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Rapid removal of nitrobenzene in a three-phase ozone loaded system with gas-liquid-liquid

Chemical Engineering Communications

By:
, , , , ,
DOI: 10.1080/00986445.2013.867259

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Abstract

This study explores the removal rate of nitrobenzene (NB) using a new gas-liquid-liquid (G-L-L) three-phase ozone loaded system consisting of a gaseous ozone, an aqueous solvent phase, and a fluorinated solvent phase (perfluorodecalin, or FDC). The removal rate of NB was quantified in relation to six factors including 1) initial pH, 2) initial NB dosage, 3) gaseous ozone dosage, 4) free radical scavenger, 5) FDC pre-aerated gaseous ozone, and 6) reuse of FDC. The NB removal rate is positively affected by the first three factors. Compared with the conventional gas-liquid (water) (G-L) two-phase ozonation system, the free radical scavenger (tertiary butyl alcohol) has much less influence on the removal rate of NB in the G-L-L system. The FDC loaded ozone acts as an ozone reservoir and serves as the main reactive phase in the G-L-L three-phase system. The reuse of FDC has little influence on the removal rate of NB. These experimental results suggest that the oxidation efficiency of ozonation in the G-L-L three-phase system is better than that in the conventional G-L two-phase system.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Rapid removal of nitrobenzene in a three-phase ozone loaded system with gas-liquid-liquid
Series title:
Chemical Engineering Communications
DOI:
10.1080/00986445.2013.867259
Edition:
Online First
Year Published:
2014
Language:
English
Publisher:
Taylor & Francis
Contributing office(s):
National Research Program - Western Branch
Larger Work Type:
Article
Larger Work Subtype:
Journal Article