Impact of ultrasound application on oxidative desulphurization of diesel fuel and on treatment of resulting wastewater (CROSBI ID 221450)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Margeta, Dunja ; Grčić, Ivana ; Papić, Sanja ; Sertić- Bionda, Katica ; Foglar, Lucija
engleski
Impact of ultrasound application on oxidative desulphurization of diesel fuel and on treatment of resulting wastewater
The ultrasound-assisted oxidative desulphurization (UAOD) process of diesel fuel has gained growing attention due to the strict regulation of sulphur content in the fuel. The goal of the present study was to investigate the impact of ultrasound (US) application for oxidative desulphurization (ODS) of hydrocarbon fuels and for the subsequent treatment of produced wastewater, since sonochemical processes are a new and interesting area of research with wide application in the field of environmental engineering. For that purpose, the model diesel fuel with initial sulphur concentration of 1220– 3976 mg l−1 was used for ODS and UAOD tests, and hydrogen peroxide/acetic acid was applied as the oxidant/catalyst system, respectively. The comparison of the process performance revealed that US significantly reduced the oxidation reaction time. The conversions of dibenzothiophene during 30 min of ODS and UAOD tests were 36% and 87%, respectively. Moreover, subsequent extraction with acetonitrile resulted in the final sulphur removal of 96.5%. The obtained results clearly indicated that UAOD process is beneficial for effective sulphur removal from the model diesel fuel. Furthermore, subsequent experiments included the application of the sono-Fenton process for resulting wastewater treatment. Monitoring of dibenzothiophene sulphone concentration and total organic carbon during the sono-Fenton treatment of wastewater revealed the decrease of 70–75% and 53–66%, respectively. The hypothesis on the possibility of degradation of dibenzothiophene sulphone by •OH radicals was confirmed by observed generation of benzoic acid and aliphatic carboxylic acids during experiments. Accordingly, the wastewater was purified to a satisfactory degree, enabling the reuse of treated water.
ultrasound-assisted oxidative desulphurization ; Fenton process ; Sono-Fenton process ; dibenzothiophene ; wastewater
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Podaci o izdanju
37 (6)
2016.
293-299
objavljeno
0959-3330
1479-487X
10.1080/09593330.2015.1068870
Povezanost rada
Interdisciplinarne tehničke znanosti, Kemija, Kemijsko inženjerstvo