Scanning electron microscopy and magnetic characterization of iron oxides in solid waste landfill leachate

The rare earth elements in municipal solid waste incinerators ash and promising tools for their prospecting

“…Nevertheless, the measurements of MSWI ashes reported here are rather consistent with those of sediments near Fe-smelters (200-600 × 10 −8 m 3 /kg [27]) and from MSW landfill (64-970 × 10 −8 m 3 /kg [15]). …”

“…Simultaneously, the magnetic susceptibility measurement of MSWI ash samples was adopted as complementary or alternative tool for geochemical prospecting of REE in urban mines. As a fact, magnetic analyses have been correlated with heavy metal contents in a range of materials [12][13][14][15][16], including coal fly ashes [17,18], and discriminating plots derived from magnetic susceptibility measurements have a great potential to determine the source of magnetic minerals as well as the environmental impact. Remarkably, correlations between the magnetic susceptibility and REE were observed within samples from urban areas [19,20], which, in turn, suggested the need to measure such parameter in the current study.…”

Impact of wastewater application on magnetic susceptibility in Terric Histosol soil

“…Cr did not show an anthropogenic increase. This element should be treated as a common factor with distributions in the soil being lithologically controlled (Dankoub et al, 2012;Huliselan et al, 2010). No correlation between Pb and MS was observed by other authors (Gelisli and Aydin, 1998;Schmidt et al, 2005).…”

Assessing the Use of Magnetic Methods to Monitor Vertical Migration of Metal Pollutants in Soil

“…The existing grass inside the tubes was removed prior to contaminating half the number of tubes with iron oxide powder (magnetite milled to <5 μm by READE Advanced Materials®, USA). Iron oxide was chosen to simulate contamination because several forms of iron oxide have been studied intensively in environmental magnetic studies as they constitute the most common magnetic particles in pollutants (Huliselan et al 2010). The amount of the pollutant to be distributed per tube was determined by reference to Magiera et al (2007) who found, using heavy metal analysis of polluted soils, that the iron (Fe) concentration was in the range of 0.7 to 9.7 g/kg in soil cores, and that the highest concentration of dust per area in the region (Upper Silesia, Poland) was 600 g/m 2 .…”

“…With true K being determined, the mass-specific low frequency susceptibility (χ) was calculated by dividing true K of the sample by its mass. This parameter is used frequently because it approximates concentration of magnetite in the sample (Huliselan et al 2010). χ-depth profiles were plotted for the vertical assessment of MS.…”