Bio-polymer adsorbent for the removal of malachite green from aqueous solution
A simple, economical and green methodology has been developed for the adsorption of malachite green using cellulose powder as the adsorbent. Batch experimental procedures were conducted to investigate the adsorption ability of this bio-polymer to remove malachite green from aqueous medium. The adsor...
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| Veröffentlicht in: | Chemosphere (Oxford) 2009-10, Vol.77 (6), p.842-847 |
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| creator | Pradeep Sekhar, C. Kalidhasan, S. Rajesh, Vidya Rajesh, N. |
| description | A simple, economical and green methodology has been developed for the adsorption of malachite green using cellulose powder as the adsorbent. Batch experimental procedures were conducted to investigate the adsorption ability of this bio-polymer to remove malachite green from aqueous medium. The adsorbed dye on cellulose was characterized by Fourier transform-infrared spectroscopy (FT-IR). The various analytical parameters such as the effect of contact time, pH, temperature, etc. were optimized. The adsorption was efficient at a neutral pH (7.2) and both Langmuir and Freundlich isotherm models showed good fit into the experimental data. The adsorption kinetics indicated that the adsorption proceeds according to pseudo-second-order model. The adsorption of malachite green was found to be exothermic and it was accompanied by decrease in the entropy. Column studies were performed and the regeneration of the adsorbent was done easily using environmentally benign polyethylene glycol-400. |
| doi_str_mv | 10.1016/j.chemosphere.2009.07.068 |
| format | Article |
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Column studies were performed and the regeneration of the adsorbent was done easily using environmentally benign polyethylene glycol-400.</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Cellulose</subject><subject>Cellulose - chemistry</subject><subject>Exact sciences and technology</subject><subject>Hydrogen-Ion Concentration</subject><subject>Isotherm model</subject><subject>Kinetics</subject><subject>Malachite green</subject><subject>Models, Chemical</subject><subject>Pollution</subject><subject>Polyethylene glycol</subject><subject>Reaction kinetics</subject><subject>Rosaniline Dyes - chemistry</subject><subject>Spectroscopy, Fourier Transform Infrared</subject><subject>Thermodynamics</subject><subject>Water - chemistry</subject><subject>Water Pollutants, Chemical - chemistry</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU2P0zAQhi0EYsvCX0DmAJwSxk7s2Ee24ktawQXOlu2MqaskLna60v57XLUCTsBpLs8782oeQl4waBkw-Wbf-h3OqRx2mLHlALqFoQWpHpANU4NuGNfqIdkA9KKRohNX5Ekpe4AaFvoxuWJ6kGLQYkM-38TUHNJ0P2OmdiwpO1xWGlKm6w5prmfu7ERToLOdrN_FFen3jLjQkNNM7Y8jpmOhJU3HNablKXkU7FTw2WVek2_v333dfmxuv3z4tH172_heqrXR2gcpfc_RsdEHFZzT3IG1gxXSM3ReOKZGPToQrOOD9KLmOGNOQhit6K7J6_PeQ061QlnNHIvHabLLqY8Zuh4UKNVV8tVfya5XvZRC_hPkoKVmnFVQn0GfUykZgznkONt8bxiYkx-zN3_4MSc_BgZT_dTs88uRo5tx_J28CKnAywtgi7dTyHbxsfziOIeh-uwrtz1zWL98FzGb4iMuHseY0a9mTPE_6vwEgD-1Qw</recordid><startdate>20091001</startdate><enddate>20091001</enddate><creator>Pradeep Sekhar, C.</creator><creator>Kalidhasan, S.</creator><creator>Rajesh, Vidya</creator><creator>Rajesh, N.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><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>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>SOI</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope></search><sort><creationdate>20091001</creationdate><title>Bio-polymer adsorbent for the removal of malachite green from aqueous solution</title><author>Pradeep Sekhar, C. ; 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Batch experimental procedures were conducted to investigate the adsorption ability of this bio-polymer to remove malachite green from aqueous medium. The adsorbed dye on cellulose was characterized by Fourier transform-infrared spectroscopy (FT-IR). The various analytical parameters such as the effect of contact time, pH, temperature, etc. were optimized. The adsorption was efficient at a neutral pH (7.2) and both Langmuir and Freundlich isotherm models showed good fit into the experimental data. The adsorption kinetics indicated that the adsorption proceeds according to pseudo-second-order model. The adsorption of malachite green was found to be exothermic and it was accompanied by decrease in the entropy. 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| subjects | Adsorption Applied sciences Cellulose Cellulose - chemistry Exact sciences and technology Hydrogen-Ion Concentration Isotherm model Kinetics Malachite green Models, Chemical Pollution Polyethylene glycol Reaction kinetics Rosaniline Dyes - chemistry Spectroscopy, Fourier Transform Infrared Thermodynamics Water - chemistry Water Pollutants, Chemical - chemistry |
| title | Bio-polymer adsorbent for the removal of malachite green from aqueous solution |
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