Cargando…
Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation
Diazinon (DIZ) and 4-Chloro-2-methylphenoxyacetic acid (MCPA) herbicide and widely used in agricultural lands. Present study investigates diazinon and 4-chloro-2-methylphenoxyacetic acid photo-reduction via UV/Sulfite (US) in as Advanced Reduction Processes (ARP). The ideal pH was Molar ratio of sul...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10590789/ https://www.ncbi.nlm.nih.gov/pubmed/37876429 http://dx.doi.org/10.1016/j.heliyon.2023.e20880 |
_version_ | 1785124068908859392 |
---|---|
author | Azarpira, Hossein Rasolevandi, Tayebeh Mahvi, Amir Hossein |
author_facet | Azarpira, Hossein Rasolevandi, Tayebeh Mahvi, Amir Hossein |
author_sort | Azarpira, Hossein |
collection | PubMed |
description | Diazinon (DIZ) and 4-Chloro-2-methylphenoxyacetic acid (MCPA) herbicide and widely used in agricultural lands. Present study investigates diazinon and 4-chloro-2-methylphenoxyacetic acid photo-reduction via UV/Sulfite (US) in as Advanced Reduction Processes (ARP). The ideal pH was Molar ratio of sulfite: DIZ or MCPA 1:1 and, 20 min reaction time, and pH 9, in which about 100 % reduction of DIZ and MCPA with a concentration of 10 mg L(−1) was achieved and the optimal conditions were considered. Kinetic investigation increasing DIZ and MCPA concentration from 5 to 20 mgL(−1), k(obs) increase about from 0.151 to 0.234 for DIZ and from 0.231 to 0.589 min(−1). Also, reaction rate (r(obs)) increases about from 0.755 to 4.68 for DIZ and from 1.155 to 11.78 mg L(−1).min. The amount of energy consumption in DIZ solution increased from 5 to 20, respectively, from 0.73 to 2.37, and in the reduction of MCPA from 0.47 to 1.49 kWh per cubic meter. According to experiments performed in 30 min with the US process, COD levels were reduced by about 46 % of both pollutants. It is important to note that the BOD/COD ratio rose from about 0.20 to 0.48 after 30 min. Since the index of biodegradability has grown high, it can be concluded that non-biodegradable COD (NBDCOD) convert to biodegradable COD (BDCOD) and toxicity is lower than of before of treatment. This study has been very suggesting that the UV/sulfite method produces effluent with a non-toxic and ecologically beneficial manner by biological treatment or discharge directly in environment. |
format | Online Article Text |
id | pubmed-10590789 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-105907892023-10-24 Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation Azarpira, Hossein Rasolevandi, Tayebeh Mahvi, Amir Hossein Heliyon Research Article Diazinon (DIZ) and 4-Chloro-2-methylphenoxyacetic acid (MCPA) herbicide and widely used in agricultural lands. Present study investigates diazinon and 4-chloro-2-methylphenoxyacetic acid photo-reduction via UV/Sulfite (US) in as Advanced Reduction Processes (ARP). The ideal pH was Molar ratio of sulfite: DIZ or MCPA 1:1 and, 20 min reaction time, and pH 9, in which about 100 % reduction of DIZ and MCPA with a concentration of 10 mg L(−1) was achieved and the optimal conditions were considered. Kinetic investigation increasing DIZ and MCPA concentration from 5 to 20 mgL(−1), k(obs) increase about from 0.151 to 0.234 for DIZ and from 0.231 to 0.589 min(−1). Also, reaction rate (r(obs)) increases about from 0.755 to 4.68 for DIZ and from 1.155 to 11.78 mg L(−1).min. The amount of energy consumption in DIZ solution increased from 5 to 20, respectively, from 0.73 to 2.37, and in the reduction of MCPA from 0.47 to 1.49 kWh per cubic meter. According to experiments performed in 30 min with the US process, COD levels were reduced by about 46 % of both pollutants. It is important to note that the BOD/COD ratio rose from about 0.20 to 0.48 after 30 min. Since the index of biodegradability has grown high, it can be concluded that non-biodegradable COD (NBDCOD) convert to biodegradable COD (BDCOD) and toxicity is lower than of before of treatment. This study has been very suggesting that the UV/sulfite method produces effluent with a non-toxic and ecologically beneficial manner by biological treatment or discharge directly in environment. Elsevier 2023-10-11 /pmc/articles/PMC10590789/ /pubmed/37876429 http://dx.doi.org/10.1016/j.heliyon.2023.e20880 Text en © 2023 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Azarpira, Hossein Rasolevandi, Tayebeh Mahvi, Amir Hossein Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation |
title | Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation |
title_full | Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation |
title_fullStr | Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation |
title_full_unstemmed | Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation |
title_short | Diazinon and MCPA photo-reduction with sulfite excitation under UV irradiation and reducing agents’ generation |
title_sort | diazinon and mcpa photo-reduction with sulfite excitation under uv irradiation and reducing agents’ generation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10590789/ https://www.ncbi.nlm.nih.gov/pubmed/37876429 http://dx.doi.org/10.1016/j.heliyon.2023.e20880 |
work_keys_str_mv | AT azarpirahossein diazinonandmcpaphotoreductionwithsulfiteexcitationunderuvirradiationandreducingagentsgeneration AT rasolevanditayebeh diazinonandmcpaphotoreductionwithsulfiteexcitationunderuvirradiationandreducingagentsgeneration AT mahviamirhossein diazinonandmcpaphotoreductionwithsulfiteexcitationunderuvirradiationandreducingagentsgeneration |