Ion Exchange Articles

  • An assessment of nutrient dynamics in streambank soils of the Lower Little Bow River in southern Alberta using ion exchange membranes

    Nutrient dynamics in streambanks may impact nutrient movement to water, and may be influenced by cattle activity, river water level fluctuations, and time. Our objective was to determine the influence of these factors on nutrient (NO3-N, P, S, Fe, Mn, Cu, Zn, Ca, Mg) dynamics in streambanks along the Lower Little Bow River in southern Alberta using Plant Root Simulator or PRS® probes. ...


    By IWA Publishing

  • Common Ion Exchange System Problems and How to Fix Them

    Ion exchange (IX) systems can be an efficient solution for various demineralization, purification, and wastewater treatment needs. In fact, IX systems deliver several advantages over chemical treatment, as they generally require less space, ...


    By SAMCO Technologies, Inc.

  • What is an Ion Exchange System and How Does it Work?

    Ion exchange (IX) systems are used across a variety of industries for water softening, purification, and separation purposes. While the chemistry of individual ion exchange reactions vary from one application to the next, IX is a treatment process where dissolved ions are replaced by other, more desirable, ions of a similar electrical charge. If you’re wondering whether IX is right for your ...


    By SAMCO Technologies, Inc.

  • Why choose Sialex over traditional salt based Ion Exchanger

    We are regularly asked to compare our product with that of competitors. The market place for "Scale and Corrosion" control devices is large and there ae many different offerings. Customers select products based upon many parameters. Some parameters are emotional others purely objective. Most products for sale have positives to offer. Sometimes the message presented to the potential ...


    By Phoenix Ring Manufaktur UG

  • The binding of metal ions to molecularly-imprinted polymers

    Imprinting polymerization is a flexible method to make resins specific for different compounds. Imprinting polymerization involves the polymerization of the resin in the presence of a template, here cadmium ions or arsenate. The template is then removed by washing, leaving specific binding sites in the resin. In water treatment, the removal of toxic metal ions is difficult due to the limited ...


    By IWA Publishing

  • Another MRO company goes wastewater-free!

    Jet Aviation in Basel, Switzerland, is using a VACUDEST vacuum distillation system to efficiently and sustainably treat wastewater left over from refurbishing aircraft parts. This state-of-the-art system replaced outdated chemical/physical treatment at the company. Jet Aviation is particularly pleased with the high quality of the treated water, which can even be reused in maintenance processes. ...


    By H2O GmbH

  • Efficient removal of Indigo Carmine dye by a separation process

    This study is aimed at developing an innovative approach for Indigo Carmine dye removal from synthetic solutions by electrodialysis, carried out using ion exchange membranes. The batch electrodialysis system was operated at various current intensities: 0.05, 0.1 and 0.15 A. The pH and conductivity of solutions were measured before and after using electrodialysis process. The colour removal ...


    By IWA Publishing

  • Effect of competing amines on the removal of tetramethylammonium hydroxide from solution using ion exchange

    Tetramethylammonium hydroxide (TMAH, TMA+) has been widely used as the photoresist developer in semiconductor and thin film transistor liquid crystal display manufacturing. In this study, TMAH-containing wastewater was treated by ion exchange method. Strong acid cation exchange resin was used. A kinetics study revealed that the ion exchange reaction reached equilibrium within 20 min and it ...


    By IWA Publishing

  • Electrodialysis heterogeneous ion exchange membranes modified by SiO2 nanoparticles: fabrication and electrochemical characterization

    In the current study mixed matrix heterogeneous cation exchange membranes were prepared by solution casting technique. The effect of SiO2 nanoparticles in the polymeric solution on the physicochemical properties of prepared membranes was studied. Scanning optical microscope images showed uniform particle distribution and relatively uniform surfaces for the prepared membranes. The membrane ...


    By IWA Publishing

  • Chemical fractionation and speciation modelling for optimization of ion-exchange processes to recover palladium from industrial wastewater

    Palladium is used in several industrial applications and, given its high intrinsic value, intense efforts are made to recover the element. In this hydrometallurgic perspective, ion-exchange (IEX) technologies are principal means. Yet, without incorporating the chemical and physical properties of the Pd present in real, plant-specific conditions, the recovery cannot reach its technical nor ...


    By IWA Publishing

  • Local-scale recovery of wastewater nitrogen for edible plant growth

    An anaerobic/ion exchange (AN-IX) system was developed for recovery and reuse of wastewater nitrogen at point-of-origin. AN-IX combines upflow solids blanket anaerobic treatment with ammonium ion adsorption onto granular natural zeolite. AN-IX operates passively and without energy input. A 57 L empty-bed prototype was operated for 355 days on wastewater primary effluent. Total nitrogen removal ...


    By IWA Publishing

  • Effect of ionic strength on the ion exchange equilibrium between AMX membrane and electrolyte solutions

    The effect of ionic strength variation on the ion exchange equilibrium between AMX anion exchange membrane and electrolyte solutions containing the most dominant anions on natural waters (Cl−, NO3−, and SO42−) was studied. All experiments were carried out at a constant temperature of 25 °C. Ion exchange isotherms were established, at different ionic ...


    By IWA Publishing

  • Electrolytic denitrification with an ion-exchange membrane in groundwater

    Nitrate contamination of groundwater is an important issue in rural areas. In this study, an electrolytic method for the denitrification of groundwater was investigated in a laboratory reactor. We used an ion-exchange membrane, employing a titanium oxide anode and five kinds of cathode for the investigation. The nitrate removal efficiencies with Cu, Pb, Ti/Ir/Ru, Ti/Ir/Ta, and Zn cathodes were ...


    By IWA Publishing

  • Temperature effect on ion exchange equilibrium between CMX membrane and electrolytes solutions

    Ion exchange equilibrium for three systems involving monovalent and divalent ions has been investigated over various temperatures (283, 298 and 313 K) using CMX cationic exchange membrane. All experiments were carried out at 0.1 mol/L. Ion exchange isotherms for the binary systems (Na+/K+), (Na+/Ca2+) and (K+/Ca2+) were established at ...


    By IWA Publishing

  • Arsenic removal from groundwater by ion exchange and adsorption processes: comparison of two different materials

    Among the different technologies for reducing arsenic concentration in drinking water, adsorption has demonstrated in many cases to be superior in terms of performance and costs. However, there are numerous types of commercial adsorbents potentially capable of treating arsenic-contaminated groundwater. The present paper compares arsenic uptake efficiency of two different commercial media, one ...


    By IWA Publishing

  • Wyman Gordon Case Study

    Wyman-Gordon is a world class materials company with nearly 200 years of metals engineering experience. They are the acknowledged leader in the production of high-quality closed-die forgings and extrusions for the most critical applications. Markets served include those for commercial and military aircraft; gas turbine engines; oil and gas exploration; land based gas turbine and power generation; ...


    By Mech-Chem Associates, Inc.

  • Reuse to the Rescue: Learn How Advanced Technology Can Help Combat Water Scarcity

    Global water scarcity and increasing population makes wastewater treatment and recycling a strategic imperative for human and economic development. Large volumes of wastewater are generated daily in every community and at water-intensive industrial facilities. As the demand for water grows, so does demand for the treatment and reuse of this water. Thanks to Dow innovation, people worldwide are ...

  • Case study: Printed Circuit Board Manufacturing

    Aspocomp Ltd. is a Finnish leader in the manufacture of printed circuit boards (PCB), thick film hybrid circuits and mechanical assemblies for the electronics industry. Its main customers are European manufacturers of electronics equipment. Rather than producing and marketing its own products, Aspocomp relies on its customers who design the product and provide the specifications and drawings, ...


    By Watman Ltd.

  • Combined bio-regeneration and ion-exchange system for perchlorate removal

    In order to prove that perchlorate-laden resins could be bio-regenerated through direct contact with perchlorate-reducing bacteria (PRB), a combined bio-regeneration and ion-exchange (IX) system was operated. Two kinds of perchlorate-laden resins, nitrate-selective A520E and perchlorate-selective A530E, were successfully regenerated by PRB cultivated under anaerobic conditions. The ...


    By IWA Publishing

  • Separation of some heavy metal species from electroplating rinsing solutions by ion exchange resin

    A strongly basic anion exchange lewatit MP 600 resin was tested to separate metal species from electroplating rinsing wastewater. An azo resorcinol 4–(2–pyridylazo) dyestuff was used as a complexing agent. Adsorption isotherms were modelled in an ethanol/acetic acid/water media. The loaded resin is regenerated using 4 M HCl whereby the eluted metal species are recovered. Results revealed that ...


    By Inderscience Publishers

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