Ion exchange separation principle investing
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Journal of Colloid Interface Science ; In addition, the ion exchange is regularly able to provide more effective and direct purification compared to purification by precipitation, or solvent extraction. A typical resin is a water insoluble polymer cross-linked matrix with a functional group. The exchanging ions from the treated solution are bonded chemically absorbed to the resin's functional group sites which may vary in types.
The bonding can be of an ionic, or a covalent ligand type, in the case of chelating resins. For some applications mineral type adsorbents such as zeolites are used to physically adsorb ions in a molecular sieve ion-sieve mechanism. TAMI has vast practical experience and expertise in the ion exchange field.
We have the ability to study and develop separation processes, both in batch and continuous operation. We have experience in finding the appropriate ion exchanger resin , identification of selectivity indexes, determination of resin capacity and prediction of expected results in static or continuous processes.
We have the possibility to scale up the ion exchange process from an idea, through small laboratory columns and up to a pilot system and provide the whole package required for the design of a full-scale plant. We have proven methodology for testing, simulating and scaling up batch and continuous CIX processes using static columns or continues pilot system IXSEP in which all the essential design parameters efficiency, productivity, concentrations, etc. Choosing the most suitable resins for a specific process: using our company's access to the most comprehensive and extensive databases of chemical literature and our vast experience.
Testing the feasibility of the process in the lab: - Performing beaker tests to compare between selected resins. Scaling-up the process to a pilot scale: - In case of a batch process — testing in a column of up to 6'' and 35 liters. Delivering all the technical data required for a design for a full-scale plant: - Productivity, efficiency, and capacity.
Ion exchange is a powerful technology which was found to have multiple applications over the years and is successfully used in many fields: to name a few: Water treatment - softening, demineralization, groundwater remediation and potable water production, brine purification, wastewater treatment, etc. Food industry — softening and demineralization of sugar juices and whey, removal of color from syrups, treatment of glucose, citric acid purification, etc.
Chemical and pharmaceutical industries - hydrogen peroxide purification, chlorine production, extraction of antibiotics, taste-masking, purification of organic acids, etc. Electronics - electronic waste treatment, purification of etching solutions, etc.
In many cases, ion exchange replaces other separation and purification technologies due to its many advantages. While processes like solvent extraction involve significant capital and operating costs, occupy a large footprint area and require significant quantities of water and flammable extractants which can cause serious environmental and safety problems, the ion exchange process offers a lower environmental burden and economic constraint and higher selectivity and separation capabilities for target products.
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