Abstract
Abstract The first role of these reactions can be emphasized in the biological oxidation of the compounds that appear in water from the rotting process, but it also requires the presence of microorganisms. A second important role of redox reactions for waste water treatment is to convert pollutants into compounds that are less toxic or even harmless. Oxidation of inorganic substances such as: hexavalent chromium, cyanide can be possible by resorting to the energized oxidizing agents such as sodium metabisulfite or sodium hypochlorite. We experimentally tried to treat waste water from electroplating plants that have a high content of hexavalent chromium by using IC 14D system. First of all, the hexavalent chromium was reduced to trivalent chromium by using the sodium metabisulphite as oxidizing agent. Secondly, the trivalent chromium was removed by passing it into a precipitated Cr(OH)3 in an alkaline medium. After sedimentation, the slurry was removed, water thus treated may be discharged in any effluent.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
