Mining companies have become increasingly aware of the potential of microbiological approaches for recovering base and precious metals from low-grade ores, and for remediating acidic, metal-rich wastewaters that drain from both operating and abandoned mine sites. Biological systems offer a number of environmental and (sometimes) economical advantages over conventional approaches, such as pyrome...

Yoshiaki NAKAZAWA*, Kenji TAMURA *, Michitaka YOSHIDA* Katsutoshi TAKAGI† and Mitsutoshi KANO† * Sumitomo Metal Industries, Ltd. Corporate Research and Development Laboratories 1-8 Fuso-cho, Amagasaki, Hypgo, 660-0891, Japan e-mail: [email protected], web page: http://www. sumitomometals.co.jp †Toyoda Iron Works CO., LTD. Product Research and Development DIV.NO.2 4-50 Hosoya-cho...

Schiff bases are versatile ligands and known to be synthesized from the condensation of an amino compound with carbonyl compounds. These compounds along with their metal complexes are considered to be an important as catalysts in various biological processes. Also Schiff base complexes are gaining popularity among the various industries including polymers, dyes and pharmaceutical. This review s...

One of the biggest challenges in Aviation industries is milling part features from prismatic blocks to part features with wall and floor thicknesses very similar to sheet metal assemblies. Much research has gone and is still going into machining processes of thin walled components and near net machining. This paper presents an overview in understanding the importance, criticalities and challeng...

The introduction covers the historical develop­ ment of the Imperial Metal Industries Ltd .. Power Plant and the psychology behind that development. The investigation into the concept of firing solid waste into boilers is detailed, as well as the final design parameters. Details are given of the performance achieved so far, including the problems that had to be overcome. Finally, the author giv...

One of the modern techniques of mixture separation is the application of liquid membranes. They reveal the ability of selective transport of mixture components in which a liquid membrane constitutes a separate phase which separates two other liquid or gas phases. This property of membranes makes them useful in the textile and food industries, in hydrometallurgy, medicine, biotechnology, environ...

Effluent from electroplating industry involved in copper plating and other metal polishing work contain various heavy metal(Cu, Fe, Ni, Pb, Mn and Zn) which have severe adverse effect on health . The present work analyzes heavy metal present in plating shops for a period of one year. Highest copper metal concentration (27.60mg/L) was observed during post monsoon at site AB-5, least copper metal...

Metal accumulation in sediments threatens adjacent ecosystems due to the potential of metal mobilization and the subsequent uptake into food webs. Here, contents of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) and trace elements (Ga, In, Mo, and Se) were determined for river waters and bed sediments that received sewage discharged from traditional and semiconductor industries. We used principal co...