Naslov
Study of structural aspects of degradation of sulfoaromatics in water matrix by UV/H2O2 process

Autori
Peternel, Igor ; Juretić, Daria ; Kusić, Hrvoje ; Kalinski, Ivana ; Lončarić Božić, Ana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts of The 20th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air and Soil / Hussain Al-Ekabi - London : Ontario : Redox Technologies, 2014, 104-104

Skup
International Conference on Advanced Oxidation Technologies for Treatment of Water, Air and Soil (20 ; 2014)

Mjesto i datum
San Diego (CA), Sjedinjene Američke Države, 17.11.2014. - 20.11.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
photooxidation; sulfoaromatics; biodegradability; toxicity

Sažetak
The influence of sulfoaromatics (SulfoArs) structure on photooxidative treatment by UV/H2O2 process was investigated. In that purpose, typical SulfoArs water pollutants ; benzenesulfonic acids with different substituents in para position (-H, -OH, -CH3, -Cl, -NH2) were chosen: BSA, HBSA, TSA, CBSA and ABSA, respectively. Effect of UV/H2O2 process parameters and structural features of SulfoArs on their degradation kinetics was investigated by statistical/empirical approach employing design of experiments and response surface methodology. Different optimal conditions for maximal degradation rates were established. The observed degradation rate constants and reaction rate constants of SulfoArs with hydroxyl radicals follow the different decreasing orders indicating on the competitive kinetics with by- products formed through the structurally influenced degradation pathways. The mineralization kinetics is correlated with the degradation pathways of studied SulfoArs, the shared sequence within, and influence of inorganic ions present in the reaction mixture upon elimination of parent substituents. It was determined that changes of biodegradability and toxicity toward Vibrio fischeri during UV/H2O2 treatment are related to the preferable degradation route including the elimination of parent substituent and subsequent hydroxylation. In the observed treatment period biodegradability was significantly improved in all cases, while the toxicity levels were higher than that of parent pollutants.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA