| Full text | |
| Author(s): |
Medeiros de Araujo, Danyelle
[1]
;
Dos Santos, Elisama V.
[1, 2]
;
Martinez-Huitle, Carlos A.
[1, 2]
;
De Battisti, Achille
[3]
Total Authors: 4
|
| Affiliation: | [1] Univ Fed Rio Grande do Norte, Lab Eletroquim Ambiental & Aplicada, Inst Quim, BR-59072900 Natal, RN - Brazil
[2] Univ Estadual Paulista, Natl Inst Alternat Technol Detect Toxicol Evaluat, Inst Chem, POB 355, BR-14800900 Araraquara, SP - Brazil
[3] Univ Ferrara, Dept Chem, Via Luigi Borsari 46, I-44121 Ferrara - Italy
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | APPLIED SCIENCES-BASEL; v. 12, n. 2 JAN 2022. |
| Web of Science Citations: | 0 |
| Abstract | |
Hydroxychloroquine (HCQ) has been extensively consumed due to the Coronavirus (COVID-19) pandemic. Therefore, it is increasingly found in different water matrices. For this reason, the concentration of HCQ in water should be monitored and the treatment of contaminated water matrices with HCQ is a key issue to overcome immediately. Thus, in this study, the development of technologies and smart water solutions to reach the Sustainable Development Goal 6 (SDG6) is the main objective. To do that, the integration of electrochemical technologies for their environmental application on HCQ detection, quantification and degradation was performed. Firstly, an electrochemical cork-graphite sensor was prepared to identify/quantify HCQ in river water matrices by differential pulse voltammetric (DPV) method. Subsequently, an HCQ-polluted river water sample was electrochemically treated with BDD electrode by applying 15, 30 and 45 mA cm(-2). The HCQ decay and organic matter removal was monitored by DPV with composite sensor and chemical oxygen demand (COD) measurements, respectively. Results clearly confirmed that, on the one hand, the cork-graphite sensor exhibited good current response to quantify of HCQ in the river water matrix, with limit of detection and quantification of 1.46 mg L-1 (approximate to 3.36 mu M) and 4.42 mg L-1 (approximate to 10.19 mu M), respectively. On the other hand, the electrochemical oxidation (EO) efficiently removed HCQ from real river water sample using BDD electrodes. Complete HCQ removal was achieved at all applied current densities; whereas in terms of COD, significant removals (68%, 71% and 84% at 15, 30 and 45 mA cm(-2), respectively) were achieved. Based on the achieved results, the offline integration of electrochemical SDG6 technologies in order to monitor and remove HCQ is an efficient and effective strategy. (AU) | |
| FAPESP's process: | 19/13113-4 - Photo (electro) catalysis and photoelectro-fenton processes for emerging contaminants removal from industrial wastewater |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Research Projects - Thematic Grants |