Efthimia Kaprara

TL;DR: In this paper, a review summarizes the recent research in the field of inorganic engineered nanoparticles development with direct or potential interest for drinking water treatment. But, despite early encouraging results, nanoparticles meet a number of limitations to get promoted and become part of large-scale water treatment plants.

TL;DR: Findings indicate that under specific conditions, pollution of water by Cr(VI) is favorable by a slow MnO2-catalyzed oxidation of soluble Cr(III) to Cr( VI) in which manganese products [Mn(III)/Mn (II)] are probably re-oxidized by oxygen.

TL;DR: Geochemical and mineralogical analyses showed that chromium concentrations in soils and sediments range from 115 to 959 mg/kg and that serpentine prevails among the phyllosilicates and, therefore, in groundwater, and the high correlation between chromium and serpentine, amphibole and pyroxene minerals verifies the geogenic origin of chromium in soils.

TL;DR: The presence of Cr(VI) in the groundwater of this area is thought to originate from both the ophiolitic rock weathering products in the soils, and the local leaching of Cr (VI) from the diffused fly ash located in the area surrounding the lignite power plant.

TL;DR: The successful operation of a small-scale system consisting of a contact reactor and a magnetic separator demonstrates a way for the practical introduction and recovery of magnetite nanoparticles in water treatment technology.