Bipolar membrane electrodialysis stacks for the production of an organic acid.

 

    Electrodialysis stacks for the removal of salt from runoff water
 

Chemical/ Pharmaceutical Industry

The Eurodia/Ameridia separation expertise has found many applications in the chemical and pharmaceutical industries, including the chemical operations of related industries, such as pulp & paper, mining, food, fermentation, petrochemicals, plating, etc.

  • More than 40 conventional AQUALYZER ® & Bipolar membranes AQUALYZER ® plants have been installed for chemical processing worldwide. In general, the objective is the removal/separation of ionized (acids, bases, salts) from non-ionized compounds or the acidification/basification of process streams.

  • About half of the new ISMB® or NMCI® chromatography plants installed by Eurodia are for the purification/separation of polyols and other organic products. These processes can be effectively used to separate and purify many large volume organic products, such as organic acids.  

  • The Scepter® micro- and ultrafiltration sintered stainless steel tubular membranes have some attractive properties for chemical uses, such as high pH and chemical stability, high temperature and viscosity compatibility, stability in organic solvents, etc.

  • Ion exchange resins and membrane filtration have well-known applications in the chemical and pharmaceutical industries.

    • Applications include:

    •        Separation of antibiotic components
    •        Separation of chemical components
    •        Desalting of chemical products
    •        Demineralization of amino acids, peptides, & proteins
    •        Production of acids & bases from salts
    •        Isotonic solution demineralization
    •        Chemical substitution
    •        Fermentation liquor purification
    •        Chemical purification & demineralization
    •        Regeneration of plating baths
    •        Effluent treatment
    •        Regeneration of gas purification adsorbents
    •        Etc.

    Electrodialysis (ED)

    Eurodia Industrie and its parent company Tokuyama Corporation have introduced new types of membranes and gaskets that offer good resistance in many chemical streams.  Thanks to these, the smooth operation of electrodialysis stacks has been achieved at several chemical plants. This positive operating experience continues to encourage progressive companies to implement electrodialysis as a separation process to remove or separate ionized compounds (such as salts, acids, and bases) from non-ionized products. In addition, the separation of ionized compounds between themselves is now possible thanks to the development of several monovalent selective cation and even anion-exchange membranes.  Recently, temperature resistant membranes and gaskets have been introduced, allowing operation at temperatures up to 60°C (140°F) that could offer additional benefits in some processes. This practical experience shows that it is possible to effectively apply electrodialysis in the processing of many chemical compounds.  It is a practical process step that can be integrated in the control system of a chemical plant, even if the case of streams containing many organic contaminants. 

    Electrodialysis with Bipolar Membranes (EDBM)

    Thanks to the novel bipolar membrane in an electrodialysis stack, water can be efficiently split into H+ and OH- ions allowing the production of acids and bases from salts.  EDBM can also be useful to acidify or basify a process stream without the addition of different chemicals. This eliminates purity issues and effluent problems.
 
 
For new electrodialysis applications in the chemical and pharmaceutical industry, Ameridia cooperates with the Electrosynthesis Company (Lancaster, NY) for laboratory and pilot testing. For more information, click here
  
 

 

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