Chemical treatments
Chemical and physico-chemical treatment of hazardous industrial wastewater

Article REF: G2070 V3

Chemical treatments
Chemical and physico-chemical treatment of hazardous industrial wastewater

Authors : Valérie LAFOREST, Jacques BOURGOIS, Robert HAUSLER

Publication date: November 10, 2020, Review date: March 1, 2023 | Lire en français

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2. Chemical treatments

2.1 Redox

The aim of redox waste treatment is to transform pollutants:

or in a form that is less harmful to the environment and can be discharged into the natural environment:
- when cyanides or organic molecules are oxidized: cyanide ions CN ^- are thus oxidized into less dangerous cyanate ions CNO ^- :
  ${CN}^{-} + {ClO}^{-} \to {Cl}^{-} + {CNO}^{-}$

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Physico-chemical treatments

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Bibliography

(1) - BYRNES BROWER (J.), RYAN (R.L.), PAZIRANDEH (M.) - Comparison of ion-exchange resins and biosorbents for the removal of heavy metals from plating factory wastewater. - Environ.Sci.technol, n° 31, p. 2910-2914 (1997).
(2) - FRENZEL (I.), HOLDIK (H.), STAMATIALIS...

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