Innovative Approaches to Reducing Radium-226 Contamination in Phosphogypsum Waste Stream

$1,000 USD
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Challenge overview


ICL, the Seeker of this Challenge, is one of the world’s leading producers of phosphoric acid, an essential component of fertilizers.

The current process of phosphoric acid production involves reacting sulfuric acid with phosphate rock, a rock enriched in phosphate minerals. The reaction results in the formation of phosphoric acid and phosphogypsum, a white, powdery substance. Phosphogypsum contains radioactive radium-226 (Ra-226) that derives from phosphate rock; its concentration varies in the range of 700-1,200 Bq/kg.  


Phosphogypsum can be further processed in a variety of applications; however, its use is limited due to its radioactivity. ICL is therefore looking for innovative approaches to reducing Ra-226 contamination in the phosphogypsum waste stream or reducing (blocking) its radiation impact.

This is a Prize Challenge which requires a written proposal to be submitted. Awards will be contingent upon the theoretical evaluation of the proposal by ICL. For this Prize Challenge, Solvers are required to transfer all rights to the Intellectual Property (IP) in their proposed solution, to be awarded. However, ICL will consider transferring non-exclusive IP rights for a partial award.

Submissions to this Challenge must be received by 11:59 PM (US Eastern Time) on XYZ, 202N.

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About the Seeker & Eligibility

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 producers 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 people worldwide.

Employees of the ICL Group and its subsidiaries are ineligible to receive awards for this Challenge.

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