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How effective have membrane separation systems integrated into recent clean fuel strategies been in reducing sulphur levels, octane upgrading, etc.?
 
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02/07/2010 A: RAUL FLORES, PDVSA INTEVEP, fraulf@hotmail.com
Unless you use an "activated" or special membrane which can removes preferential contaminants, a membrane system only adjust the quality in a broad/bulk way. One of these cases is a membrane reactor which could upgrade the octane number in a very special design.