الفهرس 
Title : Remediation of some organic pollutants in an industrial wastewater using modified bentonite
AbstractOnly 14 pages are availabe for public view
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Abstract
Water pollution by industrial effluents contain toxic organic compounds
is a matter of great concern and has been pointed as one of the greatest
problems of modern society which increased largely and reached alarming
levels affecting the living creatures. Population explosion and the increased
industrial activity result in consistent release of toxic effluent. One of the most
popular organic pollutants in the world is dyes. Dyes are used widely in many
industries such as paper, textile, plastic, leather and food industries. Effluents
and wastewater discharge into rivers and natural streams from industries that
use dyes poses certain hazards and environmental problems. Even minor
quantity of dyes can colour huge water bodies which influences aesthetic merit
and decrease light penetration needed for photosynthesis which effect on
aquatic plants. Furthermore, many of dyes are toxic and carcinogenic which
may eventually affect human. Among the various synthetic dyes, crystal violet
(CV) and reactive red (RR) dyes have attracted much attention owing to their
hazardous impacts on the ecosystem, in addition, they are mutagenic and
carcinogenic. Thus there is an imperative necessity to develop a new method
for CV and RR removal. Several treatment technologies are employed to
remove organic pollutants from wastewater but the adsorption process still
remains the best because of its universal nature, cheapness, simple design and
easy operation. Many adsorbing materials have been used to remove dyes from
aqueous solution such as natural clays.