Ceramic Membrane Vs Polymeric Membrane

The trans membrane pressure tmp increase at a constant flux of 150 l m 2 h 1 due to membrane fouling by direct filtration with lake water is investigated for four ceramic al 2 o 3 zro 2 tio 2 sic and a pes pvp polymeric microfiltration membrane s the membrane structures and compositions are characterised with permporometry pore size porosity and xps.

Ceramic membrane vs polymeric membrane.

Polymeric and ceramic membranes aqua aerobic systems provides two types of aqua multibore membranes polymeric and ceramic. This makes these membranes suitable for many applications where polymeric and other inorganic membranes cannot be used. Consequently cleaning effect on membrane fouling is lack of comparability between polymeric and ceramic membrane. Opex l j t this means that as far as the cost effectiveness of the ceramic membrane compared with the polymeric one is concerned the determining factor is the ratio of the term l j t for the two materials.

Ceramic membranes consist of metal aluminum or titanium and non metal oxides nitride or carbide. Mass balance analysis shows that 85 8 of the npoc is. A number of different polymeric and ceramic materials are used to form membranes. Moreover chemical cleaning efficacy on membrane fouling of polymeric membrane 24 25 and ceramic membrane 26 27 has only been studied in isolation with disparate initial fouling extent and different cleaning protocols.

So the membrane replacement component of the opex is then approximately proportional to the ratio of the membrane cost l to the net flux j times the membrane life t. To be made useful the membrane material must be formed or configured in such a way as to allow water to pass through it. The higher degree of fouling on the polymeric membrane is partly due to its lower volume area ratio compared to ceramic membranes. Katie guerra p e of the bureau of reclamation reported on her efforts to put to the test the common assumptions that ceramic micro and ultrafiltration systems though more robust and forgiving have such a high capital cost that polymeric membrane systems provide a lower total operating cost advantage.

The downside of ceramic membranes is the high sensitivity to temperature gradient which leads to membrane cracking. The type of membrane used in an application is dependent on waste characteristics treatment objectives and the best economic solution for the plant. They are generally used for highly acidic or basic environments due to inertness. There are mainly two different types of membrane material.