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Enhanced delivery of “green” polymer coated nZVI to mitigate subsurface contamination. Purpose Develop a smart delivery system of reactive materials to address the remediation of pollutants in very low hydraulic permeability soils such as silts and clays. Challenges Low k H
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Enhanced delivery of “green” polymer coated nZVI to mitigate subsurface contamination Purpose Develop a smart delivery system of reactive materials to address the remediation of pollutants in very low hydraulic permeability soils such as silts and clays. • Challenges • Low kH • Green chemistry • Prevent agglomeration • Reactivity • Eco-toxicity • Deliverability, polarization effect • Description • nZVI used as demonstration concept • Develop nZVI polymer coated particles • Enhance subsurface transport and reactivity • Electrokinetics delivery Schedule/Cost 2011 2012 2013 Milestones Coated nZVi preparation X EK Mobility X X Reactivity assessment X X Delivery/degradation test X X Eco-toxicity assessment X X Payoff Commercially attractive concept. Significant cost savings as compared to in situ stabilization and excavation technologies. nZVI prices range between $10-$50 per lb, where most of the nZVI used in in-situ remediation schemes is wasted due to delivery hindrance. U$S 57K U$S 59K U$S 55K Date: November 16, 2010 PIs: Mahmoud Wazne and Washington Braida V2.1
