Ion Exchange Kinetics ◽  
Exchange Kinetics ◽  
Metal Ion Exchange

Determination of the ion exchange process of K2Ti4O9 fibers at constant pH and modeling with statistical rate theory

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73474-73480 ◽  
Author(s):  
Chang Liu ◽  
Nanhua Wu ◽  
Jun Wang ◽  
Liangliang Huang ◽  
Xiaohua Lu
Keyword(s):  
Ion Exchange ◽  
Exchange Process ◽  
Rate Theory ◽  
Ion Exchange Process ◽  
Statistical Rate Theory ◽  
Constant Ph ◽  
Ion Exchange Kinetics ◽  
Exchange Kinetics ◽  
Kinetics Of

The ion exchange kinetics of K2Ti4O9 fibers at constant pH was determined precisely by ion-selective electrodes, and activity coefficients of ions in solutions were calculated by the Lu–Maurer equation.

Metal Exchange within a Body-Centred Cubic Hydrogen-Bonded Network

2007 ◽  
Vol 60 (1) ◽  
pp. 68 ◽  
Author(s):  
Brendan F. Abrahams ◽  
Nicholas J. FitzGerald ◽  
Timothy A. Hudson ◽  
Richard Robson ◽  
Richard D. Shalders
Keyword(s):  
Aqueous Solution ◽  
Ir Spectroscopy ◽  
Ion Exchange ◽  
Single Crystal ◽  
Metal Ion ◽  
Exchange Process ◽  
Metal Exchange ◽  
Synthetic Approach ◽  
Metal Ion Exchange ◽  
Hydrogen Bonded

A hydrogen bonded network of composition Zn8(C4O7)4(H2O)12·hydrate was shown to undergo a single crystal to single crystal exchange process when crystals are immersed in a concentrated aqueous solution of Ni(ii). In the exchange process, half of the zinc(ii) centres are replaced by nickel(ii) centres. The process of metal ion exchange was monitored using IR spectroscopy. Crystal structures of the transformed crystal and the product generated from a direct synthetic approach are presented.

Design of a fixed-bed ion-exchange process for the treatment of rinse waters generated in the galvanization process using Laminaria hyperborea as natural cation exchanger

2016 ◽  
Vol 90 ◽  
pp. 354-368 ◽  
Author(s):  
Luciana P. Mazur ◽  
Tatiana A. Pozdniakova ◽  
Diego A. Mayer ◽  
Rui A.R. Boaventura ◽  
Vítor J.P. Vilar
Keyword(s):  
Ion Exchange ◽  
Cation Exchanger ◽  
Exchange Process ◽  
Fixed Bed ◽  
Laminaria Hyperborea ◽  
Ion Exchange Process

scholarly journals Competitive Heavy Metal Removal from Binary Solution

2020 ◽  
Vol 69 (9-10) ◽  
pp. 465-471
Author(s):  
Anita Bašić ◽  
Mario Nikola Mužek ◽  
Lea Kukoč-Modun ◽  
Sandra Svilović
Keyword(s):  
Heavy Metal ◽  
Ion Exchange ◽  
Metal Removal ◽  
Binary Solution ◽  
Exchange Process ◽  
Heavy Metal Removal ◽  
Cobalt Ions ◽  
Rushton Turbine ◽  
Ion Exchange Process ◽  
Ion Exchange Kinetics

The removal of copper and cobalt ions from binary metal solutions on zeolite NaX by ion exchange process was investigated. Experiments were conducted in unbaffled glass reactor with a Rushton turbine as a stirrer. The dependence of ion exchange kinetics and the amount exchanged were tested using different initial concentrations of metal ions in mixtures. The results obtained indicate that the removal efficiency depends on the initial heavy metal concentrations in binary solutions. Experimental kinetics data were analysed using Ritchie and Weber-Morris models. According to AARD values, the rate in this study was reaction-controlled.

scholarly journals Sorption of pertechnetate anion by cation modified bentonites

2019 ◽  
Vol 322 (3) ◽  
pp. 1771-1776
Author(s):  
D. Buzetzky ◽  
E. M. Kovács ◽  
M. N. Nagy ◽  
J. Kónya
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Metal Ion ◽  
Exchange Process ◽  
Exchange Capacity ◽  
Ion Exchange Process

Abstract Pertechnetate anion sorption was investigated on modified bentonites. Mn-, Cr-, Sn-bentonites were prepared by ion exchange process to sorb radioactive pertechnetate ions. In the case of Mn-, Cr-bentonite the sorb amount of metal ion was 70–90% of the cation exchange capacity of the bentonite which is expected. Interestingly in the case of Sn-bentonite this amount was 1.42 times higher than the cation exchange capacity. On Mn-bentonite the sorption was 35% at pH 5. The removal of pertechnetate ions was 100% on Cr-, Sn-bentonites and the significant sorption was achieved below 650 mV/SHE.

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