Arianne Phosphate Successfully Completes Pilot Scale Purified Phosphoric Acid Production with Travertine Technologies

Executive Summary

• AriannePhosphate successfully completed pilot-scale production of purified phosphoric acid (PPA) using its high-purity phosphate concentrate and Travertine Technologies' proprietary electrochemical process.
• The partnership demonstrated a highly efficient, virtually closed-loop system that recaptures over 95% of sulfur and eliminates phosphogypsum waste, yielding PPA that meets specifications for LFP batteries and technical-grade applications.
• Arianne has secured an option agreement for a facility to host a demonstration plant, positioning itself as the only Canadian-based PPA producer to address Western supply chain demands and reduce reliance on Chinese-dominated LFP manufacturing.

Key Details

• Partnership & Agreements: Partnership initiated via MoU in November 2025, followed by a joint-venture framework agreement signed in early June 2026.
• Pilot Testing: Conducted at Travertine’s facility in Boulder, Colorado, successfully demonstrating proof of concept for high-quality PPA production.
• Process Efficiency: The proprietary process recycles over 95% of sulfur used, creating a virtually closed-loop system that eliminates phosphogypsum waste and reduces operating expenses (OpEx) compared to traditional PPA production methods.
• Product Specifications: The produced PPA meets technical requirements for lithium-iron-phosphate (LFP) batteries, as well as food, pharmaceutical, electronics, and semiconductor applications.
• Demonstration Plant: Arianne entered an option agreement (referenced from April 21, 2026) for a facility to house a demonstration plant to scale PPA production.
• Market Positioning: The demonstration plant will be the only Canadian-based PPA producer, targeting customers seeking to mitigate single-supply risk amid geopolitical uncertainties and China's current dominance in LFP battery production.
• Next Steps: The companies are advancing the demonstration plant project and actively engaging with potential partners and end-users.

Notable Quotes

• Brian Ostroff, Head of Strategic & Business Initiatives, AriannePhosphate: “These results are extremely encouraging as Arianne looks to move downstream and become a producer of purified phosphoric acid... Having the only permitted phosphate project in the West, the advanced nature of our phosphate mining project coupled with the ability to transform our concentrate into PPA will provide an alternative to the current supply challenge. Further, working with Travertine has allowed us to produce PPA in a more environmentally friendly way, removing the phosphogypsum waste and reducing the OpEx associated with the sulphur requirement used in the traditional process for producing PPA.”
• Laura Lammers, Founder and CEO, Travertine Technologies: “Travertine was founded to eliminate the sulfur bottleneck and the sulfate waste problem inherent in the production of critical minerals, starting with phosphate... Our core technology recycles sulfuric acid and virtually eliminates phosphogypsum waste, turning an environmental liability into decarbonized building materials.”