Equilibrium, kinetic and thermodynamic studies of Reactive Red 120 dye adsorption by chitosan beads from aqueous solution

被引：68
作者：
Mubarak N.S.A. [2 ]
Jawad A.H. [1 ,2 ,3 ]
Nawawi W.I. [1 ,2 ,3 ]
机构：
[1] Coal and Biomass Energy Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, 40450, Selangor
[2] Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, 40450, Selangor
[3] Coal and Biomass Energy Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Arau Campus, Arau, 02600, Perlis
来源：
Energy, Ecology and Environment | 2017年 / 2卷 / 1期
关键词：
Adsorption; Beads; Chitosan; Reactive Red 120;
D O I：
10.1007/s40974-016-0027-6
中图分类号：
学科分类号：
摘要：
Chitosan beads (CHB) were prepared and studied in a batch mode operation for the adsorption of Reactive Red 120 dye from aqueous solution. Characterization on the surface of CHB was achieved by using point of zero charge (pH pzc ) method, Fourier transform infrared spectroscopy, and scanning electron microscopy. Adsorbent dosage (0.02–1.5 g), initial pH solution (4–12), initial dye concentrations (30–400 mg/L), and contact time (2–500 min) were used as the function to optimize the adsorption equilibrium experiments that were carried out during the course of this study. The adsorption equilibrium data show that the adsorption process obeys the Langmuir model with maximum adsorption capacities of 114.9, 123.5 and 129.9 mg/g for 303, 313 and 323 K, respectively. The kinetics of the RR 120 adsorption was well-fitted to the pseudo-second-order kinetics. Thermodynamic parameters such as standard Gibbs free energy (∆G°), standard enthalpy (∆H°) and standard entropy (∆S°) were determined. The positive value of enthalpy indicates that the uptake of RR 120 onto CHB is endothermic in nature. The results obtained supported the use of CHB as an effective as well as favorable adsorbent in treating RR 120 dye. © 2016, Joint Center on Global Change and Earth System Science of the University of Maryland and Beijing Normal University and Springer-Verlag Berlin Heidelberg.
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页码：85 / 93
页数：8
相关论文
共 38 条
[1]  
Al-Sagheer F., Merchant S., Visco-elastic properties of chitosan–titania nano-composites, Carbohydr Polym, 85, pp. 356-362, (2011)
[2]  
Alver E., Metin A.U., Anionic dye removal from aqueous solutions using modified zeolite: adsorption kinetics and isotherm studies, Chem Eng J, 200, pp. 59-67, (2012)
[3]  
Auta M., Hameed B., Coalesced chitosan activated carbon composite for batch and fixed-bed adsorption of cationic and anionic dyes, Colloids Surf B, 105, pp. 199-206, (2013)
[4]  
Auta M., Hameed B., Chitosan–clay composite as highly effective and low-cost adsorbent for batch and fixed-bed adsorption of methylene blue, Chem Eng J, 237, pp. 352-361, (2014)
[5]  
Azlan K., Saime W.N.W., Liew L., Chitosan and chemically modified chitosan beads for acid dyes sorption, J Environ Sci, 21, pp. 296-302, (2009)
[6]  
Chatterjee S., Chatterjee S., Chatterjee B.P., Das A.R., Guha A.K., Adsorption of a model anionic dye, eosin y, from aqueous solution by chitosan hydrobeads, J Colloid Interface Sci, 288, pp. 30-35, (2005)
[7]  
Crini G., Badot P.-M., Application of chitosan, a natural aminopolysaccharide, for dye removal from aqueous solutions by adsorption processes using batch studies: a review of recent literature, Prog Polym Sci, 33, pp. 399-447, (2008)
[8]  
Deveci I., Dogac Y.I., Teke M., Mercimek B., Synthesis and characterization of chitosan/TiO <sub>2</sub> composite beads for improving stability of porcine pancreatic lipase , Appl Biochem Biotechnol, 175, pp. 1052-1068, (2015)
[9]  
Fan L., Zhou Y., Yang W., Chen G., Yang F., Electrochemical degradation of aqueous solution of amaranth azo dye on ACF under potentiostatic model, Dyes Pigm, 76, pp. 440-446, (2008)
[10]  
Farzana M.H., Meenakshi S., Photo-decolorization and detoxification of toxic dyes using titanium dioxide impregnated chitosan beads, Int J Biol Macromol, 70, pp. 420-426, (2014)
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