Photoperoxidation of nitrobenzene in aqueous phase

Abstract

Photochemical processes provide an attractive alternative to the conventional waste water treatment technologies. This paper summarizes studies on nitrobenzene photooxidation with a 125 W medium pressure UV lamp, using H₂O₂, as oxidant. The experiments are performed in an annular type photochemical, reactor or IL capacity. The rate and extent nitrobenzene destruction is assessed using various concentrations of H₂O₂. It is estimated that complete destruction of nitrobenzene can be achieved in 40 min at a H₂O₂ dose of 4.41× <span style="font-family:Symbol;mso-ascii-font-family:" times="" new="" roman";="" mso-hansi-font-family:"times="" roman";mso-char-type:symbol;mso-symbol-font-family:="" symbol"=""> 10^-5mM/ L. Total Organic Carbon (TOC) and Total bound nitrogen (TN_b) are also removed to an extent of 90 and 40% respectively after 1 h of UV exposure indicating photoperoxidation as a potential technique to decontaminate nitrobenzene in aqueous phase.

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