Processing solutions

The described method addresses inefficiencies in existing water processing technologies by using nano-filtration and controlled evaporation to produce high-yield potassium sulphate and other salts, reducing costs and membrane fouling, and is well-suited for low-cost, energy-efficient operations.

WO2026123048A1PCT designated stage Publication Date: 2026-06-18SMOLENAERS PETER
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SMOLENAERS PETER
Filing Date
2025-11-28
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing methods for processing sea water, lake water, and borehole water to recover potassium sulphate and other valuable compounds are inefficient, leading to low yields and high costs due to issues such as membrane fouling, precipitation, and the need for external heat and chemical disposal.

⚗Method used

A method involving nano-filtration to separate magnesium, sodium, and chloride ions, followed by evaporation to produce sodium chloride precipitate and potassium solution, and combining calcium and sulphate at controlled temperatures to form potassium calcium sulphate precipitates, such as syngenite, with optional steps for calcium and magnesium recovery.

🎯Benefits of technology

This method achieves high yields of potassium sulphate and other valuable salts, reduces membrane fouling, and operates efficiently with low-cost inputs, particularly suitable for tropical climates with abundant solar energy.

✦ Generated by Eureka AI based on patent content.

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Abstract

A method comprising nano-filtering 3 (an input solution comprising magnesium, sodium, potassium and chloride) to produce a first filter output (comprising potassium, sodium and chloride) and one or more second filter outputs comprising at least most of the magnesium. The method further comprises evaporating 4' (a post filter solution comprising ions from the first filter output) to produce sodium chloride precipitate and an evaporator output solution. The method further comprises combining 9 (calcium and sulphate with a post evaporator solution, comprising ions from the evaporator output solution) to produce at a reaction temperature potassium calcium sulphate precipitate and a combination output solution.
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