Optimization of the electro-Fenton and solar photoelectro-Fenton treatments of sulfanilic acid solutions using a pre-pilot flow plant by response surface methodology

Journal of Hazardous Materials
Abdellatif El-GhenymyBen Ali Abdelouahid

Abstract

A central composite rotatable design and response surface methodology were used to optimize the experimental variables of the electro-Fenton (EF) and solar photoelectro-Fenton (SPEF) degradations of 2.5L of sulfanilic acid solutions in 0.05M Na(2)SO(4). Electrolyses were performed with a pre-pilot flow plant containing a Pt/air diffusion reactor generating H(2)O(2). In SPEF, it was coupled with a solar photoreactor under an UV irradiation intensity of ca. 31Wm(-2). Optimum variables of 100mAcm(-2), 0.5mM Fe(2+) and pH 4.0 were determined after 240min of EF and 120min of SPEF. Under these conditions, EF gave 47% of mineralization, whereas SPEF was much more powerful yielding 76% mineralization with 275kWh kg(-1) total organic carbon (TOC) energy consumption and 52% current efficiency. Sulfanilic acid decayed at similar rate in both treatments following a pseudo-first-order kinetics. The final solution treated by EF contained a stable mixture of tartaric, acetic, oxalic and oxamic acids, which form Fe(III) complexes that are not attacked by hydroxyl radicals formed from H(2)O(2) and added Fe(2+). The quick photolysis of these complexes by UV light of sunlight explains the higher oxidation power of SPEF. NH(4)(+) was the main inor...Continue Reading

References

Oct 22, 2004·Applied Biochemistry and Biotechnology·Natalia YemashovaSergey Kalyuzhnyi
Apr 17, 2007·Water Research·Lanhua HuTimothy J Strathmann
Oct 16, 2007·Journal of Hazardous Materials·Ali OzcanMehmet A Oturan
Jan 26, 2008·Angewandte Chemie·Carlos A Martínez-Huitle, Enric Brillas
Sep 2, 2008·Talanta·Marcos Almeida BezerraLuciane Amélia Escaleira
Nov 11, 2008·Water Research·Marco Panizza, Giacomo Cerisola
May 9, 2009·Journal of Hazardous Materials·Yan-Qing WangZhen-Peng Zhang
Jun 16, 2009·Journal of Hazardous Materials·Ivana GrcićNatalija Koprivanac
Aug 8, 2009·Chemical Reviews·Marco Panizza, Giacomo Cerisola
Nov 17, 2009·Bioresource Technology·Jurate VirkutyteVeeriah Jegatheesan
Nov 20, 2009·Water Science and Technology : a Journal of the International Association on Water Pollution Research·D MarciochaJ Surmacz-Górska
Dec 22, 2009·Journal of Hazardous Materials·Soraya MohajeriMohd Nordin Adlan
Jan 26, 2010·Journal of Hazardous Materials·Oscar RozasHéctor D Mansilla

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Citations

Sep 8, 2015·Journal of Environmental Management·Tânia F C V SilvaVítor J P Vilar
Sep 27, 2014·TheScientificWorldJournal·Anam AsgharWan Mohd Ashri Wan Daud
Jan 29, 2017·Environmental Pollution·Reza Davarnejad, Samaneh Nasiri
Jul 14, 2020·Environmental Technology·Guangcai MengJinfeng Bai
Jan 18, 2021·Revista Argentina de microbiología·Florencia RuscassoSebastián Cavalitto
Jan 21, 2015·Environmental Science & Technology·Guandao GaoChad D Vecitis

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