Chemometric study on the electrochemical incineration of diethylenetriaminepentaacetic acid using boron-doped diamond anode
| Autor: | Chunyong Zhang, Min Liu, Wei Chen, Jiahui Xian, Degang Fu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
Materials science Health Toxicology and Mutagenesis Composite number Analytical chemistry Incineration 02 engineering and technology 010501 environmental sciences engineering.material Electrochemistry 01 natural sciences Mineralization (biology) chemistry.chemical_compound Environmental Chemistry Sulfate Electrodes Boron 0105 earth and related environmental sciences Sulfates Public Health Environmental and Occupational Health Diamond Electrochemical Techniques General Medicine General Chemistry Models Theoretical Pentetic Acid 021001 nanoscience & nanotechnology Pollution Volumetric flow rate Anode chemistry engineering Degradation (geology) 0210 nano-technology Oxidation-Reduction Water Pollutants Chemical |
| Zdroj: | Chemosphere. 198:257-265 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2018.01.147 |
| Popis: | The electrochemical incineration of diethylenetriaminepentaacetic acid (DTPA) with boron-doped diamond (BDD) anode had been initially performed under galvanostatic conditions. The main and interaction effects of four operating parameters (flow rate, applied current density, sulfate concentration and initial DTPA concentration) on mineralization performance were investigated. Under similar experimental conditions, Doehlert matrix (DM) and central composite rotatable design (CCRD) were used as statistical multivariate methods in the optimization of the anodic oxidation processes. A comparison between DM model and CCRD model revealed that the former was more accurate, possibly due to its higher operating level numbers employed (7 levels for two variables). Despite this, these two models resulted in quite similar optimum operating conditions. The maximum TOC removal percentages at 180 min were 76.2% and 73.8% for case of DM and CCRD, respectively. In addition, with the aid of quantum chemistry calculation and LC/MS analysis, a plausible degradation sequence of DTPA on BDD anode was also proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect