Enhanced Non-Fouling Membranes for Water Purification and Recycling Superfund Research Program Small Business Water Innovation Progress in Research.

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Presentation transcript:

Enhanced Non-Fouling Membranes for Water Purification and Recycling Superfund Research Program Small Business Water Innovation Progress in Research Session I – Sustainable Approaches to Remediation NIH-NIEHS SBIR Phase I Grant #: 1R43ES024625-01 Program Manager: Heather Henry PI/PL: David Battaglia (Lynntech) Email: david.battaglia@lynntech.com Subcontractor: Prof. Emmanuel Giannelis (Cornell University)

Project Summary Objective: Develop anti-fouling osmosis membrane technology for the purification of contaminated waste water sources Areas Needing Improvement Loss of water flow due to membrane pore plugging Mineral scaling Reduce membrane/system maintenance Reduce/eliminate chemical degradation of the membrane Solution: Enhance existing osmosis membranes using precise surface coatings Graphene oxide (linked using polydopamine) Superhydrophilic nanoparticles

Combination of Organic and Inorganic Foulants Membrane Fouling Liu et al., J. Mem. Sci., 2014 Lynntech Combination of Organic and Inorganic Foulants Alginate + Gypsum (CaSO4)

Polyamide/Polydopamine/ Graphene Oxide/ Superhydrophilic Nanoparticles Membrane Enhancement 1 µm 1 µm 1 µm Polyamide Membrane Common Osmosis Membrane Forward Osmosis Reverse Osmosis Water Contact Angle = 70 Polyamide/Polydopamine/ Graphene Oxide Improved Stability Against Mineral Scaling Water Contact Angle = 69 Polyamide/Polydopamine/ Graphene Oxide/ Superhydrophilic Nanoparticles Improved Stability Against Organic and Inorganic Foulants Water Contact Angle = 13

Membrane Testing Testing Conditions 12 Hr Initial Water 48 Hr Alginate 48 Hr Gypsum 30 min Cleaning 12 Hr Water Tested Foulants: Alginate, BSA, SWRM, CaSO4 Tested Membranes: Polyamide, Cellulose Acetate

Next Steps Membranes Testing Outside Testing Multiple types of osmosis membranes Continue to enhance superhydrophilic nature Scale up Graphene Oxide Coating Superhydrophilic nanoparticle coating Testing Reverse Osmosis Forward Osmosis Outside Testing Waste water testing 3rd Party Testing

│ Thank you for your attendance and participation