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Register a new userStudy of the electrochemical precipitation process of copper and zinc in the presence of organic materials
دراسة عملية الترسيب الكهركيميائي لمعدني النحاس والزنك بوجود مواد عضوية
1631
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Added by
Aِl-Baath University رسالة ماجستير
Publication date
2016
fields
Chemistry
and research's language is
العربية
Created by
Shamra Editor
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قمنا في هذا البحث بدراسة عملية الترسيب الكهروكيميائي ( الطلاء الغلفاني ) لمعدني النحاس (Cu ) والزنك ( Zn ) على ركازات ( مسارٍ) من الحديد القابل للصدأ
In this paper, we study the electrochemical deposition process (galvanic coating) of copper (Cu) and zinc (Zn) on stainless iron (path) ores.
References used
F. A. lowenheim. Modern electroplating
rate research
Read More
In this research the electroplating method of chromium was used on
iron ore (steel), it is one of the coating methods for the formation of
a roof cover using chromium (III) chloride salts as a source of
chromium and sulfuric acid as a catalyst.
In this research we studied the mechanism of the reaction the solution ( Malonic acid , Zinc , Water ) by using different methods.
In this research, the electrochemical reduction of hydrogen process
and the factors affecting the reduction potential have been studied
in this research. The effect of acid concentration on the shifting of
the volt-ampero-metric curves that expres
s the reduction process
and so its effect on both the reduction potential value of hydronium
ions on drop mercury electrode, and the speed value of reduction
reaction was studied. Then an amount of pyridine as organic
substance was added to a specific volume of acid in a specific
concentration to figure out the relationship between the amount of
pyridine added and the cathode current of the reaction to find out
the effect of added pyridine on the reaction speed and the
relationship between the amount of added pyridine and the
hydrogen reduction potential.
Pyridine was added to amount of acid to study the effect of
theaddition on the hydrogen reduction over potential.
The experiment was carried out to study the ability of Cu and Zn
adsorption on natural Zeolite using six concentration of Cu and Zn
(50, 100, 150, 200, 250, 300) mg.L-1 and two different diameters
of Zeolite particles (0.5mm-1mm). The research aim
ed to define
the ability of Freundlich and Langmuir isotherms equations.
specifically coefficient R2 was used to determine the suitability of
these isotherms.
The concentrations of copper (Cu) and zinc (Zn) in samples of some cereals available at
local markets in Syria weredetermined, after nitric digestion, using Atomic Absorption
Spectrometry. The study showed that the heavy metals were present in all
samples at different
levels. The concentration of heavy metals varied from trace to higher concentration.
The maximum level of copper (Cu) in the cereal samples was 0.426 mg kg-1 on dry
weight basis, where the maximum level of zinc (Zn) in the cereal samples was 2.325mg mg kg-
1 on dry weight basis. The analytical results obtained for the heavy metals indicate that the
copper and zinc were present in all samples at concentration well below the acceptable
concentration recommended by the World Health Organization.
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