This Guide has been produced as part of the Leonardo Power Quality Initiative (LPQI), a European education and training programme supported by the European Commission (under the Leonardo da Vinci Programme) and International Copper Association. For further information on LPQI visit www.lpqi.org. Copper Development Association (CDA) Copper Development Association is a non-trading organisation sp...

Methods: Pigs (n = 6024) were randomly distributed into four blocks of two barns per block and allotted within block to diets with either Normal (industry levels) or Reduced TM supplementation. Growth performance was measured for each barn, and individual carcass characteristics were recorded at a commercial packing plant. Fecal samples randomly obtained from at least eight pigs per barn were a...

The article describes the development and application of a new discrete time-event simulation modeling methodology used in the copper mining industry in Chile. The proposed methodology creates a simulation model that represents a mine-mill operation, and it is used to evaluate different improvement options to maximize the system performance. Two applications of this methodology to existing copp...

OBJECTIVE To investigate the relationship between copper speciation and microbial features (microbial communities and copper tolerance level) in order to determine the adverse effect of different forms of Cu on microorganisms. METHODS Tessier's sequential extraction procedure was used to qualify the different Cu forms (exchangeable, carbonate bound, Fe/Mn oxide bound, residue and organic matt...

Abrud river is an aquatic ecosystem exposed to anthropogenic influences exerted by long-term mining. This study examines the level of copper concentrations by assessing both total copper content and ionic forms in surface waters and sediments. These components were studied in 10 control sites located in a section of river that has been exposed to acidic mine water spills and leaks. The partitio...

Recovery of metals from chromated copper arsenate (CCA)-treated southern pine wood particles was investigated using binary acid solutions consisting of acetic, oxalic, and phosphoric acids in a microwave reactor. Formation of an insoluble copper oxalate complex in the binary solution containing oxalic acid was the major factor for low copper removal. Furthermore, the possible complexation of ac...

however, the conventional gold recovery process is cyanidation, due to the recent environmental laws; researchers are looking for alternative methods for the recovery of gold. furthermore, the copper anode slime is one of the most important secondary sources of gold (about 1200 ppm). so, the main objective of the current work is gold separation from copper anode slime as a rich secondary source...

In the manufacture of printed circuit boards, the copper dissolved during etching can be used to replace the copper needed for plating using a liquid ion-exchange agent. Extraction and stripping studies demonstrated the feasibility. The quality of the etchant was not affected by the presence of the ion-exchange agent. Good-quality deposits were plated from the stripping solution with a current ...