EDDS as complexing agent for enhancing solar advanced oxidation processes in natural water: Effect of iron species and different oxidants
| Autor: | Lorena Cornejo-Ponce, S. Miralles-Cuevas, Ana Ruiz-Delgado, Alejandro Cabrera-Reina, Isabel Oller, Sixto Malato |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
021110 strategic
defence & security studies Environmental Engineering Chemistry business.industry Health Toxicology and Mutagenesis Natural water 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Solar energy Persulfate 01 natural sciences Pollution chemistry.chemical_compound EDDS Pilot plant Oxidizing agent Environmental Chemistry Degradation (geology) Chelation business Waste Management and Disposal 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Journal of Hazardous Materials. 372:129-136 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2018.03.018 |
| Popis: | The main purpose of this pilot plant study was to compare degradation of five microcontaminants (MCs) (antipyrine, carbamazepine, caffeine, ciprofloxacin and sulfamethoxazole at 100 μg/L) by solar photo-Fenton mediated by EDDS and solar/Fe:EDDS/S2O82−. The effects of the Fe:EDDS ratio (1:1 and 1:2), initial iron species (Fe(II) or Fe(III) at 0.1 mM) and oxidizing agent (S2O82− or H2O2 at 0.25–1.5 mM) were evaluated. The higher the S2O82− concentration, the faster MC degradation was, with S2O82− consumption always below 0.6 mM and similar degradation rates with Fe(II) and Fe(III). Under the best conditions (Fe 0.1 mM, Fe:EDDS 1:1, S2O82− 1 mM) antipyrine, carbamazepine, caffeine, ciprofloxacin and sulfamethoxazole at 100 μg/L where 90% eliminated applying a solar energy of 2 kJ/L (13 min at 30 W/m2 solar radiation |
| Databáze: | OpenAIRE |
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