Ricerc@Sapienza

The effect of soil composition on the reduction of hexavalent chromium (Cr(VI)) by zero valent iron nanoparticles was studied. A model was proposed, to investigate both the effect of manganese oxide and the simultaneous effect of manganese dioxide and soil organic matter on the kinetic of Cr(VI) reduction. Fe(0) nanoparticles consumption by the reaction with dissolved oxygen, water and soluble Cr(VI) was taken into account.

The term natural organic matter (NOM) is generally defined as all organic compounds (in dissolved and particulate forms), except synthetic molecules such as organic micropollutants, present in aquatic or terrestrial environments. Hydrophobic acids form the major fraction of aquatic NOM, constituting more than half of the dissolved organic carbon (DOC) in water.