Journal
CATALYSIS TODAY
Volume 328, Issue -, Pages 281-285Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2018.10.051
Keywords
Microcontaminants; Solar photo-Fenton; Polyphenols; Waste valorization
Funding
- Spanish Ministry of Economy and Competitiveness under the TRICERATOPS Project [CTQ2015-69832-C4-1-R]
- Junta de Andalucia (Andalusian Regional Government in Spain) [RNM-1739]
- European Regional Development Fund (ERDF)
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The potential of polyphenols, present in olive mill wastewater (OMW), to act as iron chelators in photo-Fenton reaction without water acidification for the treatment of different microcontaminants in water has been studied. OMW containing 6.3 g/L of phenols has been dosed from 1: 100 to 1: 1500 in water containing 200 mu g/L of terbutryn, chlorfenvinphos, pentachlorophenol and diclofenac. Experiments were performed in compound parabolic collector (CPC) solar pilot plant installed in Plataforma Solar de Almeria using Fe 0.1 mM and H2O2 50 mg L-1. The total irradiated area was 3.08 m(2) and the total volume 39 L. Results indicated that iron was forming a stable complex with components of OMW along different pH values. > 90% degradation of the four microcontaminants was achieved with solar photo-Fenton at circumnetutral pH adding OMW 1: 1200 for keeping iron in solution, allowing to operate a photo-Fenton process without acidifying wastewater. It leads to an alternative to using artificial-synthetic iron-complexing ligands.
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