Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes
In this work, the degradation of sulfamethoxazole (SMX) and trimethoprim (TMP) via Fenton and Fenton-like processes was evaluated using Mn<sup>2+ </sup>as supporting catalyst in the Fenton reaction. The optimum conditions of degradation were also evaluated. Besides that, the effect of in...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-06-01
|
Series: | Water |
Subjects: | |
Online Access: | https://www.mdpi.com/2073-4441/12/6/1655 |
id |
doaj-11dc5972e9554bb39a583102eebca403 |
---|---|
record_format |
Article |
spelling |
doaj-11dc5972e9554bb39a583102eebca4032020-11-25T02:30:03ZengMDPI AGWater2073-44412020-06-01121655165510.3390/w12061655Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like ProcessesAntover Panazzolo Sarmento0Alisson Carraro Borges1Antonio Teixeira de Matos2Lincoln Lucílio Romualdo3Faculty of Engineering, Federal University of Catalão (UFCAT), Catalão-GO 75.704-020, BrazilDepartment of Agricultural Engineering, Federal University of Viçosa (UFV), Viçosa-MG 36.570-900, BrazilDepartment of Sanitary and Environmental Engineering, Federal University of Minas Gerais (UFMG), Belo Horizonte-MG 31.270-901, BrazilInstitute of Chemistry, Federal University of Catalão (UFCAT), Catalão-GO 75.704-020, BrazilIn this work, the degradation of sulfamethoxazole (SMX) and trimethoprim (TMP) via Fenton and Fenton-like processes was evaluated using Mn<sup>2+ </sup>as supporting catalyst in the Fenton reaction. The optimum conditions of degradation were also evaluated. Besides that, the effect of independent factors pH, [H<sub>2</sub>O<sub>2</sub>], [Fe<sup>2+</sup>], [Mn<sup>2+</sup>] and reaction time (t) on the efficiency of the SMX and TMP degradation were assessed. Box–Behnken was the experimental design adopted, delineating the relative concentration (<i>C/Co</i>) of antibiotics after treatments as response variable. The inferences were conducted using variance analysis, Pareto chart, response surface methodology, and desirability function. Due to the lack of adjustment of the SMX degradation model, there are no more inferences about it. The significant variables (<i>p</i> ≤ 0.05) on TMP degradation were: reaction time quadratic and linear effect, [Fe<sup>2+</sup>] linear effect, [Mn<sup>2+</sup>] linear effect, interaction pH vs. [Mn<sup>2+</sup>]. The Mn<sup>2+ </sup>addition aided TMP degradation in environments with lower pH values. However, the addition may harm the efficiency of the antibiotic degradation at higher pH. The optimum condition for TMP degradation in the conventional process (without the addition of Mn<sup>2+</sup>) is: pH 5, [H<sub>2</sub>O<sub>2</sub>] equal to 4.41 mmol L<sup>−1</sup>, [Fe<sup>2+</sup>] equal to 0.81 mmol L<sup>−1</sup> and 90 min reaction time.https://www.mdpi.com/2073-4441/12/6/1655sulfamethoxazoletrimethoprimadvanced oxidation processFenton reaction |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Antover Panazzolo Sarmento Alisson Carraro Borges Antonio Teixeira de Matos Lincoln Lucílio Romualdo |
spellingShingle |
Antover Panazzolo Sarmento Alisson Carraro Borges Antonio Teixeira de Matos Lincoln Lucílio Romualdo Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes Water sulfamethoxazole trimethoprim advanced oxidation process Fenton reaction |
author_facet |
Antover Panazzolo Sarmento Alisson Carraro Borges Antonio Teixeira de Matos Lincoln Lucílio Romualdo |
author_sort |
Antover Panazzolo Sarmento |
title |
Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes |
title_short |
Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes |
title_full |
Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes |
title_fullStr |
Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes |
title_full_unstemmed |
Sulfamethoxazole and Trimethoprim Degradation by Fenton and Fenton-Like Processes |
title_sort |
sulfamethoxazole and trimethoprim degradation by fenton and fenton-like processes |
publisher |
MDPI AG |
series |
Water |
issn |
2073-4441 |
publishDate |
2020-06-01 |
description |
In this work, the degradation of sulfamethoxazole (SMX) and trimethoprim (TMP) via Fenton and Fenton-like processes was evaluated using Mn<sup>2+ </sup>as supporting catalyst in the Fenton reaction. The optimum conditions of degradation were also evaluated. Besides that, the effect of independent factors pH, [H<sub>2</sub>O<sub>2</sub>], [Fe<sup>2+</sup>], [Mn<sup>2+</sup>] and reaction time (t) on the efficiency of the SMX and TMP degradation were assessed. Box–Behnken was the experimental design adopted, delineating the relative concentration (<i>C/Co</i>) of antibiotics after treatments as response variable. The inferences were conducted using variance analysis, Pareto chart, response surface methodology, and desirability function. Due to the lack of adjustment of the SMX degradation model, there are no more inferences about it. The significant variables (<i>p</i> ≤ 0.05) on TMP degradation were: reaction time quadratic and linear effect, [Fe<sup>2+</sup>] linear effect, [Mn<sup>2+</sup>] linear effect, interaction pH vs. [Mn<sup>2+</sup>]. The Mn<sup>2+ </sup>addition aided TMP degradation in environments with lower pH values. However, the addition may harm the efficiency of the antibiotic degradation at higher pH. The optimum condition for TMP degradation in the conventional process (without the addition of Mn<sup>2+</sup>) is: pH 5, [H<sub>2</sub>O<sub>2</sub>] equal to 4.41 mmol L<sup>−1</sup>, [Fe<sup>2+</sup>] equal to 0.81 mmol L<sup>−1</sup> and 90 min reaction time. |
topic |
sulfamethoxazole trimethoprim advanced oxidation process Fenton reaction |
url |
https://www.mdpi.com/2073-4441/12/6/1655 |
work_keys_str_mv |
AT antoverpanazzolosarmento sulfamethoxazoleandtrimethoprimdegradationbyfentonandfentonlikeprocesses AT alissoncarraroborges sulfamethoxazoleandtrimethoprimdegradationbyfentonandfentonlikeprocesses AT antonioteixeiradematos sulfamethoxazoleandtrimethoprimdegradationbyfentonandfentonlikeprocesses AT lincolnlucilioromualdo sulfamethoxazoleandtrimethoprimdegradationbyfentonandfentonlikeprocesses |
_version_ |
1724830313278865408 |