Abstract

The attempt on Chromium and Cyanide removing from industrial wastewater
of chemical plotting was achieved by using the natural polymer ( animal gelatin 0
and calcium salts . Among three treatments with non treated wastewater , we were
selected the treatment with calcium chloride and gelatin in which the chromium
(Cr +6 ) reduced from 3.5 mg /l to 0.86 mg / l and the cyanide from 0.06 mg /l to
0.03 mg / l . The treatment with gelatin alone reduced concentration of the cyanide
to 0.015 mg / l. Chromium adsorption in three treatments after two hours of
stabling was ranged between 37 – 75 % and cyanide 30 – 75 % which became
within the limitation.

Keywords