Thread: Is there a Market for "Spent Earth"?
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Old 12-05-2008, 05:30 AM
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Karl Karl is offline
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Location: Trinidad & Tobago
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Only some very general information...

Institut des corps gras - Centre technique industriel - Industrial recovery of by-products: spent earth (cleaning soaps and industrial lubricants)
SpringerLink - Journal Article
Recycling of Spent Bleaching Clay and Oil Recovery
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