REMOVAL OF VANADIUM FROM PETCOKE LEACHATE OVERVIEW In January 2006, Evoqua Water Technologies was contacted by a California business that accumulates, stores and ships petroleum coke to its customers worldwide. “Petcoke” is a byproduct of petroleum refining and consists largely of carbon and ash residuals from crude oil processing. It is used as a fuel source and in the production of metals, among other uses. Depending on the source of the

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