Printed circuit board (PCB) waste is generally dumped as a landfilling or treated pyrometallurg ically, which consumes enormous power, generates hazardous gases and also destroys valuable PCB components. For recycling of the components, they must be separated from the printed circuit boards which is a cumbersome task. For its simplification, the rate of d issolution of solder with acids like Hy...

In this study, the importance of individual soil mineral constituents on non-ionic surfactant sorption is evaluated by employing scanning electron microscopy (SEM) equipped with energy-dispersive X-ray analysis (EDAX) to observe microchemical surface composition of model soil colloids and relate surface microchemical composition to the sorption behavior of a non-ionic surfactant, Polyethylene G...

The cadmium chalcogenides CdSexTe1-x ( 1 x 0 ≤ ≤ ) thin films have been electrodeposited onto ITO coated glass substrates from an acid sulfate solution at 90 °C. The structure, the composition and the morphology have been studied as a function of the x coefficient by XRD, EDAX, optical absorbance and AFM techniques. All deposits have a cubic structure with a preferred orientation along the (111...

ZnO is one of the most promising materials since it has a high mechanical and thermal stability, and wide band gap (3.37 eV). Meanwhile, doping with selective elements offers an effective method to enhance and control the electrical and optical properties of ZnO nanostructures, which is crucial for its practical applications. Mg-doped ZnO have considerable interests owing to their unique optica...

1 Post-graduate & Research Department of Zoology, ANJA College (Autonomous), Sivakasi, India. *Corresponding Author E-mail: [email protected] Abstract The present study deals with synthesis and characterization of silver nanoparticles using aqueous extract of goat faecal pellets. The production of silver nanoparticles was analyzed by preliminary changes of colour from pale yellow to da...

All industrial processes especially metal cleaning procedures dealing with dangerous solutions should be used as little as possible and their emission into the aquatic environment should be controlled. In this study, in order to find a proper and efficient cleaning process, lead pollution was removed from the solid matrix by using a cleaner solution containing EDTA and H2O2 as chelating and oxi...

Zinc nickel alloy was deposited from alkaline bath at a PH of 13-14 with the nickel percentage of 5-9% in our prior research. Present study dealt with the research on 10-12% of Nickel at a PH of 12-13 from Zinc – nickel alloy electrolyte and the remaining percentage of Zinc, required for corrosion resistant applications to be used for reliable alternative of cadmium. Hull cell studies was carri...

Abstract In this project, nano-ZrO2 particles were dispersed in aluminum powder by a Y-shape mixer. The particle size of ZrO2 powder was < 40 nm and the amount of ZrO2 reinforcement varies from 3 to 15%.The mixed powders were compacted .Subsequently the compacted discs were sintered both in the microwave oven and in the conventional muffle furnace .Using microwave –assisted sintering method led...

A novel, cost-effective, easy and single-step process for the synthesis of large quantities of magnetic metal-encapsulated multi-walled carbon nanobeads (MWNB) and multi-walled carbon nanotubes (MWNT) using catalytic chemical vapour deposition of methane over Mischmetal-based AB3 alloy hydride catalyst is presented. The growth mechanism of metal-encapsulated MWNB and MWNT has been discussed bas...

OBJECTIVE To understand the potential fracture mechanism of sternal wires, we collected extracted stainless steel sternal wires from patients with sternal dehiscence following open-heart operations. Surface alterations and fractured ends of sternal wires were inspected and analyzed. METHODS Eight fractured and 12 non-fractured wires extracted from five patients (closure method: figure-of-eigh...