Ion Exchange Resins Articles

  • Amino Acid Fermentaion Broth Clarification

    Amino acids are the basic unit of protein composition, most amino acids are produced by fermentation method. Fermentation broth is an extremely complex system and contains microbial cells, metabolites, unconsumed medium, etc. The traditional method such as centrifuge and plate and frame pressure filtration,  filtrate quality is poor, soluble protein, sugar, peptide, pigment and other ...


    By Jiangsu Jiuwu Hi-tech Co

  • Reducing Costs and Treating Hardness in Drinking Water with Shallow Shell SSTC600E Case Study

    A California state correctional facility was suffering from poor water quality due to nearby wells and agricultural runoff seeping into the ground. The groundwater contaminated the potable water system in the state facility, rendering the water too high in nitrates and ...


    By Purolite Corporation

  • History of Electrodeionization

    Electrodeionization (EDI) history extends back to the mid-1970’s in the USA. Possibly back to Argonne National Labs in the 1950’s as a scientific novelty. However, the first working EDI modules were made by Harry O’Hare in 1977 and 1978, and were tested by the Southern Research Institute (SRI). The concept was “filled-cell ED”, an attempt to use the ED concept to ...


    By SnowPure Water Technologies

  • Purofine PFA694E is a hot topic at the Emerging Contaminants Summit

    The Emerging Contaminants Summit held in Westminster, Colorado is an environmental workshop that comprehensively addresses mitigating emerging contaminants across all environmental systems including surface water, groundwater, drinking water, wastewater, recycled water, soils and sediments. ...


    By Purolite Corporation

  • American Water Works Association NJ meeting takes place in Atlantic City

    As the fourth Nor'easter of March blew into New Jersey, hundreds of professionals in the water industry made their way to Atlantic City for the 83rd Annual Conference of the NJ chapter of the AWWA. Speakers and poster authors were set to discuss topics such as PFAS, new and advanced water technologies, updated regulations, and case studies. But due to the inclimate weather, a couple of sessions ...


    By Purolite Corporation

  • New England Water Works Association Meeting held in Worcester, MA

    Purolite headed to Worcester, Massachusettes for their second American Water Works Association (AWWA) conference in the northeast region this year. The conference brings together educators, regulators, utility workers, and consultants from the water industry to discuss new regulations as well as contaminants threatening municipal drinking water.  ...


    By Purolite Corporation

  • City of Green, Kansas Nitrate Reduction - Case study

    In September 2012, AdEdge Water Technologies, LLC participated and was awarded a Contract managed by BG Consultants for the equipment pre-selection of a nitrate removal treatment system for the City of Green, Kansas. The scope of the contract included the design, manufacture, and startup of the treatment system. The City of Green is a small community of approximately 125 residents located in ...

  • 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

  • Parametric, equilibrium and kinetic studies on the removal of mercury using ion exchange resin

    This experimental research was an investigation into removal of mercury by using a strong acid cation resin, 001 × 7. Parametric experiments were conducted to determine the optimum pH, resin dosage, agitation speed and the effect of change in concentration in the range of 50–200 mg/L. High resin dosages favoured better removal efficiency but resulted in lower uptakes. Equilibrium experiments ...


    By IWA Publishing

  • Mg/Al double-metal hydroxide regeneration of anion exchange resin by electric field intensification

    Fouled anion exchange resins were regenerated by electric field intensification of Mg/Al double-metal hydroxides. Regenerative experiments were performed with varying voltages (10–30 V) and dosages of Mg/Al hydroxides (0.045–0.135 mol and 0.015–0.045 mol, respectively) for 1–5 h. Optimal results were obtained under the following regenerative conditions: 20 V, 4 h, and 0.09/0.03 mol of Mg/Al ...


    By IWA Publishing

  • Electrochemical decomposition of fluorinated wetting agents in plating industry waste water

    Electrochemical decomposition of fluorinated surfactants (PFAS, perfluorinated alkyl substances) used in the plating industry was analyzed and the decomposition process parameters optimized at the laboratory scale and production scale of a 500-liter reactor using lead electrodes. The method and system was successfully demonstrated under production conditions to treat PFAS) with up to 99% ...


    By IWA Publishing

  • Removal of sodium and chloride ions from aqueous solutions using fique fibers (Furcraea spp.)

    Fique fibers obtained from the leaves of Furcraea spp., a highly abundant plant in the mountains of South America, may offer an alternative as biosorbents in desalination processes as they exhibit high removal capacities (13.26 meq/g for chloride ions and 15.52 meq/g for sodium ions) up to four times higher than exchange capacities commonly observed in synthetic resins. The ion removal ...


    By IWA Publishing

  • WWTP Industrial Coating Sector

    The pre-treatment operations prior to coating are the core of the fi nishing process of metal and plastic products: The end quality of any type of coating can precisely depend on a proper pre-treatment. Two types of pre-treatment are carried out in the metal coating processes: Chemical and mechanical. For the second type, dry technologies are used, such as shot blasting, sand blasting and so on, ...


    By SIMPEC S.r.l.

  • M-PGMA as a new water treatment agent to remove oxytetracycline from water

    Magnetic ion exchange resin is a strong base anion exchange resin with magnetic properties that can be used to remove negatively charged materials from water. Magnetic poly glycidyl methacrylate resin (m-PGMA), a new type of resin, has shown better removal performance for humics than MIEX®. Removal of oxytetracycline (OTC) in water by m-PGMA, and factors influencing the removal, were examined, ...


    By IWA Publishing

  • Preparation of quaternary ammonium–Chlorella vulgaris and its adsorption of Ag(CN)2−

    A novel anion exchange resin, quaternary ammonium–Chlorella vulgaris (QACV), was prepared by introducing quaternary ammonium groups onto dried Chlorella vulgaris as base material. Degrees of epoxy, amine and quaternary ammonium groups of QACV were measured. Water retention, optical microscopy, and Fourier transform infrared spectrometry were used to characterize QAVC. The ...


    By IWA Publishing

  • Kinetics analysis of zinc sorption in fixed bed column using a strongly basic anionic exchange resin

    The aim of this study was to examine the capacity of anionic resins to remove zinc as zinc chloride complexes in fixed bed. The applicability of the kinetics models and the characteristics of the bed (sorption capacity, breakthrough curve, depth of the adsorption zone) were taken into account. The influence of the process parameters, such as resin quantity (bed height) and zinc initial ...


    By IWA Publishing

  • Oxidative decomposition properties of cationic exchange resins producing SO42− in power plants

    The sulphate content of a system increases when strong-acid cationic exchange resins leak into a system or when sulphonic acid groups on the resin organic chain detach. To solve this problem, a dynamic cycle method was used in dissolution experiments of several resins under H2O2 or residual chlorine conditions. Results show that after performing dynamic cycle experiments for 120 hours ...


    By IWA Publishing

  • NOM removal: evaluating five process alternatives to alum coagulation

    Bench-scale experiments were conducted to evaluate disinfection by-product (DBP) precursor removal by coagulation with alum and ferric sulfate (FS), intermediate ozonation (IO3), powdered-activated carbon (PAC), ion exchange resin (IX), and spiral-wound nanofiltration (NF). The effect of source water quality on process performance was also assessed on six source waters. Overall, NF offered the ...


    By IWA Publishing

  • Optimization for extracellular polymeric substances extraction of microbial aggregates

    The extracellular polymeric substances (EPS) are important macromolecular components in microbial aggregates. The three EPS extraction methods – ultrasound + cation exchange resins (CER) + sulfide, ultrasound + formamide + NaOH, and ultrasound + heat – were investigated in the study, and the component differences of extracted EPS from the loose ...


    By IWA Publishing

  • Comparison of Continuous Electrodeionization Devices

    Electrodeionization (EDI) is the standard method of generating high purity water bypolishing reverse osmosis permeate. The technology utilizes electrical current toremove ionic impurities while continuously regenerating cation and anion exchange resins. EDI is utilized in ...


    By Agape Water Solutions, Inc.

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