Reducing the Concentrations of Chromium and Cyanide from Industrial Wastewater By Chemical Treatments Substitutes | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 29, Issue 6, April 2011, Pages 271-276 PDF (240.32 K) | ||
| DOI: 10.30684/ etj.29.6.16 | ||
| 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 | ||
| Chromium and Cyanide removing; Gelatin; Industrial wastewater | ||
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