Additive-Free Aqueous Extraction of Copper and Zinc from Sulfidic Tailings Using Fast Microwave-Assisted Pre- and Post-T...
status: published
Parasitic light absorption, rate laws and heterojunctions in the photocatalytic oxidation of arsenic(III) using composit...
Composite photocatalyst-adsorbents such as TiO2/Fe2O3 are promising materials for the one-step treatment of arsenite contaminated water. However, no previous study has investigated how coupling TiO2 with Fe2O3 influences the photocatalytic oxidation of arsenic(III). Herein, we develop new hybrid experiment/modelling approaches to study light absorp...
Micro‐Raman spectroscopy on pigments of painted pre‐Islamic ceramics from the Kur River Basin (Fars Province, Iran) : th...
Micro-Raman spectroscopy was used for the analysis of painted pre-Islamic ceramics from the Kur River Basin (Fars Province, Southwest Iran). A total of 21 sherds were analysed dating from the Neolithic to the Late Bronze Age and belonging to different ceramic wares and sites. The main focus of this research was to identify the pigments used for the...
Micro-Raman spectroscopy for the analysis of materials found in rock art shelters in Piedra Parada valley, Chubut provin...
Micro-Raman spectroscopy was employed for the analysis of samples collected from the shelters Campo Cerda 1, Angostura Blanca and Campo Moncada 1 located in Piedra Parada valley, Chubut province, Argentinian Patagonia. Different coloured layers, degradation products and rock supports were analysed. Haematite (alpha-Fe2O3), goethite (alpha-FeOOH), g...
Synthesis, characterization, and synergistic effects of modified biochar in combination with alpha-Fe2O3 NPs on biogas p...
This study is the first work that evaluated the effectiveness of unmodified (SD) and modified biochar with ammonium hydroxide (SD-NH2) derived from sawdust waste biomass as an additive for biogas production from red algae Pterocladia capillacea either individually or in combination with hematite α-Fe2O3 NPs. Brunauer, Emmett, and Teller, Fourier tr...
Chemical and morphological transformation of ilmenite during modification roasting with chlorine in fluidized bed
The modification roasting of ilmenite with gaseous chlorine in fluidized bed at 650 degrees C -750 degrees C was conducted, prior to hydrochloric leaching for preparation of synthetic rutile. The modification effects were characterized by redox titration, X-ray diffraction, scanning electron microscopy and X-ray fluorescence spectroscopy analysis. ...
Chemical and morphological transformation of ilmenite during modification roasting with chlorine in fluidized bed
The modification roasting of ilmenite with gaseous chlorine in fluidized bed at 650 degrees C -750 degrees C was conducted, prior to hydrochloric leaching for preparation of synthetic rutile. The modification effects were characterized by redox titration, X-ray diffraction, scanning electron microscopy and X-ray fluorescence spectroscopy analysis. ...
Sombric-like horizon and xanthization in polychrome subtropical soils from Southern Brazil: implications for soil classi...
status: published
Purification of specularite by centrifugation instead of flotation to produce iron oxide red pigment
This study used specularite, a high-gradient magnetic separation concentrate, as a raw material in reverse flotation. An iron concentrate with a grade of 65.1wt% and a recovery rate of 75.31% were obtained. A centrifugal concentrator served as the deep purification equipment for the preparation of iron oxide red pigments, and its optimal rotating d...
Purification of specularite by centrifugation instead of flotation to produce iron oxide red pigment
This study used specularite, a high-gradient magnetic separation concentrate, as a raw material in reverse flotation. An iron concentrate with a grade of 65.1wt% and a recovery rate of 75.31% were obtained. A centrifugal concentrator served as the deep purification equipment for the preparation of iron oxide red pigments, and its optimal rotating d...
