Adsorption of food dyes onto chitosan: Optimization process and kinetic
Adsorption of food dyes acid blue 9 and food yellow 3 onto chitosan was optimized. Chitosan was obtained from shrimp wastes and characterized. A full factorial design was used to analyze the effects of pH, stirring rate and contact time in adsorption capacity. In the optimal conditions, adsorption k...
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| Veröffentlicht in: | Carbohydrate polymers 2011-02, Vol.84 (1), p.231-238 |
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| creator | Dotto, G.L. Pinto, L.A.A. |
| description | Adsorption of food dyes acid blue 9 and food yellow 3 onto chitosan was optimized. Chitosan was obtained from shrimp wastes and characterized. A full factorial design was used to analyze the effects of pH, stirring rate and contact time in adsorption capacity. In the optimal conditions, adsorption kinetics was studied and the experimental data were fitted with three kinetic models. The produced chitosan showed good characteristics for dye adsorption. The optimal conditions were: pH 3, 150rpm and 60min for acid blue 9 and pH 3, 50rpm and 60min for food yellow 3. In these conditions, the adsorption capacities values were 210mgg−1 and 295mgg−1 for acid blue 9 and food yellow 3, respectively. The Elovich kinetic model was the best fit for experimental data and it showed the chemical nature of dyes adsorption onto chitosan. |
| doi_str_mv | 10.1016/j.carbpol.2010.11.028 |
| format | Article |
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Chitosan was obtained from shrimp wastes and characterized. A full factorial design was used to analyze the effects of pH, stirring rate and contact time in adsorption capacity. In the optimal conditions, adsorption kinetics was studied and the experimental data were fitted with three kinetic models. The produced chitosan showed good characteristics for dye adsorption. The optimal conditions were: pH 3, 150rpm and 60min for acid blue 9 and pH 3, 50rpm and 60min for food yellow 3. In these conditions, the adsorption capacities values were 210mgg−1 and 295mgg−1 for acid blue 9 and food yellow 3, respectively. 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Chitosan was obtained from shrimp wastes and characterized. A full factorial design was used to analyze the effects of pH, stirring rate and contact time in adsorption capacity. In the optimal conditions, adsorption kinetics was studied and the experimental data were fitted with three kinetic models. The produced chitosan showed good characteristics for dye adsorption. The optimal conditions were: pH 3, 150rpm and 60min for acid blue 9 and pH 3, 50rpm and 60min for food yellow 3. In these conditions, the adsorption capacities values were 210mgg−1 and 295mgg−1 for acid blue 9 and food yellow 3, respectively. The Elovich kinetic model was the best fit for experimental data and it showed the chemical nature of dyes adsorption onto chitosan.</description><subject>Acid blue 9</subject><subject>adsorption</subject><subject>Adsorption capacity</subject><subject>Applied sciences</subject><subject>chitosan</subject><subject>dyes</subject><subject>Elovich model</subject><subject>Exact sciences and technology</subject><subject>food coloring</subject><subject>Food dye</subject><subject>Food yellow 3</subject><subject>mixing</subject><subject>Natural polymers</subject><subject>Physicochemistry of polymers</subject><subject>shrimp</subject><subject>Starch and polysaccharides</subject><subject>wastes</subject><issn>0144-8617</issn><issn>1879-1344</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkMFKJDEQhoMoOKs-gmxfBC89ppLupMeLiLjuguBBPYfqpOJm7OmMSbvgPr2ZnWGv1qWg-Krq52PsFPgcOKiL5dxi6tdxmAu-mcGci26PzaDTixpk0-yzGYemqTsF-pB9y3nJSyngM3Z37XJM6ynEsYq-8jG6yn1QruI4xcr-DlPMOF5WDwVZhb_4D1ynaCnnCkdXvYaRpmCP2YHHIdPJrh-x5x-3Tzc_6_uHu1831_e1bZSYakmcUHvtrZKaUGrQDhyB9FYo0QsisM4jIHrXdrLvRad68nYBXC-AnDxi59u7JcPbO-XJrEK2NAw4UnzPBpq2a4XquCpou0Vtijkn8madwgrThwFuNuLM0uzEmY04A2CKuLJ3tnuB2eLgE4425P_LQhaNkovCfd9yHqPBl1SY58dySBW3zaLTbSGutgQVI38CJZNtoNGSC4nsZFwMX2T5BP09kOQ</recordid><startdate>20110211</startdate><enddate>20110211</enddate><creator>Dotto, G.L.</creator><creator>Pinto, L.A.A.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>20110211</creationdate><title>Adsorption of food dyes onto chitosan: Optimization process and kinetic</title><author>Dotto, G.L. ; Pinto, L.A.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c462t-3e0ea7f7fc637ea3717d1de13fc262b2ee1cdfa1aafd583bb286befc910791ed3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acid blue 9</topic><topic>adsorption</topic><topic>Adsorption capacity</topic><topic>Applied sciences</topic><topic>chitosan</topic><topic>dyes</topic><topic>Elovich model</topic><topic>Exact sciences and technology</topic><topic>food coloring</topic><topic>Food dye</topic><topic>Food yellow 3</topic><topic>mixing</topic><topic>Natural polymers</topic><topic>Physicochemistry of polymers</topic><topic>shrimp</topic><topic>Starch and polysaccharides</topic><topic>wastes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dotto, G.L.</creatorcontrib><creatorcontrib>Pinto, L.A.A.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Carbohydrate polymers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dotto, G.L.</au><au>Pinto, L.A.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Adsorption of food dyes onto chitosan: Optimization process and kinetic</atitle><jtitle>Carbohydrate polymers</jtitle><date>2011-02-11</date><risdate>2011</risdate><volume>84</volume><issue>1</issue><spage>231</spage><epage>238</epage><pages>231-238</pages><issn>0144-8617</issn><eissn>1879-1344</eissn><coden>CAPOD8</coden><abstract>Adsorption of food dyes acid blue 9 and food yellow 3 onto chitosan was optimized. Chitosan was obtained from shrimp wastes and characterized. A full factorial design was used to analyze the effects of pH, stirring rate and contact time in adsorption capacity. In the optimal conditions, adsorption kinetics was studied and the experimental data were fitted with three kinetic models. The produced chitosan showed good characteristics for dye adsorption. The optimal conditions were: pH 3, 150rpm and 60min for acid blue 9 and pH 3, 50rpm and 60min for food yellow 3. In these conditions, the adsorption capacities values were 210mgg−1 and 295mgg−1 for acid blue 9 and food yellow 3, respectively. The Elovich kinetic model was the best fit for experimental data and it showed the chemical nature of dyes adsorption onto chitosan.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.carbpol.2010.11.028</doi><tpages>8</tpages></addata></record> |
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| ispartof | Carbohydrate polymers, 2011-02, Vol.84 (1), p.231-238 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Acid blue 9 adsorption Adsorption capacity Applied sciences chitosan dyes Elovich model Exact sciences and technology food coloring Food dye Food yellow 3 mixing Natural polymers Physicochemistry of polymers shrimp Starch and polysaccharides wastes |
| title | Adsorption of food dyes onto chitosan: Optimization process and kinetic |
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