Magnetic xanthate modified chitosan as an emerging adsorbent for cationic azo dyes removal: Kinetic, thermodynamic and isothermal studies
In the present study, a novel xanthate modified magnetic chitosan, with Al2O3/Fe3O4 core-shell particle as magnetic core, was synthesized, characterized and used as an efficient adsorbent for the removal of cationic azo dye models. The adsorption study demonstrated that the xanthate modification of...
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| Veröffentlicht in: | International journal of biological macromolecules 2019-01, Vol.121, p.1126-1134 |
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| creator | Tanhaei, Bahareh Ayati, Ali Sillanpää, Mika |
| description | In the present study, a novel xanthate modified magnetic chitosan, with Al2O3/Fe3O4 core-shell particle as magnetic core, was synthesized, characterized and used as an efficient adsorbent for the removal of cationic azo dye models. The adsorption study demonstrated that the xanthate modification of magnetic chitosan significantly improves its adsorption activity toward methylene blue and safranin O. The optimized adsorbent dosage was obtained 0.8 mg g−1 and the process was found to be optimal in the wide pH range of 4–11. The kinetic data were evaluated well utilizing the pseudo-second-order model and it was shown that the adsorption kinetics was controlled by film diffusion and intra-particle diffusion, simultaneously. Also, the equilibrium data were fitted by Langmuir (R2 > 0.95) and very well correlated with Sips isotherm (R2 > 0.990) model. The maximum adsorption capacities were obtained 197.8 and 169.8 mg g−1 toward the methylene blue and Safranin O at 35 °C respectively. The thermodynamic analysis confirmed the endothermic, spontaneous and irreversible adsorption process. |
| doi_str_mv | 10.1016/j.ijbiomac.2018.10.137 |
| format | Article |
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The adsorption study demonstrated that the xanthate modification of magnetic chitosan significantly improves its adsorption activity toward methylene blue and safranin O. The optimized adsorbent dosage was obtained 0.8 mg g−1 and the process was found to be optimal in the wide pH range of 4–11. The kinetic data were evaluated well utilizing the pseudo-second-order model and it was shown that the adsorption kinetics was controlled by film diffusion and intra-particle diffusion, simultaneously. Also, the equilibrium data were fitted by Langmuir (R2 > 0.95) and very well correlated with Sips isotherm (R2 > 0.990) model. The maximum adsorption capacities were obtained 197.8 and 169.8 mg g−1 toward the methylene blue and Safranin O at 35 °C respectively. The thermodynamic analysis confirmed the endothermic, spontaneous and irreversible adsorption process.</description><identifier>ISSN: 0141-8130</identifier><identifier>EISSN: 1879-0003</identifier><identifier>DOI: 10.1016/j.ijbiomac.2018.10.137</identifier><identifier>PMID: 30342945</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Adsorption ; Aluminum Oxide - chemistry ; Azo Compounds - chemistry ; Azo Compounds - isolation & purification ; Chitosan - chemistry ; Ferrosoferric Oxide - chemistry ; Kinetics ; Magnetic chitosan ; Temperature ; Water Purification ; Xanthate modification</subject><ispartof>International journal of biological macromolecules, 2019-01, Vol.121, p.1126-1134</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright © 2018 Elsevier B.V. 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The adsorption study demonstrated that the xanthate modification of magnetic chitosan significantly improves its adsorption activity toward methylene blue and safranin O. The optimized adsorbent dosage was obtained 0.8 mg g−1 and the process was found to be optimal in the wide pH range of 4–11. The kinetic data were evaluated well utilizing the pseudo-second-order model and it was shown that the adsorption kinetics was controlled by film diffusion and intra-particle diffusion, simultaneously. Also, the equilibrium data were fitted by Langmuir (R2 > 0.95) and very well correlated with Sips isotherm (R2 > 0.990) model. The maximum adsorption capacities were obtained 197.8 and 169.8 mg g−1 toward the methylene blue and Safranin O at 35 °C respectively. The thermodynamic analysis confirmed the endothermic, spontaneous and irreversible adsorption process.</description><subject>Adsorption</subject><subject>Aluminum Oxide - chemistry</subject><subject>Azo Compounds - chemistry</subject><subject>Azo Compounds - isolation & purification</subject><subject>Chitosan - chemistry</subject><subject>Ferrosoferric Oxide - chemistry</subject><subject>Kinetics</subject><subject>Magnetic chitosan</subject><subject>Temperature</subject><subject>Water Purification</subject><subject>Xanthate modification</subject><issn>0141-8130</issn><issn>1879-0003</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkcuOEzEQRS0EYsLAL4y8ZEEHu-1-sQKNeIlBbGBtle3qpKJue7CdEeEP-Gs6yQxbNlXS1albqrqMXUmxlkK2r3dr2lmKM7h1LWS_Puqqe8RWsu-GSgihHrOVkFpWvVTigj3LebeobSP7p-xCCaXrQTcr9ucrbAIWcvwXhLKFgnyOnkZCz92WSswQOGS-VJwxbShsOPgck8VQ-BgTd1AohsUAfkfuD5h5wjnewfSGf6GT9StetpgW20OA-QgGzynHkwgTz2XvCfNz9mSEKeOL-37Jfnx4__36U3Xz7ePn63c3lVODLtXghG4G7DvvhLSdBaFGq2Rbo28ap4fWwljXoNEOnW-6HkYlULY4uN7W9ejUJXt59r1N8ececzEzZYfTBAHjPptaqla0utPNgrZn1KWYc8LR3CaaIR2MFOYYg9mZhxjMMYaTrrpl8Op-x97O6P-NPfx9Ad6eAVwuvSNMJjvC4NBTQleMj_S_HX8B1gOfvA</recordid><startdate>201901</startdate><enddate>201901</enddate><creator>Tanhaei, Bahareh</creator><creator>Ayati, Ali</creator><creator>Sillanpää, Mika</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>201901</creationdate><title>Magnetic xanthate modified chitosan as an emerging adsorbent for cationic azo dyes removal: Kinetic, thermodynamic and isothermal studies</title><author>Tanhaei, Bahareh ; Ayati, Ali ; Sillanpää, Mika</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-9c0459e87dc01b7ba03fb3162ed55c496baf22a4eb97d578af30e16e9c8b22fc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Adsorption</topic><topic>Aluminum Oxide - chemistry</topic><topic>Azo Compounds - chemistry</topic><topic>Azo Compounds - isolation & purification</topic><topic>Chitosan - chemistry</topic><topic>Ferrosoferric Oxide - chemistry</topic><topic>Kinetics</topic><topic>Magnetic chitosan</topic><topic>Temperature</topic><topic>Water Purification</topic><topic>Xanthate modification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tanhaei, Bahareh</creatorcontrib><creatorcontrib>Ayati, Ali</creatorcontrib><creatorcontrib>Sillanpää, Mika</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>International journal of biological macromolecules</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tanhaei, Bahareh</au><au>Ayati, Ali</au><au>Sillanpää, Mika</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetic xanthate modified chitosan as an emerging adsorbent for cationic azo dyes removal: Kinetic, thermodynamic and isothermal studies</atitle><jtitle>International journal of biological macromolecules</jtitle><addtitle>Int J Biol Macromol</addtitle><date>2019-01</date><risdate>2019</risdate><volume>121</volume><spage>1126</spage><epage>1134</epage><pages>1126-1134</pages><issn>0141-8130</issn><eissn>1879-0003</eissn><abstract>In the present study, a novel xanthate modified magnetic chitosan, with Al2O3/Fe3O4 core-shell particle as magnetic core, was synthesized, characterized and used as an efficient adsorbent for the removal of cationic azo dye models. The adsorption study demonstrated that the xanthate modification of magnetic chitosan significantly improves its adsorption activity toward methylene blue and safranin O. The optimized adsorbent dosage was obtained 0.8 mg g−1 and the process was found to be optimal in the wide pH range of 4–11. The kinetic data were evaluated well utilizing the pseudo-second-order model and it was shown that the adsorption kinetics was controlled by film diffusion and intra-particle diffusion, simultaneously. Also, the equilibrium data were fitted by Langmuir (R2 > 0.95) and very well correlated with Sips isotherm (R2 > 0.990) model. The maximum adsorption capacities were obtained 197.8 and 169.8 mg g−1 toward the methylene blue and Safranin O at 35 °C respectively. The thermodynamic analysis confirmed the endothermic, spontaneous and irreversible adsorption process.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>30342945</pmid><doi>10.1016/j.ijbiomac.2018.10.137</doi><tpages>9</tpages></addata></record> |
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| ispartof | International journal of biological macromolecules, 2019-01, Vol.121, p.1126-1134 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Adsorption Aluminum Oxide - chemistry Azo Compounds - chemistry Azo Compounds - isolation & purification Chitosan - chemistry Ferrosoferric Oxide - chemistry Kinetics Magnetic chitosan Temperature Water Purification Xanthate modification |
| title | Magnetic xanthate modified chitosan as an emerging adsorbent for cationic azo dyes removal: Kinetic, thermodynamic and isothermal studies |
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