Waste metals in the form of metal oxide (hydroxide) sludges are generated in significant amounts by the metal finishing industries, and their accumulations pose problems for disposal and challenges for recycle. The availability of technically feasible efficient separations of metals such as nickel, cobalt, chromium, cadmium, copper, tin, zinc, lead, manganese, molybdenum, and titanium from plat...

Chromium has been used commercially in the United States for more than 100 years in metal alloys and other compounds, as a pigment, and in the tanning and metal plating industries, and many studies have looked at its effects in terms of occupational health. But, although scientists know that Cr(VI) is a human carcinogen and that it can cause other deleterious health effects including kidney and...

Bender, D., and Riordan, F.\ “Electrolytic Recovery of Mercury Metal from a Mercuric C loride-Containing Waste ’‘ Met Wasre Manage. A l t Symp ]roc , Calif Dep Health Serv , 137 (1989). I Higgins, T. E., and Gemmell, A. S , “lndustnal waste recovery and reuse: four industrial wastewater case histories.” Proc Ind Waste Symp., 62nd Annual Con$ Water Pollut Control Fed , 293 (1989). , Crane, A., “...

Electroplated nickel coating on cemented carbide is a potential pretreatment technique for providing an interlayer prior to diamond deposition on the hard metal substrate. The electroplated nickel coating is expected to be of high quality, for example, indicated by having adequate thickness and uniformity. Electroplating parameters should be set accordingly for this purpose. In this study, the ...

Nickel is the major cause of allergic contact dermatitis in the general population, both among children and adults, as well as in large occupational groups. This metal is used in numerous industrial and consumer products, including stainless steel, magnets, metal plating, coinage, and special alloys, and is therefore almost impossible to completely avoid in daily life. Nickel contact dermatitis...

We present a microfluidic technique for precision patterning thin-film metals (silver and gold) without the need for photolithography. This technique is employed for the fabrication of metal resistors that are subsequently utilized as temperature sensors, strain gauges, and fluid flow sensors. Patterns of thin film metal are fabricated by premixing and flowing electroless silver or gold plating...

We present a technique for patterning thin-film metals (silver and gold) without the need for photolithography. The technique involves microfluidics and can be performed on planar or curved surfaces. Patterns of thin-film metal are fabricated by flowing electroless silver or gold plating solutions through predefined microchannels made of polydimethylsiloxane sealed against a surface of interest...