nanosized metal oxides dispersed polymer composites constitute a fascinating class of polymer composite materials. synthesis of such composite materials through solvent casting enhances the polymer synthetic technology. solvent casting method was used to prepare cobalt oxide (co3o4) dispersed poly (methyl methacrylate) (pmma) nano composite. x-ray diffraction tool is used to know the structural...

The separation of manganese from cobalt sulfate solutions is crucial in the field spent lithium-ion battery recycling. A membrane-based microreactor used to reveal required mass transfer characteristics as diffusion and chemical reaction. dependence di-(2-ethylhexyl)phosphoric acid (D2EHPA) concentration, pH, metal ion concentration on extraction efficiency are investigated. back-reaction term ...

A cobalt spot test was recently developed (1). Testing for cobalt release is performed by dipping a white cotton stick into a clear yellow cobalt test solution containing nitroso R salt, followed by rubbing of the cotton stick for 20–30 seconds against the test item. A colour change from yellow to red–orange indicates a positive test reaction. The spot test detects approximately 8 ppm cobalt in...