electrodialysis Articles

  • Desalination of oil sands process-affected water and basal depressurization water in Fort McMurray, Alberta, Canada: application of electrodialysis

    The high content of inorganic species in water used to extract bitumen from the Alberta oil sands and in the groundwater below the oil sands is an increasing environmental concern. These water matrices require treatment before they can be reused or safely discharged. Desalination of the oil sands process-affected water (OSPW) and groundwater, or basal depressurization water (BDW), can be ...


    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

  • An electrostatic shielding-based coupled electrodialysis/electrodeionization process for removal of cobalt ions from aqueous solutions

    Electrode graphite powder beds were interposed between anode and cathode as intermediate electrodes inside an electrolytic setup. Due to electrostatic shielding they eliminate the applied electric field and therefore stop the electromigration of ions within their mass. It was found that the intermediate electrodes can act as ionic current sinks—ion concentrating compartments and therefore cause a ...


    By IWA Publishing

  • Integrating Reverse-Electrodialysis Stacks with flow batteries for improved energy recovery from salinity gradients and energy storage

    Abstract Salinity gradient energy can be directly converted into electrical power by using reverse electrodialysis (RED) and other technologies, but reported power densities have been too low for practical applications. Herein, the RED stack performance was improved by using 2,6-dihydroxyanthraquinone and ferrocyanide as redox couples. These electrolytes were then used in a flow battery to ...


    By SusChem

  • 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

  • Seawater desalination technologies

    The distribution of the total water available in various places on the earth is delineated in this paper. This paper discusses various desalination technologies like membrane technology and thermal technology. Membrane technology includes Reverse Osmosis and Nanofiltration, Electrodialysis and Electrodialysis Reversal, whereas thermal technology includes Multi-Stage Flash (MSF) Distillation, ...


    By Inderscience Publishers

  • Brackish water desalination technologies

    This paper classifies various types of water according to their total dissolved salt content. It then discusses various technologies for brackish water desalination and their advantages and disadvantages. These technologies include different thermal processes as well as membrane processes. The thermal processes include Multistage Flash (MSF), Multieffect Distillation (MED) and Vapour Compression ...


    By Inderscience Publishers

  • Flocculation of a lactic acid fermentation broth by gelatin

    In the current study, flocculation of a lactic acid (LA) fermentation broth with three kinds of flocculants was performed in order to reduce membrane pollution during its subsequent electrodialysis. Gelatin was selected as the most suitable flocculant in comparison with others in terms of flocculation rate (FR), suspended solid (SS) removal rate, and filtration flux of the supernatant. Optimal ...


    By Inderscience Publishers

  • Role of membranes and activated carbon in the removal of endocrine disruptors

    As part of an American Water Works Association Research Foundation (AwwaRF) research project to evaluate conventional and advanced treatment processes for the removal of endocrine disruptors and pharmaceuticals (Project #2758), several experiments were conducted using membranes and activated carbon. A series of dynamic flow-through membrane experiments were performed at pilot- and full-scale to ...


    By Toray Chemical Korea

  • Spiral wound EDI technology part 1

    Water purification by reducing the concentration of ionic impurities has been an area of considerable technical interest. Water treatment technologies have rapidly advanced in recent years to where a myriad of options have been developed for this purpose. The most well-known processes include electrodialysis, electrodeionization (EDI), liquid chromatography, membrane filtration, and ion exchange. ...


    By Agape Water Solutions, Inc.

  • Mild desalination of various raw water streams

    For chemical industries, fresh water availability is a pre-requisite for sustainable operation. However, in many delta areas around the world, fresh water is scarce. Therefore, the E4Water project (www.e4water.eu) comprises a case study at the Dow site in Terneuzen, The Netherlands, which is designed to develop commercial applications for mild desalination of brackish ...


    By IWA Publishing

  • Selection and economical evaluation of solar desalination technologies via DesalSolar software

    Worldwide projection indicated that in 2020 the situation of water resources in Iran reach to scarcity. Besides, global warming and energy crisis have forced countries to use renewable energy resources. Solar desalination technologies particularly in remote area of Iran could be a method to emancipate from this crisis. In this paper, all kind of desalination technologies were reviewed. Then, ...


    By Inderscience Publishers

  • Existing & emerging concentrate minimization & disposal practices for membrane systems

    As water demand increases and freshwater sources are becoming increasingly stressed in the U.S., there is an impetus for water utilities to treat impaired water sources such as brackish groundwater, irrigation return water, and seawater to meet increasing demands. The efficiency of desalination technology used to treat such waters has improved over the last decade, but there are currently certain ...


    By Lesico CleanTech

  • Defluoridation of drinking water using metal embedded biocarbon technology

    The water that circulates in contact with fluorinated ores is particularly rich in fluoride. The beneficial and the harmful effects of fluoride consumption are well documented. The dental and skeletal fluorosis is the widespread harmful effects of a long consumption of fluoride. WHO recommended level of fluoride in drinking water is 1.5 mg/L. Different methods have been tested for defluoridation ...


    By Inderscience Publishers

  • Efficient Biodestruction of Wastewater-Blended, Oxidant-Laden Residual Streams

    A disadvantage of using separation-based oxidant (i.e., perchlorate, nitrate, bromate) treatment technologies (e.g. ion exchange or membranes) is that they produce an oxidant-laden concentrate that must be disposed or further treated. “Conventional” biological processes can be used to treat oxidant residuals but typically require a dedicated deoxygenation step, inoculation with exogenous ...

  • Evaluation and Testing of Technologies for Brine Minimization at Eastern Municipal Water District

     ABSTRACT Eastern Municipal Water District (Eastern) in Southern California is facing increasing brine disposal challenges at its two inland desalter facilities. In most cases at inland sites, the disposal of brine involves either the dilution of the waste stream in another receiving body or the concentration of brine solutions (Truesdall et al., 1995). In the case of Eastern, brine ...

  • Adsorption of chromium from wastewater by platanus orientalis leaves

    The presence of heavy metals in drinking water can be toxic to consumers; these metals can damage nerves, liver and bones and block functional groups of vital enzymes (Ewan and Pamphlet, 1996). In the recent years, increasing awareness of water pollution and its far reaching effects has prompted concerted efforts towards pollution abatement .Among the different heavy metals from toxic pollutant ...


    By University of Tehran

  • Fluoride sorption using morringa indica –based activated carbon

    Fluoride is an important micro nutrient for the production and maintenance of healthy bones and teeth. Although a certain amount of fluoride gives good protection against dental decay, excess intake of fluoride ions cause dental fluorosis. When the concentration of fluoride is more than 4 mg/L it causes softening of bones, ossification of tendons and ligaments and neurological damage in severe ...


    By University of Tehran

  • Picking Their Membranes - Part I -

    Membrane use by water suppliers may not be new, but suppliers are considering membranes in new ways -- by number and variety of applications. Membranes can work on a wider range of resource waters, more efficiently and for less cost than before. Among membranes' attractions as substitutes for conventional water-treatment technologies, such as filtration, distillation and ion-exchange are: ...


  • What Is Zero Liquid Discharge and How Does It Work?

    Not every industrial facility that produces wastewater will require zero liquid discharge (ZLD). It is usually looked to as a last resort because it can be a complex process that requires a high initial investment. If a facility is located on a site that has severe water scarcity issues and/or astronomical discharge fees, it might be ...


    By SAMCO Technologies, Inc.

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