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Purolite, TransBiodiesel announce joint technology effort

Purolite and TransBiodiesel announced a joint effort to manufacture and market enzyme loaded ion exchange resins to replace traditional transesterification processes. "Our enzyme loaded ion exchange resin replaces the use of sodium methylate and provides the simultaneous esterification of free fatty acid and transesterification of fats and oils," said Don Brodie, vice president of operations at Purolite. The resulting biodiesel is easy to separate from crude glycerin because of the absence of emulsifying soaps. Crude glycerin is significantly free of contaminants and can be more readily refined. The use of low-grade oil feedstocks, especially those with free fatty acid higher than 3 percent and even up to 100 percent can now be employed.
 

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