Sillimanite is a very important raw material for the manufacture of refractory bricks used in iron and steel, cement and glass industries. In some coastal stretches of south India, the beach sand is contaminated with shell. After recovering heavy minerals like ilmenite, rutile, zircon and garnet by various physical separation techniques, the final sand containing sillimanite, quartz and shell i...

During metallic zinc extraction from zinc sulphide or sulphide ore, huge quantity of jarosite is being released universally as solid residues. The jarosite mainly contains iron, sulphur, zinc, calcium, lead, cadmium and aluminium. Jarosite released from such industrial process is complex and its quality and quantity make the task more complex for safe disposal. Apart from water contamination, j...

In this study, transport behaviors of graphene oxide (GO) in saturated uncoated (i.e., clean sand) and goethite-coated sand porous media were examined as a function the phosphate. We found that phosphate enhanced GO over wide range solution chemistry pH 5.0–9.0 presence 10 mmol/L Na+ or 0.5 Ca2+). The results mainly ascribed to increase electrostatic repulsion between nanoparticles media. Meanw...

Spent Foundry Sand is one of the largest industrial solid wastes generated by foundries in production iron and steel components. Currently, millions tons molten sands are discarded worldwide. Therefore, this work aims to reuse for glass-ceramic materials, since minimizes environmental impacts related its discarding. The Sand, composed >60% SiO2, was mixed with limestone melted at 1500 °C produc...

Hydroxyapatite nanoparticles (nHAP) have been widely used to remediate soil and wastewater contaminated with metals and radionuclides. However, our understanding of nHAP transport and fate is limited in natural environments that exhibit significant variability in solid and solution chemistry. The transport and retention kinetics of Alizarin red S (ARS)-labeled nHAP were investigated in water-sa...