Highly effective degradation of selected groups of organic compounds by cavitation based AOPs under basic pH conditions

Michał Gągol; Andrzej Przyjazny; Grzegorz Boczkaj

doi:10.1016/j.ultsonch.2018.03.013

Highly effective degradation of selected groups of organic compounds by cavitation based AOPs under basic pH conditions

Abstract

Cavitation has become on the most often applied methods in a number of industrial technologies. In the case of oxidation of organic pollutants occurring in the aqueous medium, cavitation forms the basis of numerous advanced oxidation processes (AOPs). This paper presents the results of investigations on the efficiency of oxidation of the following groups of organic compounds: organosulfur, nitro derivatives of benzene, BTEX, and phenol and its derivatives in a basic model effluent using hydrodynamic and acoustic cavitation combined with external oxidants, i.e., hydrogen peroxide, ozone and peroxone. The studies revealed that the combination of cavitation with additional oxidants allows 100% oxidation of the investigated model compounds. However, individual treatments differed with respect to the rate of degradation. Hydrodynamic cavitation aided by peroxone was found to be the most effective treatment (100% oxidation of all the investigated compounds in 60 min). When using hydrodynamic and acoustic cavitation alone, the effectiveness of oxidation was diversified. Under these conditions, nitro derivatives of benzene and phenol and its derivatives were found to be resistant to oxidation. In addition, hydrodynamic cavitation was found to be more effective in degradation of model compounds than acoustic cavitation. The results of investigations presented in this paper compare favorably with the investigations on degradation of organic contaminants using AOPs under conditions of basic pH published thus far.

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Authors (3)

Michał Gągol dr inż.
Andrzej Przyjazny prof.
- Kettering University, USA Department of Chemistry & Biochemistry
Grzegorz Boczkaj dr hab. inż.

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: ULTRASONICS SONOCHEMISTRY no. 45, pages 257 - 266,
ISSN: 1350-4177
Language:: English
Publication year:: 2018
Bibliographic description:: Gągol M., Przyjazny A., Boczkaj G.: Highly effective degradation of selected groups of organic compounds by cavitation based AOPs under basic pH conditions// ULTRASONICS SONOCHEMISTRY. -Vol. 45, (2018), s.257-266
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.ultsonch.2018.03.013
Verified by:: Gdańsk University of Technology