Abstract
In this study, the treatment of a winery wastewater (WW) by a photo-Fenton process, employing a combination of (S,S)-ethylenediamine-N,N’-disuccinic acid (EDDS) as a quelating agent and hydroxylamine (HA) to accelerate the Fe2+ recovery, was presented for the first time. The aim of this study was to improve the photo-Fenton process under UV-C, UV-A and solar radiation. The results show that under the best operational conditions—pH = 6.0, [Fe2+] = 5.0 mM, [H2O2] = 175 mM, [EDDS] = 1.0 mM, [HA] = 1.0 mM, agitation 350 rpm, time 240 min, temperature 298 K—a chemical oxygen demand (COD) removal of 93.2, 81.6 and 60.6% was achieved for UV-C, solar and UV-A radiation, respectively. EDDS-photo-Fenton is an excellent process for WW treatment.
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