Technology for in Situ Water Purification of LNAPL Pollution

Sasson Yoel (Casali), HUJI, Faculty of Science, The Institute of Chemistry



Cleantech and Environment

Technology Keywords:

Water treatment, decontamination, remediation, AOP, hydrocarbons,  LNAPL,

 Advanced Oxidation Process, oil spill, wastewater, ground and underground water

Development Stage:

Validation in lab environment –proof of concept and treatment of real cases

Our Innovation

LNAPL is a light non-aqueous phase liquid that exhibits a liquid density less than that of water, hence it forms a floating phase that is not soluble in water (e.g., gasoline, fuel oils). There are three types of possible LNAPL contamination: Oil spill at the water surface; industrial wastewater; long-term sources for continued ground and underground water contamination. Therefore, the LNAPLs are a great environmental concern. Despite a variety of available solutions, the global community is still searching for a robust, effective and rapid method suitable for both mobile and residual fraction.

Our technology is a physicochemical method for rapid and effective in situ water purification of LNAPL pollutants (Organic compounds floating on a water surface). The method includes an AOP-based unique combination that contributes to the decomposition reaction rate of LNAPLs, conversion of 99% rapidly (< 1hr).


  • This complex disassembles the contaminates in to environmentally-friendly end products and the reaction does not produce hazardous side products
  • Relatively inexpensive due to use of previously developed method for radical production


The Opportunity

  • Water pollution due to LNAPLs (Light Non–Aqueous Phase Liquids) is a worldwide problem. The Globally Produced Water Treatment market is estimated at $8 billion and poised to reach approximately $8.6 billion by 2025, according to a report from Research and Markets.
  • The technology proposed is relevant for different mediums (waste, sea, and ground water) hence, the complex gives a solution for industrial, domestic and environmental contaminations. Industrial partners could include the electronic industry, water treatment companies, and petro chemical industry.
  • AOPs are considered a relatively expensive purification method. Prof. Sasson’s current technology is using an alternative advance AOP agent (not HO). This technology is based on a previously developed unique method for radical production, which was shown to be applicable, effective and inexpensive. This method can be of specific solution in different mediums.
  • Easy to implement (including from an airplane) in the case of crude oil spill.

Development Milestones

Preliminary results to support the core of the invention were obtained in a laboratory environment - sample of contaminated industrial waste water (see figure below).

Next steps are in-situ scale up and pilot


Contact for more information:

Matt Zarek
Contact ME: