Ostara Nutrient Recovery Technologies

Ostara Nutrient Recovery Technologies is a circular economy company that develops advanced water treatment solutions to recover phosphorus and nitrogen from wastewater streams. Its flagship Pearl® technology facilitates the crystallization of these nutrients into Crystal Green®, a high-performance, slow-release fertilizer that is insoluble in water but soluble in organic acids produced by plant roots. This process helps wastewater treatment plants reduce operational costs and manage struvite scale while preventing nutrient runoff into local waterways. By transforming waste into a sustainable agricultural resource, Ostara addresses global challenges related to water quality and food security. The company's technology is deployed at municipal and industrial facilities across North America and Europe.