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Degradation of industrial surfactants by photocatalysis combined with ozonation

Zsilák, Zoltán and Fónagy, Orsolya and Szabó-Bárdos, Erzsébet and Horváth, Ottó and Horváth, Krisztián and Hajós, Péter (2014) Degradation of industrial surfactants by photocatalysis combined with ozonation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 21 (19). pp. 11126-11134. ISSN 0944-1344

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Abstract

The efficiency of titanium dioxide-mediated photocatalytic degradation of pollutants can be enhanced by combination with another advanced oxidation procedure such as ozonation. Mineralization of hydroxy- and dihydroxybenzenesulfonate based on these methods, both individually and combined, was investigated by monitoring the total organic carbon (TOC) content, sulfate concentration, pH, HPLC as well as the absorption spectral changes. The mineralization efficiency of the combined procedure significantly exceeded the sum of those of the individual techniques. The comparison of the disappearance of the starting material and the formation of the sulfate ions indicates that desulfonation is not the primary step of the degradation. Moreover, in the case of the combined method, ring- cleavage, and thus, partial mineralization can occur without desulfonation. Efficient degradation of other, widely used industrial surfactants, such as alkylbenzene sulfonates and alkyl ether sulfates, was also achieved by heterogeneous photocatalysis combined with ozonation, offering an applicable method for the removal of these pollutants.

Item Type: Article
Subjects: Q Science / természettudomány > QD Chemistry / kémia > QD02 Physical chemistry / fizikai kémia
Q Science / természettudomány > QD Chemistry / kémia > QD03 Inorganic chemistry / szervetlen kémia
Depositing User: Prof. Ottó Horváth
Date Deposited: 03 Apr 2017 07:48
Last Modified: 04 Apr 2023 12:39
URI: http://real.mtak.hu/id/eprint/50820

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