Degradation of p-Chloronitrobenzene in Aqueous Solution by Iron Silicate Catalytic Ozonation

Abstract:

Iron silicate, a stable and efficient catalyst prepared in the laboratory has been successfully used as a catalyst combined with ozonation in the degradation of p-Chloronitrobenzene (pCNB). The catalytic ozonation removal effectiveness of pCNB was investigated under various physicochemical conditions. Both the adsorption and the single ozonation were not effective for the degradation of pCNB, but the presence of iron silicate in ozonation process could substantially enhance the pCNB removal efficiency. The hydroxyl radical scavenger experiment confirmed that iron silicate catalytic ozonation followed a radical-type mechanism. The increasing of both the iron silicate dosage and the ozone dosage could enhance the removal effectiveness of pCNB. The iron silicate catalyst could be recycled easily without decreasing any ozone catalytic activity after four successive reuses. It is concluded that the iron silicate was an efficient green catalyst for pCNB degradation in drinking water.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2162-2168
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2162
• Online since: June 2014
• Authors: Yue Liu*, Lei Liu, Wei Jin Gong
• Keywords: Degradation Efficiency, Heterogeneous Catalytic Ozonation, Iron Silicate, Ozonation Alone, Pcnb

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