Machine Design – June 6, 2013: "...OriginOil Inc., Los Angeles, makes separators that use electromagnetic waves and bubblers to filter additives and coagulated hydrocarbons out of frack water. Verenium Corp., San Diego, sells enzymes to replace acids for dissolving the guar in frack-water proppants. Halliburton Intl. Inc., Houston, manufactures food-ingredient-based CleanStim as a safer alternative to traditional chemicals."
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