Removal of Carcinogenic Hexavalent Chromium by Reduction with Iron in Presence of Accelerator Non Toxic Organic Compounds (Chalcone)

Authors

  • Hanaa H. Abdel Rahman Chemistry Department, Faculty of Science, Alexandria University, Alexandria
  • Amira H.E. Moustafa Chemistry Department, Faculty of Science, Alexandria University, Alexandria
  • Mohamed A. Z. Mostafa Chemistry Department, Faculty of Science, Alexandria University, Alexandria
  • ElsaiedM. Abdel Wahed Chemistry Department, Faculty of Science, Alexandria University, Alexandria

DOI:

https://doi.org/10.24297/jac.v11i4.2205

Keywords:

Hexavalent chromium, Pyrazoloquinoxaline derivatives, Diffusion controlled, Temperature, Quantum calculations.

Abstract

The focus of this work is on Cr, which has two predominant oxidation states of the atmosphere: + â€3, which is an essential nutrient in low doses, and +â€6, which is highly toxic and carcinogenic. We found that, the reduction of Cr6+ to Cr3+ was first order reaction and the rate controlling step is the diffusion of (Cr6+) from bulk to iron surface. Toxicity reduction method includes studding of 1-aryl-3-(1-phenylpyrazolo [3,4-b] quinoxalin-3-yl) -2-propenones derivatives or chalcone derivatives concentration, temperatures and rotation speeds effect, which exhibit a strong dependence and supported that the process is diffusion controlled. Thermodynamic parameter ΔG*, ΔH* and ΔS* are given. Mass transfer study of the process was correlated by the equation: Sh = 0.53Sc0.33Re0.38. The order of acceleration was confirmed by quantum calculations.

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Published

2015-06-16

How to Cite

Rahman, H. H. A., Moustafa, A. H., Mostafa, M. A. Z., & Wahed, E. A. (2015). Removal of Carcinogenic Hexavalent Chromium by Reduction with Iron in Presence of Accelerator Non Toxic Organic Compounds (Chalcone). JOURNAL OF ADVANCES IN CHEMISTRY, 11(4), 3463–3474. https://doi.org/10.24297/jac.v11i4.2205

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