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Membrane reverse washing as a method of neutralising the fouling process
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One of the major obstacles which hinder more widespread application of ultrafiltration is that the flux declines with time. This phenomenon is commonly termed as membrane fouling. There are two essential mechanisms for membrane fouling in crossflow ultrafiltration,namely, pore blocking which is responsible for the initial sharp drop from the flux of pure water filtration, and cake formation which is the cause of long-term gradual flux decline. Membrane fouling reduces production rate and increases complexity of membrane filtration operations since the system has to be halted frequently to restore the flux by backflushing. The resultant elevated cost makes ultrafiltration economically less feasible for many separation problems. Rapid backflushing to reduce membrane fouling during crossflow ultrafiltration was studied.
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Tom
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73--78
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Bibliogr. 18 poz.,
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bwmeta1.element.baztech-article-BGPK-0638-3043