An environmentally friendly method for removal of salts from produced water brine

Amel M.M. Al Darmaki, Md Monwar Hossain

Research output: Contribution to journalArticlepeer-review


Produced water is a complex mixture of organic and inorganic compounds and it is mainly salty water. It represents the largest volume of by-products generated during oil and gas recovery operations. As a result, water to oil ratio is around 3:1 that is water cut is 70%. Increasing volume of wastewater over the world has become a big issue of concern, and treatment of this wastewater can generate additional sources of potable water. Therefore, research efforts are devoted to developing a cost-effective technique to reduce high salinity of produced water to a lower value. A new approach is investigated, to remove/reduce salts from moderate to high concentration brine. This method is based on liquid-liquid extraction, and uses an organic phase containing ethanol, cyclohexane and sunflower oil. Experiments were successful to reduce the salinity of brine to approximately 27%–64%, in a single stage, with different concentrations of brine from 40,000 ppm up to 140,000 ppm. This method, is considered to be simple, efficient, environmentally-friendly and uses a sustainable system.

Original languageEnglish
Pages (from-to)85-91
Number of pages7
JournalDesalination and Water Treatment
Publication statusPublished - Jan 2022


  • Brine
  • Liquid-liquid extraction
  • Produced water
  • Removal
  • Salts

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Pollution


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