Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Cyanides and Their Attenuation in Wastewaters Using Green Chemistry

Version 1 : Received: 12 April 2021 / Approved: 13 April 2021 / Online: 13 April 2021 (10:27:45 CEST)

How to cite: Quashie, A. Cyanides and Their Attenuation in Wastewaters Using Green Chemistry. Preprints 2021, 2021040341 (doi: 10.20944/preprints202104.0341.v1). Quashie, A. Cyanides and Their Attenuation in Wastewaters Using Green Chemistry. Preprints 2021, 2021040341 (doi: 10.20944/preprints202104.0341.v1).

Abstract

Cyanides, though naturally occurring, are environmental pollutants when not treated properly. Some methods used to attenuate cyanides in waste waters from industrial processes are based simply on changing the physico-chemical properties of the waste water such as the pH and temperature. The effectiveness of these methods are based on hydrolysis of the cyanide and volatilization of the hydrogen cyanide formed. Another reaction which takes place simultaneously is ultraviolet-catalysed oxidation which converts the cyanide to bicarbonates and carbonates.The changes in the cyanide degradation rate approaches a minimum faster if the cyanide solution is maintained at a higher than ambient constant temperature.

Subject Areas

cyanide attenuation, waste water, light irradiation, green chemistry

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