Old flotation tailings represent a challenging secondary source of Pb due to its association with stable mineral phases. This study investigated Aspergillus niger for Pb bioleaching from old flotation tailings from the Majdanpek mining district, Serbia, with emphasis on Pb biorecovery and post-treatment stability. Bioleaching was performed in soybean-based medium at 25°C for 35 days. Maximum Pb extraction of approximately 43
Glass coatings effectively improve the anti-oxidation performance of carbon steel. The anti-oxidation effect of the glass coatings reached up to 87
This study reports the lithium extraction characteristics of spodumene from the Amareshwar pegmatite deposit in Karnataka, India, which contains about 1.1
The growing demand for efficient electromagnetic interference (EMI) shielding in wireless communication and radar systems necessitates advanced microwave absorbers with broadband performance and lightweight characteristics. Co0.75Ni0.25Ti(1−x)NdxO3 perovskite materials (x = 0.0, 0.025, 0.05, 0.075) were synthesized via solid-state reaction assisted by high-energy wet mechanical milling and sintered at 1000°C for 5 h to investigate the effect of Nd3+ substitution on the particle stability, anisotropy field, and microwave absorption in the C-band (4–8 GHz). X-ray diffraction (XRD) Rietveld refinement confirmed a single-phase hexagonal-rhombohedral structure (space group R-3, JCPDS 15-0866) with excellent agreement (χ2 < 1.3, Rwp < 3.93
