New Sorbents for Metal Salts based on Cation Exchange Extractants and Anion Exchange Resins: Their Preparation and Properties

2012 ◽  
Vol 30 (6) ◽  
pp. 553-565 ◽  
Author(s):  
V. I. Kuzmin ◽  
A. I. Kholkin ◽  
V. N. Kuzmina
Keyword(s):  
Cation Exchange ◽  
Anion Exchange ◽  
Metal Salts ◽  
Anion Exchange Resins ◽  
Exchange Resins

Design and Research of Spent Resin Conical Dryer Device

2017 ◽  
Author(s):  
Yan Zhou ◽  
Haifeng Zhang
Keyword(s):  
Thermal Decomposition ◽  
Cation Exchange ◽  
Water Content ◽  
Anion Exchange ◽  
Vacuum Drying ◽  
Drying Process ◽  
Anion Exchange Resins ◽  
Cation Exchange Resins ◽  
Exchange Resins ◽  
Spent Resin

This paper introduced the design and research of spent resin conical dryer which was based on the analysis of the thermal decomposition characteristics of resins. The drying experiment of non-radioactive cation exchange resins and anion exchange resins was also carried out in this study. The result showed that the water content of resins reduced from about 55%(wt) to 8.5%(wt) and the volume reduction ration reached 2.17 with a drying end temperature of 90°C, which preliminarily verified the feasibility of the vacuum drying process and conical dryer device for treating radioactive spent resins.

scholarly journals Use of ion exchange resins for tartrate wine stabilization

OENO One ◽  
2006 ◽  
Vol 40 (4) ◽  
pp. 223 ◽  
Author(s):  
Helena Mira ◽  
Patricia Leite ◽  
Jorge Manuel Ricardo-da-Silva ◽  
António Sérgio Curvelo-Garcia
Keyword(s):  
Ion Exchange ◽  
Organic Acid ◽  
Cation Exchange ◽  
Anion Exchange ◽  
Acid Composition ◽  
Previous Treatment ◽  
Ion Exchange Resins ◽  
Anion Exchange Resins ◽  
Exchange Resins

<p style="text-align: justify;">The application of the cation exchange and double cation-anion exchange resins, regarding the wine tartrate stabilization, without previous treatment of wine by cold has been studied as well as their influence in phenolic, mineral and organic acid composition. The R1 resin was used in Mg2+, Na+ and H+ form, the R2 resin was always used in H+ form, and the R3 was used in OH- form. The eluted wine was assembled with untreated wine to obtain stable wine. The R2 resin showed to be more efficient to enhance the tartrate stabilization than R1 in Mg2+ form; however in H+ form, the behaviour of both resins was quite similar. The tartrate stabilization results to double cation anion exchange were similar to the results obtained with cation exchange.</p>

Removal of Hydrophobic and Hydrophilic Constituents by Anion Exchange Resin

1999 ◽  
Vol 40 (9) ◽  
pp. 207-214 ◽  
Author(s):  
J.-P. Croué ◽  
D. Violleau ◽  
C. Bodaire ◽  
B. Legube
Keyword(s):  
Molecular Weight ◽  
Anion Exchange ◽  
Water Source ◽  
Atomic Ratio ◽  
Size Exclusion ◽  
Salting Out ◽  
Anion Exchange Resins ◽  
Hydrophilic Character ◽  
Exchange Resins

The objective of this work was to compare the affinity of well characterized NOM fractions isolated from two surface waters with strong (gel matrix and macroporous matrix) and weak anion exchange resins (AER) using batch experiment conditions. The structural characterization of the fraction of NOM has shown that the higher the hydrophilic character, the lower the C/O atomic ratio, the lower the SUVA, the lower the aromatic carbon content and the lower the molecular weight. In general (not always), strong AER was more efficient to remove DOC than weak AER. For the same water source (Suwannee River), the higher the molecular weight of the NOM fraction, the lower the affinity with AER. Increasing the ionic strength favored the removal of the hydrophobic NOM fraction (“salting out” effect) while increasing the pH apparently reduced the removal of the hydrophilic NOM fraction. Results were discussed in terms of size exclusion, adsorption, anion exchange and also hydrophobic/hydrophilic repulsion.

scholarly journals Impact of anion exchange adsorbents on regional citrate anticoagulation

2020 ◽  
pp. 039139882094773
Author(s):  
Karin Strobl ◽  
Stephan Harm ◽  
Ute Fichtinger ◽  
Claudia Schildböck ◽  
Jens Hartmann
Keyword(s):  
Anion Exchange ◽  
Regional Citrate Anticoagulation ◽  
Liver Support ◽  
Anion Exchange Resins ◽  
Increased Risk ◽  
Extracorporeal Liver Support ◽  
Target Molecules ◽  
Exchange Resins ◽  
The Impact

Introduction: Heparin and citrate are commonly used anticoagulants in membrane/adsorption based extracorporeal liver support systems. However, anion exchange resins employed for the removal of negatively charged target molecules including bilirubin may also deplete these anticoagulants due to their negative charge. The aim of this study was to evaluate the adsorption of citrate by anion exchange resins and the impact on extracorporeal Ca2+ concentrations. Methods: Liver support treatments were simulated in vitro. Citrate and Ca2+ concentrations were measured pre and post albumin filter as well as pre and post adsorbents. In addition, batch experiments were performed to quantify citrate adsorption. Results: Pre albumin filter target Ca2+ concentrations were reached well with only minor deviations. Citrate was adsorbed by anion exchange resins, resulting in a higher Ca2+ concentration downstream of the adsorbent cartridges during the first hour of treatment. Conclusions: The anion exchange resin depletes citrate, leading to an increased Ca2+ concentration in the extracorporeal circuit, which may cause an increased risk of clotting during the first hour of treatment. An increase of citrate infusion during the first hour of treatment should therefore be considered to compensate for the adsorption of citrate.

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