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问题 English 答案 English
Now I’d like to tell you about membrane process classification.
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The degree of selectivity of a membrane depends on the membrane pore size.
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Depending on the pore size, they can be classified as microfiltration (M F), ultrafiltration (U F), nanofiltration (N F) and reverse osmosis (R O) membranes.
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Membranes can also be of various thickness, with homogeneous or heterogeneous structure.
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Membranes can be neutral or charged, and particle transport can be active or passive.
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The latter can be facilitated by pressure, concentration, chemical or electrical gradients of the membrane process.
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Membranes can be generally classified into synthetic membranes and biological membranes.
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