This paper focuses on recovering tin, lead, and copper (Sn, Pb, Cu) from low-grade printed circuit boards (PCBs). The metals are recovered by series of dissolution, filtration, and electrowinning steps. During electrowinning, copper is recovered as Cu sheets at the cathode, and Pb is recove...
Consequently, the noble metal as an anion complex remain in the anode compartment, and the copper and lead in the form of cation are passed through the membrane and moved to the cathode compartment.;COPYRIGHT: (C)1995,JPOKAWANO ISAMU
In the presence of different levels of mixed carbonyl vapours at 75% RH, copper reacted mainly with formic acid. On the other hand, the reaction of lead was more complex. Acetic acid tends to form a thick white layer (composed mainly of plumbonacrite and possibly lead acetate compounds) ...
Andjelkovic, DarkoSerbian Chemical SocietyJournal of the Serbian Chemical SocietyKOSTIĆ, I.; ANĐELKOVIĆ, T.; NIKOLIĆ, R.; BOJIĆ, A.; PURENOVIĆ, M.; BLAGOJEVIĆ, S.; ANĐELKOVIĆ, D. Copper(II) and lead(II) complexation by humic acid and humic-like ligands. Journal Of...
Lead isotopeshave been extensively used to trace the behavior and transport of lead in soils, to distinguish between natural and anthropogenic lead, and to trace the sources of anthropogenic lead (e.g.,Aultet al., 1970;Gast, 1970;Gulsonet al., 1981;Baconet al., 1995;Erelet al., 1997;...
0.0425 g L−1at 25 °C and 0.056 g L−1at 40 °C. Its solubility in sulfuric acid solution depends on the concentration of H2SO4. Lead sulfate is formed during discharge and self-discharge of the positive and negative battery plates. It reacts with PbO to form basic lead sulfates....
Exponentially growing cells of alga were exposed to the three metals in the form of Cu(NO3)2 5H2O, Pb(NO3)2 and Na2SeO3 5H2O for 24 h. The pH effect on the bioaccumulation of each metal has been investigated. Total copper and lead concentrations were measured by atomic absorption ...
Lead processing, preparation of the ore for use in various products. Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low melting point of
aOther anode materials such as PbrSb, PbrAg, Ti and Ti–IrO2 were also used to examine their effects on electrocatalytic activity for oxidation of SO2 and deposit quality. A rectangular stainless steel cathode of length 8 cm, width 5 cm and thickness 2 mm was used for copper electrowinni...
Near room temperature the noble metals, copper, silver, and gold, all exhibit very similar S values to the other transition metals; however, S vs. T of silver increases at high temperatures faster than linear, whereas S vs. T of gold shows a saturation tendency. The polyvalent metals to ...