Determination of the Kinetic Behavior of Diclofenac in Aqueous Solution by UV Light Radiation
Diclofenac (DCF) is one of the most widely used non-steroidal anti-inflammatory drugs worldwide, and several studies have reported adverse effects on the environment, in plants and animals; so, it is classified as an emerging pollutant. There are several alternatives for its removal; however, it is...
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| description | Diclofenac (DCF) is one of the most widely used non-steroidal anti-inflammatory drugs worldwide, and several studies have reported adverse effects on the environment, in plants and animals; so, it is classified as an emerging pollutant. There are several alternatives for its removal; however, it is necessary to study the way in which the DCF is degrading to offer more effective removal techniques, since the traditional ones such as chlorination, activated sludge, and biofiltration offer low removal efficiency (20–40%). This work analyzes the kinetic behavior of the photodegradation of DCF and the thermodynamic parameters of the reaction under UV-C-type light radiation. The results obtained indicate that it presents a first-order kinetic promoted by the increase of the temperature. Also, within the evaluated interval (273 to 308 K), the values of the kinetic coefficient (
k
) range between 0.05 and 0.20 min
−1
and the half-life ranges from 3 to 9 min. The reaction is exothermic and spontaneous and gives way to the formation of approximately 6 byproducts, being two with the greatest presence and stability. This suggests that its decomposition route occurs through the dechlorination of the molecule and originate compounds known as carbazoles that have been detected in previous works. It was also found that this mixture of byproducts remained after the degradation of the drug, which is released to the environment, so it is necessary to extend a study on its properties and its possible environmental impact. |
| doi_str_mv | 10.1007/s11270-019-4274-y |
| format | Article |
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k
) range between 0.05 and 0.20 min
−1
and the half-life ranges from 3 to 9 min. The reaction is exothermic and spontaneous and gives way to the formation of approximately 6 byproducts, being two with the greatest presence and stability. This suggests that its decomposition route occurs through the dechlorination of the molecule and originate compounds known as carbazoles that have been detected in previous works. It was also found that this mixture of byproducts remained after the degradation of the drug, which is released to the environment, so it is necessary to extend a study on its properties and its possible environmental impact.</description><identifier>ISSN: 0049-6979</identifier><identifier>EISSN: 1573-2932</identifier><identifier>DOI: 10.1007/s11270-019-4274-y</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Activated sludge ; Anti-inflammatory agents ; Anti-inflammatory drugs ; Aqueous solutions ; Atmospheric Protection/Air Quality Control/Air Pollution ; Biofilters ; Biofiltration ; By-products ; Byproducts ; Carbazoles ; Chlorination ; Climate Change/Climate Change Impacts ; Dechlorination ; Diclofenac ; Earth and Environmental Science ; Environment ; Environmental effects ; Environmental impact ; Environmental monitoring ; Exothermic reactions ; Half-life ; Hydrogeology ; Inflammation ; Kinetic coefficients ; Nonsteroidal anti-inflammatory drugs ; Photodegradation ; Pollutants ; Radiation ; Radioactive half-life ; Removal ; Sludge ; Soil Science & Conservation ; Stability ; Ultraviolet radiation ; Water Quality/Water Pollution</subject><ispartof>Water, air, and soil pollution, 2019-09, Vol.230 (9), Article 219</ispartof><rights>Springer Nature Switzerland AG 2019</rights><rights>COPYRIGHT 2019 Springer</rights><rights>Water, Air, and Soil Pollution is a copyright of Springer, (2019). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c426t-4a467a835450c56e007f0ec821d7fea79cdeb66c4b5452cf313745994f4c45cb3</citedby><cites>FETCH-LOGICAL-c426t-4a467a835450c56e007f0ec821d7fea79cdeb66c4b5452cf313745994f4c45cb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11270-019-4274-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11270-019-4274-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Becerril, M. E.</creatorcontrib><creatorcontrib>Ramírez-García, J. J.</creatorcontrib><creatorcontrib>Cavazos, N.</creatorcontrib><creatorcontrib>Serrano, A. Ramírez</creatorcontrib><title>Determination of the Kinetic Behavior of Diclofenac in Aqueous Solution by UV Light Radiation</title><title>Water, air, and soil pollution</title><addtitle>Water Air Soil Pollut</addtitle><description>Diclofenac (DCF) is one of the most widely used non-steroidal anti-inflammatory drugs worldwide, and several studies have reported adverse effects on the environment, in plants and animals; so, it is classified as an emerging pollutant. There are several alternatives for its removal; however, it is necessary to study the way in which the DCF is degrading to offer more effective removal techniques, since the traditional ones such as chlorination, activated sludge, and biofiltration offer low removal efficiency (20–40%). This work analyzes the kinetic behavior of the photodegradation of DCF and the thermodynamic parameters of the reaction under UV-C-type light radiation. The results obtained indicate that it presents a first-order kinetic promoted by the increase of the temperature. Also, within the evaluated interval (273 to 308 K), the values of the kinetic coefficient (
k
) range between 0.05 and 0.20 min
−1
and the half-life ranges from 3 to 9 min. The reaction is exothermic and spontaneous and gives way to the formation of approximately 6 byproducts, being two with the greatest presence and stability. This suggests that its decomposition route occurs through the dechlorination of the molecule and originate compounds known as carbazoles that have been detected in previous works. It was also found that this mixture of byproducts remained after the degradation of the drug, which is released to the environment, so it is necessary to extend a study on its properties and its possible environmental impact.</description><subject>Activated sludge</subject><subject>Anti-inflammatory agents</subject><subject>Anti-inflammatory drugs</subject><subject>Aqueous solutions</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Biofilters</subject><subject>Biofiltration</subject><subject>By-products</subject><subject>Byproducts</subject><subject>Carbazoles</subject><subject>Chlorination</subject><subject>Climate Change/Climate Change Impacts</subject><subject>Dechlorination</subject><subject>Diclofenac</subject><subject>Earth and Environmental Science</subject><subject>Environment</subject><subject>Environmental effects</subject><subject>Environmental impact</subject><subject>Environmental monitoring</subject><subject>Exothermic reactions</subject><subject>Half-life</subject><subject>Hydrogeology</subject><subject>Inflammation</subject><subject>Kinetic coefficients</subject><subject>Nonsteroidal anti-inflammatory drugs</subject><subject>Photodegradation</subject><subject>Pollutants</subject><subject>Radiation</subject><subject>Radioactive half-life</subject><subject>Removal</subject><subject>Sludge</subject><subject>Soil Science & Conservation</subject><subject>Stability</subject><subject>Ultraviolet radiation</subject><subject>Water Quality/Water Pollution</subject><issn>0049-6979</issn><issn>1573-2932</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kV1LQyEYxyUKWi8foDuh67PU49Hj5Wq90SDo7S7EucfN2LT0LNi3z7UogtIL4eH3e3z0j9ARJX1KiDzJlDJJKkJVxZnk1WoL9Wgj64qpmm2jHiFcVUJJtYv2cn4hZalW9tDzEDpICx9M52PA0eFuBvjGB-i8xacwM-8-pnV96O08OgjGYh_w4G0JcZnxfZwvP83xCj8-4ZGfzjp8Zyb-s98B2nFmnuHw69xHjxfnD2dX1ej28vpsMKosZ6KruOFCmrZueENsI6A8yBGwLaMT6cBIZScwFsLycSGYdTWtJW-U4o5b3thxvY-ON31fUyyD5U6_xGUK5UrNWEtF25DyD9_U1MxB--Bil4xd-Gz1oFFS1q1golD9P6iyJ7DwNgZwvtR_CXQj2BRzTuD0a_ILk1aaEr0OR2_C0SUcvQ5Hr4rDNk4ubJhC-hn4f-kDPL-QXQ</recordid><startdate>20190901</startdate><enddate>20190901</enddate><creator>Becerril, M. 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E.</au><au>Ramírez-García, J. J.</au><au>Cavazos, N.</au><au>Serrano, A. Ramírez</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of the Kinetic Behavior of Diclofenac in Aqueous Solution by UV Light Radiation</atitle><jtitle>Water, air, and soil pollution</jtitle><stitle>Water Air Soil Pollut</stitle><date>2019-09-01</date><risdate>2019</risdate><volume>230</volume><issue>9</issue><artnum>219</artnum><issn>0049-6979</issn><eissn>1573-2932</eissn><abstract>Diclofenac (DCF) is one of the most widely used non-steroidal anti-inflammatory drugs worldwide, and several studies have reported adverse effects on the environment, in plants and animals; so, it is classified as an emerging pollutant. There are several alternatives for its removal; however, it is necessary to study the way in which the DCF is degrading to offer more effective removal techniques, since the traditional ones such as chlorination, activated sludge, and biofiltration offer low removal efficiency (20–40%). This work analyzes the kinetic behavior of the photodegradation of DCF and the thermodynamic parameters of the reaction under UV-C-type light radiation. The results obtained indicate that it presents a first-order kinetic promoted by the increase of the temperature. Also, within the evaluated interval (273 to 308 K), the values of the kinetic coefficient (
k
) range between 0.05 and 0.20 min
−1
and the half-life ranges from 3 to 9 min. The reaction is exothermic and spontaneous and gives way to the formation of approximately 6 byproducts, being two with the greatest presence and stability. This suggests that its decomposition route occurs through the dechlorination of the molecule and originate compounds known as carbazoles that have been detected in previous works. It was also found that this mixture of byproducts remained after the degradation of the drug, which is released to the environment, so it is necessary to extend a study on its properties and its possible environmental impact.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s11270-019-4274-y</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Water, air, and soil pollution, 2019-09, Vol.230 (9), Article 219 |
| issn | 0049-6979 1573-2932 |
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| subjects | Activated sludge Anti-inflammatory agents Anti-inflammatory drugs Aqueous solutions Atmospheric Protection/Air Quality Control/Air Pollution Biofilters Biofiltration By-products Byproducts Carbazoles Chlorination Climate Change/Climate Change Impacts Dechlorination Diclofenac Earth and Environmental Science Environment Environmental effects Environmental impact Environmental monitoring Exothermic reactions Half-life Hydrogeology Inflammation Kinetic coefficients Nonsteroidal anti-inflammatory drugs Photodegradation Pollutants Radiation Radioactive half-life Removal Sludge Soil Science & Conservation Stability Ultraviolet radiation Water Quality/Water Pollution |
| title | Determination of the Kinetic Behavior of Diclofenac in Aqueous Solution by UV Light Radiation |
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