Adsorption of herbicide 2,4-D from aqueous solution using organo-modified bentonite clay
This study analyzed the performance of organophilic clays obtained from the chemical modification of sodium bentonite clay when applied to the adsorption of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Kinetic curves and equilibrium isotherms were obtained in order to determine time and adsorpt...
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| Veröffentlicht in: | Environmental science and pollution research international 2019-06, Vol.26 (18), p.18329-18342 |
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| description | This study analyzed the performance of organophilic clays obtained from the chemical modification of sodium bentonite clay when applied to the adsorption of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Kinetic curves and equilibrium isotherms were obtained in order to determine time and adsorption capacity of the material, as well as understand the mechanisms involved in this phenomenon. The results showed that the most predictive kinetic model for experimental data was of pseudo-second order (R
2
> 0.98), and that external mass transfer is the dominant factor in the time of operation. Isotherms were obtained at temperatures of 298, 308, and 318 K, under which the Dubinin-Radushkevich model was shown to have a good fit to data (R
2
> 0.96), according to mathematical adjustments. The maximum adsorption capacity obtained experimentally was 50.36 mg g
−1
, found at a temperature of 298 K, being higher or compatible with other materials reported in the literature. With help of the thermodynamic studies on the process, it was observed that the adsorption of 2,4-D in organophilic clays refers to a spontaneous (ΔG°
ads
|
| doi_str_mv | 10.1007/s11356-019-05196-w |
| format | Article |
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2
> 0.98), and that external mass transfer is the dominant factor in the time of operation. Isotherms were obtained at temperatures of 298, 308, and 318 K, under which the Dubinin-Radushkevich model was shown to have a good fit to data (R
2
> 0.96), according to mathematical adjustments. The maximum adsorption capacity obtained experimentally was 50.36 mg g
−1
, found at a temperature of 298 K, being higher or compatible with other materials reported in the literature. With help of the thermodynamic studies on the process, it was observed that the adsorption of 2,4-D in organophilic clays refers to a spontaneous (ΔG°
ads
< 0), exothermal (ΔH°
ads
= − 9.99 kJ mol
−1
) process of physical nature. Lastly, it was observed that the adsorbent can be easily regenerated when subjected to eluents such as mixtures containing fractions of ethanol/water (desorption = 95%).</description><identifier>ISSN: 0944-1344</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-019-05196-w</identifier><identifier>PMID: 31041700</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>2,4-D ; Adsorption ; Aquatic Pollution ; Aqueous solutions ; Atmospheric Protection/Air Quality Control/Air Pollution ; Bentonite ; Chemical modification ; Clay ; Dichlorophenoxyacetic acid ; Earth and Environmental Science ; Ecotoxicology ; Eluents ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental science ; Ethanol ; Herbicides ; Isotherms ; Mass transfer ; Organic chemistry ; Research Article ; Sodium ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Environmental science and pollution research international, 2019-06, Vol.26 (18), p.18329-18342</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2019</rights><rights>Environmental Science and Pollution Research is a copyright of Springer, (2019). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c412t-ef280afad8f937f4c6a435e76d53acbde5264632de5e9584ad2768f16a74ee493</citedby><cites>FETCH-LOGICAL-c412t-ef280afad8f937f4c6a435e76d53acbde5264632de5e9584ad2768f16a74ee493</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/s11356-019-05196-w$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-019-05196-w$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,41493,42562,51324</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31041700$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>de Souza, Fernando Manzotti</creatorcontrib><creatorcontrib>dos Santos, Onélia Aparecida Andreo</creatorcontrib><creatorcontrib>Vieira, Melissa Gurgel Adeodato</creatorcontrib><title>Adsorption of herbicide 2,4-D from aqueous solution using organo-modified bentonite clay</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>This study analyzed the performance of organophilic clays obtained from the chemical modification of sodium bentonite clay when applied to the adsorption of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Kinetic curves and equilibrium isotherms were obtained in order to determine time and adsorption capacity of the material, as well as understand the mechanisms involved in this phenomenon. The results showed that the most predictive kinetic model for experimental data was of pseudo-second order (R
2
> 0.98), and that external mass transfer is the dominant factor in the time of operation. Isotherms were obtained at temperatures of 298, 308, and 318 K, under which the Dubinin-Radushkevich model was shown to have a good fit to data (R
2
> 0.96), according to mathematical adjustments. The maximum adsorption capacity obtained experimentally was 50.36 mg g
−1
, found at a temperature of 298 K, being higher or compatible with other materials reported in the literature. With help of the thermodynamic studies on the process, it was observed that the adsorption of 2,4-D in organophilic clays refers to a spontaneous (ΔG°
ads
< 0), exothermal (ΔH°
ads
= − 9.99 kJ mol
−1
) process of physical nature. Lastly, it was observed that the adsorbent can be easily regenerated when subjected to eluents such as mixtures containing fractions of ethanol/water (desorption = 95%).</description><subject>2,4-D</subject><subject>Adsorption</subject><subject>Aquatic Pollution</subject><subject>Aqueous solutions</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Bentonite</subject><subject>Chemical modification</subject><subject>Clay</subject><subject>Dichlorophenoxyacetic acid</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Eluents</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>Environmental science</subject><subject>Ethanol</subject><subject>Herbicides</subject><subject>Isotherms</subject><subject>Mass transfer</subject><subject>Organic chemistry</subject><subject>Research Article</subject><subject>Sodium</subject><subject>Waste Water Technology</subject><subject>Water Management</subject><subject>Water Pollution Control</subject><issn>0944-1344</issn><issn>1614-7499</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>eNp9kE1rFTEUhoMo9lr9Ay4k4MaF0XycSSbLUr8KhW4quAu5k5NryszkmsxQ-u-b21sVXLjKgTznPS8PIa8F_yA4Nx-rEKrTjAvLeCesZrdPyEZoAcyAtU_JhlsAJhTACXlR6w3nkltpnpMTJTgIw_mG_DgLNZf9kvJMc6Q_sWzTkAJS-R7YJxpLnqj_tWJeK615XB_AtaZ5R3PZ-TmzKYcUEwa6xXnJc1qQDqO_e0meRT9WfPX4npLvXz5fn39jl1dfL87PLtkAQi4Mo-y5jz700SoTYdAeVIdGh075YRuwkxq0km1A2_XggzS6j0J7A4hg1Sl5d8zdl9x61sVNqQ44jn4-lHZSil7xHiQ09O0_6E1ey9zaHSgjegO8b5Q8UkPJtRaMbl_S5MudE9wdvLujd9e8uwfv7rYtvXmMXrcThj8rv0U3QB2B2r7mHZa_t_8Tew-xFo3_</recordid><startdate>20190601</startdate><enddate>20190601</enddate><creator>de Souza, Fernando Manzotti</creator><creator>dos Santos, Onélia Aparecida 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science</topic><topic>Ethanol</topic><topic>Herbicides</topic><topic>Isotherms</topic><topic>Mass transfer</topic><topic>Organic chemistry</topic><topic>Research Article</topic><topic>Sodium</topic><topic>Waste Water Technology</topic><topic>Water Management</topic><topic>Water Pollution Control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de Souza, Fernando Manzotti</creatorcontrib><creatorcontrib>dos Santos, Onélia Aparecida Andreo</creatorcontrib><creatorcontrib>Vieira, Melissa Gurgel Adeodato</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Access via ABI/INFORM 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Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de Souza, Fernando Manzotti</au><au>dos Santos, Onélia Aparecida Andreo</au><au>Vieira, Melissa Gurgel Adeodato</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Adsorption of herbicide 2,4-D from aqueous solution using organo-modified bentonite clay</atitle><jtitle>Environmental science and pollution research international</jtitle><stitle>Environ Sci Pollut Res</stitle><addtitle>Environ Sci Pollut Res Int</addtitle><date>2019-06-01</date><risdate>2019</risdate><volume>26</volume><issue>18</issue><spage>18329</spage><epage>18342</epage><pages>18329-18342</pages><issn>0944-1344</issn><eissn>1614-7499</eissn><abstract>This study analyzed the performance of organophilic clays obtained from the chemical modification of sodium bentonite clay when applied to the adsorption of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Kinetic curves and equilibrium isotherms were obtained in order to determine time and adsorption capacity of the material, as well as understand the mechanisms involved in this phenomenon. The results showed that the most predictive kinetic model for experimental data was of pseudo-second order (R
2
> 0.98), and that external mass transfer is the dominant factor in the time of operation. Isotherms were obtained at temperatures of 298, 308, and 318 K, under which the Dubinin-Radushkevich model was shown to have a good fit to data (R
2
> 0.96), according to mathematical adjustments. The maximum adsorption capacity obtained experimentally was 50.36 mg g
−1
, found at a temperature of 298 K, being higher or compatible with other materials reported in the literature. With help of the thermodynamic studies on the process, it was observed that the adsorption of 2,4-D in organophilic clays refers to a spontaneous (ΔG°
ads
< 0), exothermal (ΔH°
ads
= − 9.99 kJ mol
−1
) process of physical nature. Lastly, it was observed that the adsorbent can be easily regenerated when subjected to eluents such as mixtures containing fractions of ethanol/water (desorption = 95%).</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>31041700</pmid><doi>10.1007/s11356-019-05196-w</doi><tpages>14</tpages></addata></record> |
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| source | SpringerNature Journals |
| subjects | 2,4-D Adsorption Aquatic Pollution Aqueous solutions Atmospheric Protection/Air Quality Control/Air Pollution Bentonite Chemical modification Clay Dichlorophenoxyacetic acid Earth and Environmental Science Ecotoxicology Eluents Environment Environmental Chemistry Environmental Health Environmental science Ethanol Herbicides Isotherms Mass transfer Organic chemistry Research Article Sodium Waste Water Technology Water Management Water Pollution Control |
| title | Adsorption of herbicide 2,4-D from aqueous solution using organo-modified bentonite clay |
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