Electrodegradation of Selected Water Contaminants: Efficacy and Transformation Products
Source abstract
Abstract
The electrooxidation (EO) of three important environmental contaminants, anticorrosive 1H-benzotriazole (BTA), plasticizer dibutyl phthalate (DBP), and non-ionic surfactant Triton X-100 (tert-octylphenoxy[poly(ethoxy)] ethanol, t-OPPE), was studied as a possible means to improve their elimination from wastewaters, which are an important emission source. EO was performed in a batch reactor with a boron-doped diamond (BDD) anode and a stainless steel cathode. Different supporting electrolytes were tested: NaCl, H2SO4, and Na2SO4. Results were analysed from the point of their efficacy in terms of degradation rate, kinetics, energy consumption, and transformation products. The highest degradation rate, shortest half-life, and lowest energy consumption was observed in the electrolyte H2SO4, followed by Na2SO4 with only slightly less favourable characteristics. In both cases, degradation was probably due to the formation of persulphate or sulphate radicals. Transformation products (TPs) were studied mainly in the sulphate media and several oxidation products were identified with all three contaminants, while some evidence of progressive degradation, e.g., ring-opening products, was observed only with t-OPPE. The possible reasons for the lack of further degradation in BTA and DBP are too short of an EO treatment time and perhaps a lack of detection due to unsuitable analytical methods for more polar TPs. Results demonstrate that BDD-based EO is a robust method for the efficient removal of structurally diverse organic contaminants, making it a promising candidate for advanced water treatment technologies.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced oxidation water treatment · Advanced Photocatalysis Techniques · Environmental remediation with nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Technology, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina
Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000 Ljubljana, Slovenia
Funding
Ministry of Civil Affairs of Bosnia and Herzegovina · Ministry of Scientific and Technological Development and Higher Education, Government of the Republic of Srpska · Slovenian Research and Innovation Agency · Centre for Research Infrastructure at the University of Ljubljana, Faculty of Chemistry and Chemical Technology
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