Nanocrystalline cellulose for removal of tetracycline hydrochloride from water via biosorption: Equilibrium, kinetic and thermodynamic studies
IR@NEERI: National Environment Engineering Research Institute
View Archive Info| Field | Value | |
| Title |
Nanocrystalline cellulose for removal of tetracycline hydrochloride from water via biosorption: Equilibrium, kinetic and thermodynamic studies
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| Creator |
Rathod, Manali
Haldar, Soumya Shaik, Basha |
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| Subject |
Industrial Wastewater Treatment & Disposal
Chemistry, Chemical Technology |
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| Description |
tCrystalline nanocellulose, synthesized from green seaweed, Ulva lactuca, was investigated for the sorptionof tetracycline hydrochloride (TC) from aqueous solutions. The effects of pH, contact time, concentra-tion of TC and desorption were studied in batch mode. The kinetics of TC biosorption was very fastand reached equilibrium in almost 2 h. The kinetic data was well described by double exponentialand the pseudo-second-order kinetic models. Film diffusion is the rate-limiting step for the biosorp-tion of TC on to crystalline nanocellulose. Both Redlich–Peterson (R–P) and Polanyi–Manes (P–M)isotherm models described the equilibrium data well. The values of maximum sorption capacities(6.48–7.73 mg/g for R–P and 6.57–7.96 mg/g for P–M models) increased with temperature. A ther-modynamic study (�H◦= 22.64 kJ/mol, �S◦= 9.85 kJ/(mol/K)) demonstrated that biosorption of TC isspontaneous, endothermic and an entropy-driven process. The reusability of sorbent was achieved byHNO3(5 w/w%) with desorption efficiency of 95.20% in 4 h. The overall results have significant implica-tions for the removal of TC from aqueous solution with crystalline nanocellulose.
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| Publisher |
Elsevier
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| Date |
2015-09-04
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://neeri.csircentral.net/559/1/Ecol%20Eng_MR.pdf
Rathod, Manali and Haldar, Soumya and Shaik, Basha (2015) Nanocrystalline cellulose for removal of tetracycline hydrochloride from water via biosorption: Equilibrium, kinetic and thermodynamic studies. Ecological Engineering, 84. pp. 240-249. ISSN 0925-8574 |
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| Relation |
http://www.elsevier.com/locate/ecoleng
http://neeri.csircentral.net/559/ |
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