Over the years, with the active spread and development of the industries, Heavy Metal, which are either used, or produced as byproducts by numerous manufacturing, industrial, refining and mining processes have become ubiquitous, persistent environmental pollutants. India too not exempted from such devasting environmental degradation caused by these pollutants. This study develops a method to ac...

A new mathematical treatment has been developed and implemented in an EXCEL spreadsheet in order to determine average equilibrium functions from the full set of data measured by scanning stripping chronopotentiometry (SSCP) in solutions containing different proportions of heavy metal ions and small-sized ligands. It has been applied to the experimental systems Cd(II)-phthalate and Cd(II)-iodide...

In secondary steelmaking, the refining operation is typically carried out in a metallurgical ladle that is commonly furnished with gas injection facilities. Since gas injection plays an intrinsic role in determining the efficiency of secondary steelmaking and thus the quality of final products, a great volume of work has been conducted mostly utilizing air-water systems at room temperature. Des...

Isomerization of linear alkanes has had considerable importance for the refining industry because the isomers formed in this reaction have high octane number. Most works reported in the literature studied the use of bifunctional catalysts, i.e., ones that have acid sites and metallic sites. In this study, bifunctional monometallic (Ni or Pt) and bimetallic catalysts (Pt-Ni), using HUSY zeolite ...

In the U.S., the chief source of new osmium is copper refining, where this metal is produced as a byproduct. Probably less than 10% of the osmium in the original copper ore is recovered, and 1000-3000 oz troy of osmium is lost each year to the environment as the toxic, volatile tetroxide from copper smelters. In 1971, about 2000 oz troy of osmium was domestically refined, most of which was from...

In this thesis, I propose a holistic approach for capturing, analyzing, and refining behavioral requirements of a software system by synthesizing, analyzing, and refining Modal Transition Systems in a scalable manner.

Precious metals (PM) refining from E-waste recycling are based on hazardous hydrometallurgical processes, including cyanide leaching for gold or aqua regia palladium, which generates an important wastewater production. In this paper, we present electrochemical process, low viscous deep eutectic solvents ChCl:EG 1:2 and 1:3. Au Pd deposition parameters, but also palladium speciation were studied...

Reflective microscopy (RM) is a robust, label free optical imaging technique that allows fast operando measurements of structural changes on metal interfaces at nanoscale in wide field. Based the analysis reflected light, RM can be simply understood as “video camera” to produce photographs studied and thus, it has been used for many years complementary tool visual inspection. However, recent de...

As part of a program to reduce electrical energy consumption in the refining process, the effects of the ozone and alkaline peroxide treatments on fibre and handsheet properties, prior and subsequent to low consistency (LC) refining, were assessed and compared by applying different levels of ozone and a range of peroxide and alkali charges to a primary stage hemlock thermomechanical pulp (TMP)....