الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 136 |  |  |
| | | from | 136 | | |
Abstract
This thesis studies the process of getting rid of metal ions such as Cadmium (III),
Zinc (II), and chromium (II) from the water by adsorption on the surface of activated
carbon obtained from palm fronds as well as the hen eggshells. This thesis contains three
chapters, contains scientific references, an Arabic and English summary, and the aim of the
research.
1- Chapter One: An overview of pollution in general and the pollution resulting from
pollution in general and the pollution caused by these special metals Cadmium,
zinc, and chromium. It also contains a comprehensive survey of previous studies
on the subject of the thesis.
2- Chapter Two: It deals with a review of the practical method used in this thesis, as
well as an explanation of all chemicals and reagents, as well as the devices used in
conducting the adsorption process using the activated carbon obtained from palm
fronds as well as the hen eggshells.
3- Chapter Three: includes the results we obtained and discussed. This part deals with
the study of the ability of the activated carbon obtained from palm fronds as well
as the hen eggshells as a substance that can make adsorption and eliminate
Cadmium, zinc and chromium ions and the extent of the influence of various
factors such as the time of the adsorption process, the amount of the additive,
which has the ability to adsorption and the concentration of these elementary ions,
temperature as well as the acidity of the medium on the adsorption process. to
understand the mechanism of the adsorption process and to know the
thermodynamic factors, many models have been applied to study these phenomena
in the adsorption process.
It was found that the activated carbon obtained from palm fronds as well as the hen
eggshells can adsorb Cadmium, zinc, and chromium ions with high efficiency. The
material of activated carbon obtained from palm fronds as well as the hen eggshells
dependence of the adsorption process on many factors, including the initial concentration
of Cadmium, zinc, and chromium ions, the amount of the substance that has the ability to
adsorption and the temperature was found that by increasing these factors, the percentage
of the process of eliminating ions Cadmium, zinc, and chromium by adsorption on the
surface of the activated carbon obtained from palm fronds as well as the hen eggshells. It
was also found that the adsorption process is at its maximum at the pH scale equal to 1 in
the case of chromium for two surfaces and uptake to 5 in the case of zinc. It was found of
cadmium to be equal to 6.5 in the case of activated carbon obtained from palm fronds and
equal to 5 in the case of hen eggshells. It was also found that the results applied to the FRL
isotherm better than the Langmuir isotherm and that the adsorption process is an automatic
and possible process, and the higher the temperature, the greater the random.