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  2. Mapei - Wikipedia

    en.wikipedia.org/wiki/Mapei

    The Mapei Group has been publishing a two-monthly magazine in Italian and English since 1991. Adriana Spazzoli was the editor-in-chief of the magazine called Realtà Mapei for 28 years until 2019. 160,000 copies of the magazine are distributed all over Italy and 22,000 copies of Realtà Mapei International are published worldwide.

  3. Membrane gas separation - Wikipedia

    en.wikipedia.org/wiki/Membrane_gas_separation

    The membrane channels consists of cavities and windows. The energy of the molecules in the cavity is U c and the energy of a particle in the window is U w. Nanoporous membranes are fundamentally different from polymer-based membranes in that their chemistry is different and that they do not follow the Robeson limit for a variety of reasons.

  4. Membrane technology - Wikipedia

    en.wikipedia.org/wiki/Membrane_technology

    Membrane technology covers all engineering approaches for the transport of substances between two fractions with the help of semi-permeable membranes. In general ...

  5. Hollow fiber membrane - Wikipedia

    en.wikipedia.org/wiki/Hollow_fiber_membrane

    Hollow fiber membranes (HFMs) are a class of artificial membranes containing a semi-permeable barrier in the form of a hollow fiber. Originally developed in the 1960s for reverse osmosis applications, hollow fiber membranes have since become prevalent in water treatment, desalination, cell culture, medicine, and tissue engineering. [ 1 ]

  6. Anion-exchange membrane - Wikipedia

    en.wikipedia.org/wiki/Anion-exchange_membrane

    Anion exchange membranes are used in electrolytic cells and fuel cells to separate reactants present around the two electrodes while transporting the anions essential for the cell operation. An important example is the hydroxide anion exchange membrane used to separate the electrodes of a direct methanol fuel cell (DMFC) [ 1 ] or direct-ethanol ...

  7. Thin-film composite membrane - Wikipedia

    en.wikipedia.org/wiki/Thin-film_composite_membrane

    NanoH2O Inc. commercialized a membrane in which zeolite nanoparticles were synthesized and embedded within an RO membrane to form a thin-film nanocomposite, or TFN, which has proven to be more than 50-100% more permeable compared to conventional RO membranes while maintaining the same level of salt rejection. [12] Fuel-cells. Batteries.

  8. Membrane electrode assembly - Wikipedia

    en.wikipedia.org/wiki/Membrane_electrode_assembly

    A membrane electrode assembly (MEA) is an assembled stack of proton-exchange membranes (PEM) or alkali anion exchange membrane (AAEM), catalyst and flat plate electrode used in fuel cells and electrolyzers.

  9. Proton-exchange membrane - Wikipedia

    en.wikipedia.org/wiki/Proton-exchange_membrane

    Polymer electrolyte membrane electrolysis is a technique by which proton-exchange membranes are used to decompose water into hydrogen and oxygen gas. [21] The proton-exchange membrane allows for the separation of produced hydrogen from oxygen, allowing either product to be exploited as needed.