Removal of Carcinogenic Hexavalent Chromium by Reduction with Iron in Presence of Accelerator Non Toxic Organic Compounds (Chalcone) Journal title: JOURNAL OF ADVANCES IN CHEMISTRY Authors: Hanaa H. Abdel Rahman, Amira H.E. Moustafa, Mohamed A. Z. Mostafa, ElsaiedM. Abdel Wahed Subject(s):