Naslov
Diclofenac removal by zeolite-assisted AOPs

Autori
Merzel, Fran ; Juretić, Daria ; Novak, Mirjana ; Kušić, Hrvoje ; Ukić, , Šime ; Bolanča, Tomislav ; Lavrenčič Štangar, Urška ; Loncaric Bozic, 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 / H - London : Ontario : Redox Technologies, 2014, 118-118

Skup
The 20th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air and Soil

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

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
water treatment; advaced oxidation process; diclofenac; zeolite

Sažetak
The list of priority substances in the field of water policy, i.e. the chemicals identified among those presenting a significant risk to or via the aquatic environment, is periodically amended ; current Directive 2013/39/EC included pharmaceutical Diclofenac (DCF) in the “watch” list. DCF is a common non-steroidal anti- inflammatory drug and one of the most widely available drugs in the world that showed adverse effects in different organisms even at very low concentrations. Due to the fact that conventional wastewater treatment systems do not efficiently remove DCF, advanced treatment technologies capable of its complete removal or destruction of its biological activity, need to be evaluated and eventually employed. The goal of the study was to evaluate capability of zeolite-assisted advanced oxidation processes (AOPs) for the removal of DCF. For that purpose, heterogeneous Fenton process employing Fe- exchanged ZSM5 zeolite (Fe-ZSM5/H2O2) is applied. The applied zeolite-based catalyst is characterized prior and after the treatment in order to scan possible changes in its composition and morphology using ICP/MS, SEM and FTIR. The influence of key operating parameters of applied Fe-ZSM5/H2O2 process (operating pH, oxidant and catalyst concentrations) was investigated using the combination of Box-Behnken experimental design with response surface methodology (RSM). Besides, the effectiveness of Fe-ZSM5/H2O2 was compared with its analogous process, Fe3+/NH4ZSM5/H2O2, in order to investigated removal/degradation mechanisms occurring within the applied system. The operating conditions yielding the highest mineralization degree, and highest stability regarding Fe leaching were determined. The kinetics of Fe-ZSM5/H2O2 process for removal of DCF at determined optimal conditions and its reuse capability were studied as well.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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