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Fenton-like photocatalyzed degradation of dibutyl phthalate with goethite and carboxylic acids
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SYSNO ASEP 0574091 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Fenton-like photocatalyzed degradation of dibutyl phthalate with goethite and carboxylic acids Author(s) Hejda, Stanislav (UCHP-M) RID, ORCID, SAI
Buzek, D. (CZ)
Klusoň, Petr (UCHP-M) RID, ORCID, SAI
Bajt, O. (SI)Source Title International Journal of Environmental Science and Technology. - : Springer - ISSN 1735-1472
Roč. 20, č. 10 (2023), s. 11461-11470Number of pages 10 s. Language eng - English Country US - United States Keywords photocatalysis ; goethite ; dibutyl phthalate ; carboxylic acid ; water treatment OECD category Chemical process engineering Method of publishing Open access Institutional support UCHP-M - RVO:67985858 UT WOS 000933176800003 EID SCOPUS 85147913471 DOI 10.1007/s13762-023-04781-4 Annotation Detailed investigation of photocatalyzed degradation of dibutyl phthalate (DBP), an endocrine disrupter, in the presence of α-FeOOH (goethite) and different carboxylic acids is the focus of this study. To get a better insight into the efficiency of the degradation, the influence of different parameters, such as concentration of total Fe and Fe(II), dissolved oxygen, DBP concentration, pH and salinity is investigated. The reaction mechanism consists of several interrelationship steps. The first step is the chemical reaction of carboxylic acid groups of the organic acids with hydroxyl groups of the α-FeOOH and a charge transfer upon illumination generating Fe(II). The second step is the release of Fe(II) into the solution followed by H2O2 oxidation to form highly photoactive hydroxyl complex of iron(III) and ˙OH. Simultaneously, the superoxide radical O2˙− and hydroperoxyl radical is formed in acidic solutions in presence of carboxylic acids as well. This mechanism explains the genesis of different reactive species oxidizing DBP. From the variety of the studied carboxylic acids (oxalic, citric, salicylic, pyruvic, maleic, and fumaric), oxalic acid is the best Fe-ligand for the photoreductive dissolution of goethite. Concentrations of the total amount of Fe and its dissociated forms Fe(II) as well as oxygen and hydroxyl radicals play a fundamental role in efficiency of DBP degradation. The photodegradation of DBP with goethite and the use of suitable carboxylic acids under optimized reaction conditions could be an efficient process for decontamination of polluted waters. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2024 Electronic address https://link.springer.com/article/10.1007/s13762-023-04781-4
Number of the records: 1