Method of calculation for the continuous mass exchange process between an antibiotic solution and ion-exchange resin

1978 ◽  
Vol 12 (1) ◽  
pp. 119-123 ◽  
Author(s):  
L. M. Klyueva ◽  
N. I. Gel'perin ◽  
Z. V. Ermakova ◽  
V. G. Ainshtein
Keyword(s):  
Ion Exchange ◽  
Mass Exchange ◽  
Exchange Resin ◽  
Exchange Process ◽  
Ion Exchange Resin ◽  
Mass Exchange Process ◽  
Method Of Calculation ◽  
Antibiotic Solution ◽  
Continuous Mass

scholarly journals Removal of lead, cadmium and copper ions from aqueous solutions by using ion exchange resin C 160

2016 ◽  
Vol 32 (4) ◽  
pp. 129-140 ◽  
Author(s):  
Agnieszka Bożęcka ◽  
Monika Orlof-Naturalna ◽  
Stanisława Sanak-Rydlewska
Keyword(s):  
Ion Exchange ◽  
Aqueous Solutions ◽  
Sorption Capacity ◽  
Exchange Resin ◽  
Copper Ions ◽  
Exchange Process ◽  
Cation Exchange Resin ◽  
Ion Exchange Resin ◽  
Adsorption Model ◽  
Ion Exchange Process

Abstract Industrial waste solutions may contain toxic Pb, Cu, Cd and other metal ions. These ions may also be components of leachates in landfills of ores. The toxicity of the ionic forms of these metals is high. For this reason the paper presents the results of studies on one of the methods to reduce their concentration in aqueous solutions. The article presents the results of studies on the removal of Pb2+, Cd2+ and Cu2+ ions from model aqueous solutions with synthetic ion exchange resin C 160 produced by Purolite. The investigated ion exchanger contains sulfonic acid groups (-SO3H) in its structure and is a strongly acidic cation-exchange resin. The range of the studied initial concentrations of the Pb2+, Cd2+ and Cu2+ ions in the solutions was from 6.25 mg/L to 109.39 mg/L. The results confirmed that the used ion exchange resin C160 efficiently removes the above-mentioned ions from the studied solutions. The highest degree of purification was achieved in lead solutions for the assumed range of concentrations and conditions of the ion exchange process. It reached 99.9%. In the case of other solutions, the ion exchange process occurs with lower efficiency, however it remains high and amounts to over 90% for all the ions. The results of research were interpreted on the basis of the Langmuir adsorption model. For each studied ion, sorption capacity of the ion exchange resin increases until the saturation and equilibrium state is reached. Based on the interpretation of the Langmuir equation coefficients, an indication can be made that the studied ion exchange resin has a major sorption capacity towards the copper ions. In their case, the highest value of constant qmax was obtained in the Langmuir isotherm. For Cu2+ ions it was 468.42 mg/g. For Pb2+ and Cd2+ ions, this parameter reached the values of 112.17 mg/g and 31.76 mg/g, respectively. Ion exchange resin C 160 shows the highest affinity for the Pb2+ ions. In this case, the achieved value of coefficient b is highest and equals 1.437 L/mg.

Method for the Recovery of Indium from Diluted Bioleaching Solutions

2017 ◽  
Vol 262 ◽  
pp. 265-268 ◽  
Author(s):  
Radek Vostal ◽  
Ute Šingliar ◽  
Martin Bertau
Keyword(s):  
Solvent Extraction ◽  
Ion Exchange ◽  
Indium Oxide ◽  
Exchange Resin ◽  
Exchange Process ◽  
Extraction Procedure ◽  
Ion Exchange Resin ◽  
Ion Exchange Process ◽  
Impregnated Resin ◽  
Iron And Zinc

Using a commercially available solvent impregnated resin, Lewatit TP272, in an ion exchange process, it was possible to extract up to 90 % indium from a feed containing as little as 1 mg/L indium in the presence of high amounts of impurities, i.e. 1000 mg/L iron and zinc each. It was demonstrated that through gradient regeneration of obtained loaded ion-exchange resin, it is possible to yield a solution containing as much as 400 mg/L indium along with 400 mg/L iron, thereby upgrading its purity more than 600 times. Moreover, it was shown that this solution can be fed into an existing solvent extraction procedure which would yield an indium oxide with more than 99 % purity.

Effect of Metallization on the Electromechanical Properties of Microfluidically Synthesized Hydrogel Beads

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Kaushik Kudtarkar ◽  
Patricia Iglesias ◽  
Thomas W. Smith ◽  
Michael J. Schertzer
Keyword(s):  
Electrical Properties ◽  
Ion Exchange ◽  
Exchange Resin ◽  
Exchange Process ◽  
Ion Exchange Resin ◽  
Electromechanical Properties ◽  
Hydrogel Beads ◽  
Ion Exchange Process ◽  
Resin Beads ◽  
Dielectric Coefficient

This investigation demonstrates that metallization can be used to tailor the electromechanical properties of polymer beads. Rigid ion exchange resin beads and softer microfluidically synthesized polyionic liquid hydrogel beads were metallized using an ion exchange process. Metallization increased bead stiffness and dielectric coefficient while reducing resistivity in all beads examined here. Gold-filled beads were preferable over platinum-filled beads as they generated greater changes in electrical properties with smaller increased stiffness. These properties could be further altered by performing multiple metallization steps, but diminishing returns were observed with each step. Ion exchange resin beads were always stable after multiple metallization steps, but polyionic beads would often rupture when repeatedly compressed. Polyionic beads with higher ionic liquid (IL) content were more fragile, and beads synthesized from monomer solutions containing 1% IL were mechanically robust after three metallization steps. These 1% IL beads delivered similar electrical properties as the IONAC beads that also underwent three metallization steps at a significantly reduced stiffness.

Effect of Cycles and Ion-Exchange on the Purification of Lithium Carbonate

2012 ◽  
Vol 443-444 ◽  
pp. 594-600
Author(s):  
Jian Wu ◽  
Yao Chun Yao ◽  
Yong Nian Dai ◽  
Bin Yang
Keyword(s):  
Ion Exchange ◽  
High Purity ◽  
Mother Liquor ◽  
Exchange Resin ◽  
Exchange Process ◽  
Lithium Carbonate ◽  
Ion Exchange Resin ◽  
Exchange Method ◽  
Ion Exchange Process ◽  
Industrial Grade

In this study, high-purity Li2CO3 was prepared by carbonation-decomposition and ion-exchange methods using the industrial-grade lithium carbonate, and the effect of cycles and ion-exchange of the mother liquor on purification was investigated. Results showed that the process of cycles can improve the purity and productivity of Li2CO3. The impurities (such as K, Na, Ca and Mg) could be removed in the process. The purity of product decreased and the impurity contents increased after 4 cycles. At the same time, the ion-exchange process by D412 resin was used to deeply remove the residual Ca and Mg after the simple carbonation-decomposition and cycle process. The comparison of different flowing speed of solution through the ion-exchange resin indicated that the low flowing speed was beneficial for the deep removal of the Ca and Mg. considering the problem of efficiency, the flowing speed of 10-20 ml/min was appropriate. The high purity and productivity of Li2CO3 indicated that the carbonation-decomposition method combining with the mother liquor cycles and ion-exchange method has a good perspective in the field of lithium carbonate purification.

scholarly journals Copper recovery from chalcopyrite flotation plant tailings acid leach using ion exchange resin dowtm XUS 43578.00

2018 ◽  
Vol 7 (2.23) ◽  
pp. 317
Author(s):  
Melvin M. Mashingaidze ◽  
Catherine N. Shifotoka
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Exchange Process ◽  
Ammonium Hydroxide ◽  
Ion Exchange Resin ◽  
Leach Solution ◽  
Ammonium Hydroxide Solution ◽  
Hydroxide Solution ◽  
Ion Exchange Process ◽  
Acid Leach

This study examined the feasibility of recovering copper from a sulphuric acid leach solution of chalcopyrite flotation plant tailings assaying 0.18 % copper and 0.19 % zinc using DOWTM XUS 43578.00 ion exchange resin. Zn2+cations are counter ionsto Cu2+cations during the ion exchange process. Adsorption and desorption tests were conducted on the resin with a leach solution containing26 mg Cu/L and 225 mg Zn/L,under various conditions of pH, DOWTM XUS 43578.00resin dosage, agitation time and eluant(ammonium hydroxide solution) concentration. The DOWTM XUS 43578.00resindemonstrated a high selectivity for copper over zinc, with a separation factor of 30.26 mg/g. The highcopper distribution coefficient of65L2/g2suggeststhe resin can effectively concentrate copper in leach solutions of these particular tailings.A 4M ammonium hydroxide solution yielded the highest copper recoveryat pH 3and0.6gresin dosageafter3hours of agitation. These results can be improved by a pre-treatment step to remove the zinc before the copper ion exchange process, and modifying the experiments to simulate industrial practice by having multi-stage sorption and desorption phases. 

An ion exchange process with thermal regeneration IX. A new type of rapidly reacting ion-exchange resin

Desalination ◽  
1973 ◽  
Vol 13 (3) ◽  
pp. 269-285 ◽  
Author(s):  
B.A. Bolto ◽  
K. Eppinger ◽  
A.S. Macpherson ◽  
R. Siudak ◽  
D.E. Weiss ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Exchange Process ◽  
Ion Exchange Resin ◽  
Thermal Regeneration ◽  
Ion Exchange Process ◽  
New Type

OPTIMIZATION OF DNA EXTRACTION METHODS FROM BIOLOGICAL MATERIALS OF HONEY BEES IN A DIFFERENT METAMOTPHOSIS PHASE

2016 ◽  
Vol 52 ◽  
pp. 171-176
Author(s):  
M. Palkina ◽  
O. Metlitska
Keyword(s):  
Ion Exchange ◽  
Dna Extraction ◽  
Honey Bees ◽  
Biological Material ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Extraction Methods ◽  
Chelex 100 ◽  
Drone Brood ◽  
Dna Extraction Methods

The aim of the research – adaptation, optimization and using of existing DNA extraction methods from bees’ biological material with the reagent «Chelex-100" under complex economic conditions of native laboratories, which will optimize labour costs and improve the economic performance of DNA extraction protocol. Materials and methods. In order to conduct the research the samples of honey bees’ biological material: queen pupae exuviae, larvae of drone brood, some adult bees’ bodies (head and thorax) were selected. Bowl and drone brood were obtained from the experimental bee hives of Institute of Apiculture nd. a. P. I. Prokopovich of NAAS. DNA extraction from biosamples of Apis mellifera ssp. was carried out using «Chelex-100®» ion exchange resin in different concentrations and combinations. Before setting tests for determination of quantitative and quality indexes, dilution of DNA samples of the probed object was conducted in ratio 1:40. The degree of contamination with protein and polysaccharide fractions (OD 260/230), quantitative content of DNA (OD 260/280) in the extracted tests were conducted using spectrophotometer of «Biospec – nano» at the terms of sample volume in 2 µl and length of optical way in 0,7 mm [7]. Verification of DNA samples from biological material of bees, isolated by «Chelex-100®», was conducted after cold keeping during 24 hours at 20°C using PСR with primaries to the fragment of gene of quantitative trait locus (QTL) Sting-2 of next structure [8]:  3' – CTC GAC GAG ACG ACC AAC TTG – 5’; 3' – AAC CAG AGT ATC GCG AGT GTT AC – 5’ Program of amplification: 94 °C – 5 minutes – 1 cycle; 94 °C – 1 minute, 57°C – 1 minute, 72 °C – 2 minutes – 30 cycles; elongation after 72°C during 2 minutes – 1 cycle. The division of obtained amplicons was conducted by gel electrophoresis at a low current – 7 µÀ, in 1,5 % agarose gel (Sigma ®) in TAE buffer [7]. The results. At the time of optimization of DNA isolation methods, according to existing methods of foreign experts, it was found optimal volume of ion exchange resin solution was in the proposed concentration: instead of 60 µl of solution used 120 µl of «Chelex-100®», time of incubation was also amended from 30 minutes to 180 minutes [9]. The use of the author's combination of method «Chelex-100®» with lysis enzymes, proteinase K and detergents (1M dithiothreitol), as time of incubation was also amended, which was reduced to 180 minutes instead of the proposed 12 hours [10]. Changes in quality characteristics of obtained DNA in samples after reduction in incubation time were not found. Conclusions. The most economical method of DNA isolation from bees’ biological material is 20% solution of «Chelex-100» ion exchange resin with the duration of the incubation period of 180 minutes. It should also be noted that the best results can be obtained from exuviae, selected immediately after the queen’s exit from bowl, that reduces the likelihood of DNA molecules destruction under the influence of nucleases activation, but not later than 12 hours from release using the technology of isolated obtain of queens.

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