Naslov
Laboratory Study for thr Fenton and Photo-Fenton Oxidation Treatment of LAS Surfactant Wastewater

Autori
Papić, Sanja ; Koprivanac, Natalija ; Peternel, Igor ; Vujević, Dinko ; Grčić, Ivana

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

Izvornik
Book of Abstracts of 2nd International Symposium on Environmental Management / Koprivanac, Natalija ; Kušić, Hrvoje - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2007

ISBN
978-953-6470-33-4

Skup
2nd International Symposium on Environmental Management

Mjesto i datum
Zagreb, Hrvatska, 12.09.2007. - 14.09.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
wastewater treatment; AOPs; Fenton type processes; UV irradiation

Sažetak
The present study is to investigate the treatment of surfactant wastewater by the advanced oxidation processes of Fenton type. Synthetic solutions of linear alkylbenzene sulfonate (LAS) are treated in the work as this is a model compound commonly used in the formulation of detergents, with great presence in urban and industrial wastewaters. Experiments were conducted at LAS concentration of 100 mg/l. The mineralization of LAS synthetic wastewater has been studied using Fe2+/H2O2, Fe3+/H2O2, Fe2+/H2O2/UV and Fe3+/H2O2/UV processes. The extent of mineralization was followed monitoring total organic carbon concentrations (TOC). Batch experiments for Fenton and photo-Fenton oxidation were performed in water jacked cylindrical reactor of 500 ml capacity. For photo-Fenton oxidation a low pressure mercury lamp (125 W) which emits at 254 nm was used. Experiments were carried out to investigate the processes optimal operational conditions: H2O2 dosage, Fe2+ and Fe3+ dosage, optimal Fe2+/H2O2 and Fe3+/H2O2 ratios. Mineralization rates in all processes were determined. The mineralization of LAS expressed as a percentage of TOC remaining after treatment (TOC/TOC0, %) was: 53 % for Fe2+/H2O2, 51 % for Fe2+/H2O2/UV, 67 % for Fe3+/H2O2, and 48 % for Fe3+/H2O2/UV process with 0, 005 M Fe2+ or Fe3+ dosage and 1 : 20, Fe2+ or Fe3+/ H2O2 molar ratio.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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