Extracting glutamic acid from waste sugar by AFC99 polyamidemembrane with reverse osmosis was tested with increase in extraction percentage and producing efficiency.
The membrane that can withstand such force is made of polyester, polysulfone and polyamide and is held within the white steel cylinders.
能够抵挡这股压力的膜是用聚酯、聚砜和聚酰胺作的，并且固着在白色钢桶之内。
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Asymmetric reverse osmosis (ro) polyamide (pa) composite membrane may be modified by means of solvent processing technique into pervaporation (PV) membrane for separating organic aqueous solution.