Sustainable polylactic acid bioplastic from dairy waste
This research explores the conversion of dairy wastewater into compostable polylactic acid (PLA) bioplastic using acidic catalysts. By optimizing catalyst selectivity, the process aims for efficient production of lactic acid, a key monomer for PLA, contributing to sustainable waste management.
Overview
This innovative research focuses on transforming dairy wastewater into sustainable polylactic acid (PLA) bioplastic. By utilizing acidic catalysts, the process converts residual lactose into lactic acid, a monomer essential for creating compostable PLA. This approach not only adds value to dairy waste but also supports the production of eco-friendly bioplastics, contributing to sustainable waste management and reducing environmental impact.
Technical specifications
Key features:
- Utilizes acidic heterogeneous catalysts for lactose conversion
- Achieves 100% conversion of lactose with 30% selectivity for lactic acid
- Future work includes testing various metallic catalysts to enhance selectivity and productivity
- Continuous process development with intensified reactor use
- Incorporates nanofiltration and purification steps for PLA production
Technology readiness level
Currently at TRL 3, this technology has shown promising results in preliminary tests with a focus on catalyst optimization. Future validation aims to enhance catalyst selectivity and increase production efficiency, with plans for collaboration to scale the process.
About École Polytechnique de Montréal
Polytechnique Montréal is a large public engineering school affiliated with Université de Montréal, combining rigorous academic programs with applied research at scale. Industry engagement is built into the model through structured co-op and internship pathways, on‑campus collaboration spaces, and longstanding partnerships with regional and global firms. Its location within a major research university ecosystem—and near teaching hospitals and startup hubs—helps companies move from prototype to validation and deployment. Research is supported by competitive federal funding from agencies such as NSERC and the Canada Foundation for Innovation, alongside provincial and industry investment. A dedicated technology transfer office assists with IP strategy, licensing, and startup formation, with streamlined agreements for sponsored research.
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