ICL Challenge: Concentrating Hypersaline Brine Solutions

Challenge details

Name: ICL Challenge: Concentrating Hypersaline Brine Solutions
Challenge type: Reduction to Practice (RTP)
Award: $40000
Deadline: 4th Jan 2022

Challenge overview


Israel Chemicals Ltd (ICL), the Seeker for this Challenge, seeks an energy-efficient method to enhance production of potash from hypersaline brine solutions. The method must remove water in a recoverable way from the solution so that the water may be returned to the source of the brine.

This is a Reduction-to-Practice Challenge that requires written documentation and experimental proof-of-concept data.



The Dead Sea Works, operated by the Seeker, ICL, extracts brine from the Dead Sea for production of salt, potash, and other important minerals primarily through evaporation processes. Residual hypersaline streams, known as F-streams, are produced as a result of these processes. The F-streams are high in potash content but extraction of a large portion of the potash is difficult and current methods are estimated to recover just 50% of the available potash. ICL is seeking an innovative, energy-efficient method that increases potash recovery by removing water from the F-streams without losing the water so that it may be returned to the Dead Sea in order to keep the water balance of the Dead Sea steady.

The submission to the Challenge should include the following:

  1. The detailed description of the proposed Solution addressing specific Technical Requirements presented in the Detailed Description of the Challenge. This description should be accompanied by a well-articulated rationale supported by literature/patent precedents.
  2. Experimental proof-of-concept data obtained as outlined in the Detailed Description of the Challenge.  

The Challenge award is contingent upon theoretical evaluation and experimental validation of the submitted solutions by the Seeker.

To receive an award, the Solvers will not have to transfer their exclusive IP rights to the Seeker. Instead, Solvers will grant to the Seeker a non-exclusive license to practice their solutions. 

Submissions to this Challenge must be received by 11:59 PM (US Eastern Time) on 04-Jan-2022.
Late submissions will not be considered.



This is an external Challenge only. Employees of the ICL Group and its subsidiaries are ineligible to receive awards for this Challenge.


ICL, a global manufacturer of products based on unique minerals, fulfills humanity’s essential needs, primarily in three markets: agriculture, food and engineered materials.

The experience, knowledge and professionalism derived from establishing Israel’s potash industry over a period of 80 years of intensive activity and major investment in R&D, have transformed ICL into a world leader in specialty fertilizers, bromine and flame retardants. ICL produces approximately a third of the world’s bromine, and is the world’s sixth largest potash producer, as well as one of its leading providers of pure phosphoric acid.

ICL’s operations are global and are supported by worldwide distribution and supply chains. Our mining and production sites are located in Israel, Europe, North and South America and China. ICL employs about 13,000 persons worldwide.


What is InnoCentive?

InnoCentive is the global innovation marketplace where creative minds solve some of the world's most important problems for cash awards up to $1 million. Commercial, governmental and humanitarian organizations engage with InnoCentive to solve problems that can impact humankind in areas ranging from the environment to medical advancements.

What is an RTP Challenge?

An InnoCentive RTP (Reduction to Practice) Challenge is a prototype that proves an idea, and is similar to an InnoCentive Theoretical Challenge in its high level of detail. However, an RTP requires the Solver to submit a validated solution, either in the form of original data or a physical sample. Also, the Seeker is allowed to test the proposed solution. For details about treatment of Intellectual Property (IP) rights, please see the Challenge Specific Agreement.