Characteristic values
Semi-permeable membranes - Reverse osmosis membranes

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Characteristic values


Semi-permeable membranes - Reverse osmosis membranes

Author : Rémy AUDINOS

Publication date: May 10, 2000 | Lire en français

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2. Characteristic values

The characteristic quantities of commercial osmosis membranes have been grouped into eight groups. These are :

  • of supply, which specifies the manufacturer's name, brand and membrane code;

  • structural properties, which indicate the nature of the active layer;

  • physico-chemical properties, which include the values of the cut-off point and the rejection rate, the compound used for the measurement usually being sodium chloride;

  • transfer properties, including flow-to-water density and recovery rate;

  • mechanical properties, which give the operating pressure (maximum or recommended);

  • of the outfit, which reports the temperature and pH of the environment;

  • ...

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