الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 197 |  |  |
| | | from | 197 | | |
Abstract
Water pollution is come from the wastewater which contain the industrial and
environmental pollutants. Textile dye wastewater is one of the most important pollutants
which has adverse effect on the aquatic life. Furthermore, the leakage of these dyes in the
drinking water cause severe damage to the human health. So, it is necessary to remove
these toxic dyes from the textile effluent before discharging in the water streams.
Dyes are one of the most hazardous chemical compound classes found in industrial
effluents which need to be treated. Among the various classes of dyes, our studied reactive
dyes are one of the prominent and most widely used types of azo dyes and are too difficult
to eliminate. They are extensively used in different industries, especially, textile industry.
Nowadays, there are several methods are used for the removal of dyes from effluents
(physical, chemical and biological). Among these different methods, the biological
treatment methods are the best. Our work is concerned with using algae as biosorbent for
the textile reactive dyes. The algae are a pervasive group of photosynthetic organisms
responsible for the majority of photosynthetic processes in most sunlit streams. They
classified according to cell-containing pigments to three major groups: Chlorophyta (green
algae), Rhodophyta (red algae) and Phaeophyta (brown algae).
The special structure of algal cell wall is the main reason in the algal biosorption
ability due to the presence of different functional groups which responsible for the
biosorption process by algae. Our used reactive dyes are differ from all other dye classes in
that they bind to textile fibers, such as cellulose and cotton, through covalent bonds. They
can react with ionized hydroxyl groups on the cellulose substrate. This mechanism of
binding can also occur with the algal cell surface which enhance the decolorization
process.