Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process
<p dir="ltr">In this work, the degradation of 4-ethylpyridine (4EP) in water by a heterogeneous photo-Fenton process (H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/ultraviolet irradiation (UV)) was investigated. More rapid and...
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| مؤلفون آخرون: | , |
| منشور في: |
2019
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| _version_ | 1864513525388410880 |
|---|---|
| author | Nasr Bensalah (14778253) |
| author2 | Mohammad I. Ahmad (17115619) Ahmed Bedoui (16488921) |
| author2_role | author author |
| author_facet | Nasr Bensalah (14778253) Mohammad I. Ahmad (17115619) Ahmed Bedoui (16488921) |
| author_role | author |
| dc.creator.none.fl_str_mv | Nasr Bensalah (14778253) Mohammad I. Ahmad (17115619) Ahmed Bedoui (16488921) |
| dc.date.none.fl_str_mv | 2019-11-25T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.3390/app9235073 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Catalytic_Degradation_of_4-Ethylpyridine_in_Water_by_Heterogeneous_Photo-Fenton_Process/25340707 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Fluid mechanics and thermal engineering Materials engineering pyridine derivatives catalyst Fenton oxidation UV irradiation hydroxyl radicals degradation |
| dc.title.none.fl_str_mv | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">In this work, the degradation of 4-ethylpyridine (4EP) in water by a heterogeneous photo-Fenton process (H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/ultraviolet irradiation (UV)) was investigated. More rapid and effective 4EP degradation was obtained with H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/UV than Fenton-like (H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>) and UV/H<sub>2</sub>O<sub>2,</sub> which is due to the larger production of hydroxyl radicals from the chemical and photolytic decomposition of H<sub>2</sub>O<sub>2</sub>. The operational conditions were varied during 4EP degradation experiments to evaluate the effects of pH, catalyst, concentration, and temperature on the kinetics and efficiency of H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/UV oxidation. Under optimal conditions (100 mg/L 4EP, [H<sub>2</sub>O<sub>2</sub>] = 1000 mg/L, Fe<sub>3</sub>O<sub>4</sub> = 40 mg/L, pH = 3 and room temperature, 300 rpm), 4EP was totally declined and more than 93% of the total organic carbon (TOC) was eliminated. Liquid chromatography analysis confirmed the formation of aromatic and aliphatic intermediates (4-hydroxypyridine, 4-pyridone, malonic, oxalic, and formic acids) that resulted in being mineralized. Ion chromatography analysis demonstrated the stoichiometric release of NH4<sup>+</sup> ions during 4EP degradation by heterogeneous photo-Fenton oxidation. The reuse of the heterogeneous catalyst was evaluated after chemical and heat treatment at different temperatures. The heat-treated catalyst at 500 °C presented similar activity than the pristine Fe<sub>3</sub>O<sub>4</sub>. Accordingly, heterogeneous photo-Fenton oxidation can be an alternative method to treat wastewaters and groundwater contaminated with pyridine derivatives and other organic micropollutants. The combination of heterogeneous photo-Fenton oxidation with classical biological methods can be proposed to reduce the overall cost of the treatment in large-scale water treatment plants.</p><p dir="ltr"><br></p><h2>Other Information</h2><p dir="ltr">Published in: Applied Sciences<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/app9235073" target="_blank">https://dx.doi.org/10.3390/app9235073</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_1f5b6ed0edb16438f4e85cc67cfd6fdb |
| identifier_str_mv | 10.3390/app9235073 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/25340707 |
| publishDate | 2019 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton ProcessNasr Bensalah (14778253)Mohammad I. Ahmad (17115619)Ahmed Bedoui (16488921)EngineeringFluid mechanics and thermal engineeringMaterials engineeringpyridine derivativescatalystFenton oxidationUV irradiationhydroxyl radicalsdegradation<p dir="ltr">In this work, the degradation of 4-ethylpyridine (4EP) in water by a heterogeneous photo-Fenton process (H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/ultraviolet irradiation (UV)) was investigated. More rapid and effective 4EP degradation was obtained with H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/UV than Fenton-like (H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>) and UV/H<sub>2</sub>O<sub>2,</sub> which is due to the larger production of hydroxyl radicals from the chemical and photolytic decomposition of H<sub>2</sub>O<sub>2</sub>. The operational conditions were varied during 4EP degradation experiments to evaluate the effects of pH, catalyst, concentration, and temperature on the kinetics and efficiency of H<sub>2</sub>O<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub>/UV oxidation. Under optimal conditions (100 mg/L 4EP, [H<sub>2</sub>O<sub>2</sub>] = 1000 mg/L, Fe<sub>3</sub>O<sub>4</sub> = 40 mg/L, pH = 3 and room temperature, 300 rpm), 4EP was totally declined and more than 93% of the total organic carbon (TOC) was eliminated. Liquid chromatography analysis confirmed the formation of aromatic and aliphatic intermediates (4-hydroxypyridine, 4-pyridone, malonic, oxalic, and formic acids) that resulted in being mineralized. Ion chromatography analysis demonstrated the stoichiometric release of NH4<sup>+</sup> ions during 4EP degradation by heterogeneous photo-Fenton oxidation. The reuse of the heterogeneous catalyst was evaluated after chemical and heat treatment at different temperatures. The heat-treated catalyst at 500 °C presented similar activity than the pristine Fe<sub>3</sub>O<sub>4</sub>. Accordingly, heterogeneous photo-Fenton oxidation can be an alternative method to treat wastewaters and groundwater contaminated with pyridine derivatives and other organic micropollutants. The combination of heterogeneous photo-Fenton oxidation with classical biological methods can be proposed to reduce the overall cost of the treatment in large-scale water treatment plants.</p><p dir="ltr"><br></p><h2>Other Information</h2><p dir="ltr">Published in: Applied Sciences<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/app9235073" target="_blank">https://dx.doi.org/10.3390/app9235073</a></p>2019-11-25T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.3390/app9235073https://figshare.com/articles/journal_contribution/Catalytic_Degradation_of_4-Ethylpyridine_in_Water_by_Heterogeneous_Photo-Fenton_Process/25340707CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/253407072019-11-25T03:00:00Z |
| spellingShingle | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process Nasr Bensalah (14778253) Engineering Fluid mechanics and thermal engineering Materials engineering pyridine derivatives catalyst Fenton oxidation UV irradiation hydroxyl radicals degradation |
| status_str | publishedVersion |
| title | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| title_full | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| title_fullStr | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| title_full_unstemmed | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| title_short | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| title_sort | Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process |
| topic | Engineering Fluid mechanics and thermal engineering Materials engineering pyridine derivatives catalyst Fenton oxidation UV irradiation hydroxyl radicals degradation |