@Article{, title={Reducing the Concentrations of Chromium and Cyanide from Industrial Wastewater By Chemical Treatments Substitutes خفض تراكيز الكروم والسيانيد في المياه العادمة الصناعية باستخدام بدائل المعالجة الكيميائية}, author={علي شهاب احمد علي and أحمد جاسم مخلف}, journal={Engineering and Technology Journal مجلة الهندسة والتكنولوجيا}, volume={29}, number={6}, pages={271-276}, year={2011}, abstract={The attempt on Chromium and Cyanide removing from industrial wastewaterof chemical plotting was achieved by using the natural polymer ( animal gelatin 0and calcium salts . Among three treatments with non treated wastewater , we wereselected 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 to0.03 mg / l . The treatment with gelatin alone reduced concentration of the cyanideto 0.015 mg / l. Chromium adsorption in three treatments after two hours ofstabling was ranged between 37 – 75 % and cyanide 30 – 75 % which becamewithin the limitation.

} }