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231224s2012 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2012.878
|2 doi
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|a pubmed24n0715.xml
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|a DE-627
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|a eng
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|a Wu, C H
|e verfasserin
|4 aut
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|a Removal of C.I. Reactive Red 2 from aqueous solutions by chitin
|b an insight into kinetics, equilibrium, and thermodynamics
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|c 2012
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 12.04.2012
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a In this study, C.I. Reactive Red 2 (RR2) was removed from aqueous solutions by chitin. Exactly how the RR2 concentration, chitin dosage, pH, and temperature affected adsorption of RR2 by chitin was then determined. After reaction for 120 min, the amount of 10 and 20 mg/L RR2 absorbed onto chitin was 5.7 and 7.5 mg/g, respectively. The adsorption percentage increased from 56 to 94% when the chitin dosage was increased from 1.5 to 2.5 g/L. Experimental results indicated that the pseudo-second-order model best represents adsorption kinetics. Adsorption of RR2 increased as the temperature increased; however, it decreased with an increased pH. Experimental results further demonstrated that the Freundlich model is superior to the Langmuir model in fitting experimental isotherms. The ΔH° and ΔS° were 16.34 kJ/mol and 152.10 J/mol K, respectively. ΔH° suggested that adsorption of RR2 onto chitin was via physisorption
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Coloring Agents
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|a Naphthalenesulfonates
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|a Triazines
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|a Water Pollutants, Chemical
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|a reactive red 2
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|a Water
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|a 059QF0KO0R
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|a Chitin
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|a 1398-61-4
|2 NLM
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|a Kuo, C Y
|e verfasserin
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|a Yeh, C H
|e verfasserin
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|a Chen, M J
|e verfasserin
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 65(2012), 3 vom: 01., Seite 490-5
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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|g volume:65
|g year:2012
|g number:3
|g day:01
|g pages:490-5
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|u http://dx.doi.org/10.2166/wst.2012.878
|3 Volltext
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