Using Hybrid Coupling Processes for the Treatment of Waste Containing Halosulfuron‐Methyl Herbicide
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2022-05-12 |
| Journal | ChemElectroChem |
| Authors | F.L. Souza, José J. Linares, N.G. Ferreira, Marcos R.V. Lanza |
| Institutions | Universidade de Brasília, National Institute for Space Research |
| Citations | 2 |
Abstract
Section titled “Abstract”Abstract This work aims to demonstrate the importance of coupling different degradation processes for the removal of the commercial herbicide Halosulfuron‐Methyl (HSM). Using anode oxidation (AO) on boron‐doped diamond as the base process; cathodically produced H 2 O 2 (AO/H 2 O 2 ), UV light (AO/UV), AO/UV/H 2 O 2 , electro‐Fenton and photoelectron Fenton (PEF) are employed as hybrid processes for HSM degradation. All hybrid processes employed in the study exhibited synergism with AO, and the UV‐irradiated processes presented an outstanding performance. In particular, the AO/UV/H 2 O 2 process exhibited 90 % mineralization after 3 h of treatment, whereas the PEF process exhibited a complete removal of HSM after 45 min of treatment. In addition to the noticeable advantages of hybridization, the application of higher current densities is found to accelerate the degradation/mineralization of the compound of interest, although the process tends to be more energy demanding. In such a case, the use of a hybrid treatment process coupled to UV‐irradiation allows one to mitigate this constraint while contributing toward obtaining higher mineralization degrees. The degradation/mineralization of more concentrated solutions is, however, found to occur more sluggishly under the treatment mechanisms investigated here, requiring longer times, although the process is noticeably more efficient in photo‐irradiated processes, which recorded current efficiencies of above 100 %.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2017 - Opinion Proposing Harmonised Classification and Labelling at EU Level of Halosulfuron-Methyl