The widespread occurrence of dense non-aqueous phase liquids (DNAPLs) such as tetrachloroethene (PCE) and trichloroethene (TCE) in groundwater and in soil is of serious environmental concern. Nanoscale zerovalent iron (NZVI) particles are a preferred option for the reductive dehalogenation of chlorinated hydrocarbons due to their environmentally benign nature, high efficiency and low cost. However, it is difficult to transport these particles to the source of contamination due to aggregation. In this study, we describe the synthesis of spherical iron-carbon (Fe-C) composite nanoparticulate systems through a facile aerosol-based process for the simultaneous adsorption and reduction of chlorinated ethenes. These Fe-C composites provide the requisite characteristics of adsorption, reaction, and transport for the effective in-situ remediation of dense non aqueous phase chlorinated hydrocarbons. The presentation will focus on detailed characterization of these composite materials through high resolution electron microscopy and the fundamental aspects of adsorption, transport and reaction using these materials

Environmental remediation of dense non-aqueous phase liquids using adsorptive-reactive nanoparticulate systems

245th National Meeting (2013)

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