Rzolv shows lower trout toxicity than cyanide

Executive Summary

• Rzolv Technologies Inc. released results from an independent ecotoxicity report by Centre Technologique des Residus Industriels (CTRI) demonstrating that its proprietary Rzolv reagent exhibits significantly lower acute aquatic toxicity compared to cyanide.
• The study utilized standard aquatic bioindicator organisms (rainbow trout and water fleas) and found the 96-hour LC50 for Rzolv to be approximately 57,000 times higher than published cyanide reference values, indicating a markedly lower acute aquatic hazard profile.
• The company positions these findings as a validation of Rzolv’s value proposition as a safer, non-cyanide hydrometallurgical platform for precious and critical metals recovery, potentially offering commercial advantages in jurisdictions with strict environmental permitting and water management requirements.

Key Details

• Testing Authority: Centre Technologique des Residus Industriels (CTRI), a recognized leader in environmental technologies and ecotoxicology.
• Test Subjects:
  • Oncorhynchus mykiss (Rainbow Trout)
  • Daphnia magna (Water Flea)
• Testing Standards: Conducted under controlled laboratory conditions in accordance with Canadian reference methods SPE 1/RM/13 and SPE 1/RM/14.
• Toxicity Comparison (Rainbow Trout):
  • The nominal 96-hour LC50 for Rzolv was approximately 57,000 times higher than the cited cyanide LC50 reference.
  • Cyanide reached the same lethal endpoint at roughly 1/57,000th the concentration required for Rzolv.
• Interpretation: The report concludes that Rzolv "could serve as a safer substitute, presenting significantly lower environmental hazard" due to the greater sensitivity of test organisms to cyanide than to Rzolv.
• Contextual Caveats: The company notes that differences in test matrix, pH, hardness, alkalinity, dissolved oxygen, and temperature may influence observed toxicity; therefore, the comparison is directional and contextual rather than a definitive head-to-head study under identical conditions.
• Strategic Implication: Rzolv believes the lower-toxicity profile supports integration with conventional recovery infrastructure and offers a meaningful commercial advantage where permitting, water management, detoxification requirements, and environmental risk are key project drivers.

Notable Quotes

• "This report adds an important environmental data point to the Rzolv value proposition... We believe these results further validate Rzolv's potential as a lower-toxicity hydrometallurgical platform for modern mining and resource recovery." — Duane Nelson, President and CEO, Rzolv Technologies
• "Our goal has always been clear: to create a practical, scalable non-cyanide platform for precious and critical metals recovery that works within existing infrastructure while materially improving the environmental profile of conventional extraction systems." — Duane Nelson, President and CEO, Rzolv Technologies