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Thermodynamic Studies of Chromium Adsorption on Iron Species Generated by Electrocoagulation
Author(s) -
Parga J. R.,
Vazquez V.,
Gonzalez G.,
Cisneros M. M.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000186
Subject(s) - lepidocrocite , electrocoagulation , chromium , adsorption , magnetite , iron oxide , fourier transform infrared spectroscopy , langmuir adsorption model , hematite , chemistry , scanning electron microscope , wastewater , maghemite , reagent , nuclear chemistry , chemical engineering , materials science , metallurgy , environmental engineering , goethite , environmental science , organic chemistry , engineering , composite material
The protection of the global environment and in particular, the provision of a sustainable source of clean water is a necessity for human survival. Specifically, large quantities of chromium containing compounds are being discharged into the environment. This study has been carried out to determine the feasibility of chromium adsorption on iron species by an Electrocoagulation (EC) process using the Langmuir Isotherm. The full potential of EC with air injection as an alternative wastewater treatment technique to remove chromium from well water shows more than 99 % removal without the addition of any chemical reagents. In this study, X‐Ray Diffraction, Scanning Electron Microscopy, Mössbauer Spectroscopy and Fourier Transform Infrared Spectroscopy are used to characterize the solid products that reveal the expected crystalline iron oxides, i.e., lepidocrocite, magnetite, gohetite, and iron oxide.