Electronic waste contains hazardous materials which have an adverse impact on the environment. Therefore, a solution is needed to recycle electronic waste. One recovering copper metal from Printed Circuit Board (PCB) in The dissolution of carried out by leaching method, means dissolving using selective solvent. Analysis was performed Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP...

The effect of speed and time stirring for AA6063 matrix manufactured by Electric Induction Furnace reinforced 0.75wt.% 1.5wt.% Al2O3 nanoparticles is studied. Specimens produced were subjected to tensile, microhardness, tribology tests. It observed that an increase in the agitation samples with 0.75%, favors grain size, while opposite pieces 1.5%, where a refining favored, affecting mechanical ...

the nanoparticles of gold doped with various percentage of copper (cu 10%, 25%, 75%) were synthesized by wet-chemical method at room temperature. copper (ii) sulfate and gold (iii) chloride trihydride was taken as the metal precursor and ascorbic acid as a reducing agent and anhydride maleic as surfactant. the reaction is performed with high-speed stirring at room temperature under nitrogen atm...

our aim in this work is the synthesis and study optical and structural properties of gold nanoparticles.gold (iii) chloride trihydratewas taken as metal precursor, ascorbic acid at the presence of an appropriate amount of naoh as reducing agent and polyvinylpyrrolidonek-30 (pvp k-30) as a stabilizing and capping agent. the reaction was performed in high-speed stirring rate at room temperature.s...

A simple and solvent-minimized sample preparation technique based on hollow fibre-protected liquid-phase micro-extraction has been developed for extraction of fifteen organic sulphur compounds from aqueous samples. The analysis of the extracted them was performed by gas chromatography equipped with mass spectrometry and/or flame photometric detectors. 3.3 µL of organic solvent located in the lu...

The effect of the application forced convection during continuous solidification A356 aluminum alloy over microstructural parameters AlFeSi phases has been presented in this work. investigation made on fact that as an solidifies under action a rotating magnetic field; non-dendritic casting structure will be obtained. Al-Si studied using stirring equipment with permanent magnets. This device all...

The effect of mechanical stirring on sol-gel synthesis of thorn-like ZnO nanoparticles (ZnO-NPs) and antimicrobial activities is successfully reported in this study. The in-house synthesized nanoparticles were characterized by XRD, SEM, TEM, FTIR, TGA, DSC and UV-visible spectroscopy. The X-Ray Diffraction analysis revealed the wurtzite crystal lattice for ZnO-NPs with no impurities present. Th...

BACKGROUND The present work was designed to appraise how different extraction solvents and techniques affect the extractability of antioxidant and antimicrobial components from Lantana camara (L. camard) flowers. MATERIAL AND METHODS Four extraction solvents including 100% methanol, 80% methanol, 100% ethanol and 80% ethanol coupled with three extraction techniques namely stirring, microwave-...