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Investigation of the optimization of the recovery of mineral oil from water

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Abstract

A method has been derived to completely recover mineral oil dispersed in water. The method involves three steps: the emulsification of the mineral oil by adding amphiphiles, the breaking of the emulsion by adding salts and the extraction of the mineral oil by a non-polar aprotic solvent. Various amphiphiles and types and concentrations of salts were tested. By using amphiphiles with HLB numbers in the range 4.7 to 40 a complete recovery of the mineral oil could be obtained for a combination of salts Na2SO4 + NaH2PO4 with total ionic strength of 6 mol/L.

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Authors and Affiliations

  1. Federal Institute for Materials Research and Testing, Rudower Chaussee 5, D-12489 Berlin, Germany, , , , , , DE

    U. Retter, M. Koch & I. Nehls

Authors
  1. U. Retter
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  2. M. Koch
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  3. I. Nehls
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Received: 30 September 1998 / Revised: 8 March 1999 / Accepted: 10 March 1999

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Retter, U., Koch, M. & Nehls, I. Investigation of the optimization of the recovery of mineral oil from water. Fresenius J Anal Chem 364, 777–779 (1999). https://doi.org/10.1007/s002160051432

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  • DOI: https://doi.org/10.1007/s002160051432

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