| Title: | Fenton-like photocatalyzed degradation of dibutyl phthalate with goethite and carboxylic acids |
|---|
| Authors: | Authors are not mentioned. |
|---|
| Files: |  PDF - Presentation file, download (1,42 MB)
MD5: 9CB93E267757D1CB3D4F52B8B230B427
 URL - Source URL, visit https://doi.org/10.1007/s13762-023-04781-4
|
|---|
| Language: | Slovenian |
|---|
| Organization: |  NIB - National Institute of Biology
|
|---|
| Abstract: | 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.
|
|---|
| Publication status: | Published |
|---|
| Publication version: | Version of Record |
|---|
| Publication date: | 13.02.2023 |
|---|
| PID: | 20.500.12556/DiRROS-19952  |
|---|
| Publication date in DiRROS: | 30.07.2024 |
|---|
| Views: | 10 |
|---|
| Downloads: | 5 |
|---|
| Metadata: |     |
|---|
|
:
|
Copy citation |
|---|
| | | | Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
