APPLICATION OF ION EXCHANGE TECHNIQUES TO INDUSTRIAL PROCESS OF MUST ACIDIFICATION

2001 ◽  
Vol 30 (1) ◽  
pp. 143-156 ◽  
Author(s):  
V. M. Palacios ◽  
I. Caro ◽  
L. Pérez
Keyword(s):  
Ion Exchange ◽  
Industrial Process

scholarly journals Pre-Reducing Process Kinetics to Recover Metals from Nickel Leach Waste Using Chelating Resins

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Amilton Barbosa Botelho Junior ◽  
David Bruce Dreisinger ◽  
Denise Crocce Romano Espinosa ◽  
Jorge Alberto Soares Tenório
Keyword(s):  
Ion Exchange ◽  
Sodium Sulfite ◽  
Chemical Reduction ◽  
Exchange Process ◽  
Industrial Process ◽  
Chelating Resins ◽  
Ion Exchange Process ◽  
Metals Recovery ◽  
Solution Studies ◽  
Nickel Mining

The main problem of the separation process from nickel mining using the ion exchange technique is the presence of iron, which precipitates in pH above 2.00 and causes coprecipitation of copper and cobalt. Chelating resins have the main advantage of being selected for a specific metal present in solution. Studies have been developed to increase the efficiency of metals recovery using chemical reduction and the ion exchange process to recover metals. The aim of this work was to use sodium sulfite as a reducing agent to convert Fe(III) to Fe(II). Chelating resins Lewatit® TP 207, selective for copper, and Lewatit® TP 220, selective for nickel and cobalt, were studied. Batch experiments were performed to study the effect of pH with and without sodium sulfite. Results indicated that the industrial process has increased efficiency when the reducing process is applied.

scholarly journals 110th Anniversary: Industrial Process Water Treatment and Reuse Enabled by Selective Ion Exchange Materials

2019 ◽  
Vol 58 (32) ◽  
pp. 14873-14879
Author(s):  
Brandon W. Heimer ◽  
Scott M. Paap ◽  
Koroush Sasan ◽  
Patrick V. Brady ◽  
Tina M. Nenoff
Keyword(s):  
Water Treatment ◽  
Ion Exchange ◽  
Industrial Process ◽  
Process Water

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

Ion-exchange separation of titanium from steels and its determination with hydrogen peroxide

1960 ◽  
Vol 23 ◽  
pp. 438-440 ◽  
Author(s):  
V ATHAVALE ◽  
M NAPKARNI ◽  
C VENKATESWARLU
Keyword(s):  
Hydrogen Peroxide ◽  
Ion Exchange ◽  
Ion Exchange Separation

Studies on ion-exchange membranes.Part 1. Effect of humidity on the conductivity of Nafion®

1996 ◽  
Vol 414 (2) ◽  
pp. 115-120 ◽  
Author(s):  
A.V. Anantaraman ◽  
C.L. Gardner
Keyword(s):  
Ion Exchange

SYNTHESIS AND MAGNETIC PROPERTIES OF PLATELET SHAPE SPINEL AND M-TYPE HEXAGONAL FERRITES PREPARED FROM β'' ALUMINA-LIKE FERRITES BY ION EXCHANGE

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-937-C8-938
Author(s):  
O. Kalogirou ◽  
A. C. Stergiou ◽  
D. Samaras ◽  
S. Nicolopoulos ◽  
A. Bekka ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ion Exchange ◽  
Hexagonal Ferrites ◽  
Platelet Shape

One-step preparative isolation of aristolochic acids by strong ion-exchange centrifugal partition chromatography

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
AA Abdelgadir ◽  
L Boudesocque-Delaye ◽  
I Thery-Koné ◽  
A Gueiffier ◽  
EM Ahmed ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Partition Chromatography ◽  
Centrifugal Partition Chromatography ◽  
Preparative Isolation ◽  
Aristolochic Acids ◽  
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