Adsorption kinetics of Rhodamine-B on used black tea leaves

Journal of Environmental Health Science Engineering

Md Shah Alam¹  Mohammad Abul Hossain¹ 

[1] Department of Chemistry, University of Dhaka, Dhaka, 1000, Bangladesh

关键词: Adsorption enthalpy;    Used black tea leaves;    Rhodamine B;    Adsorption kinetics;   

Others  :  824223
DOI  :  10.1186/1735-2746-9-2

 received in 2012-06-08, accepted in 2012-07-20,  发布年份 2012

【 摘 要 】

Rhodamine B (Rh-B) is one of the most common pollutants in the effluents of textile industries effluents in developing countries. This study was carried out to evaluate the applicability of used black tea leaves (UBTL) for the adsorptive removal of Rh-B from aqueous system by investigating the adsorption kinetics in batch process. The effects of concentration and temperature on adsorption kinetics were examined. First-, second- and pseudo-second order kinetic equations were used to investigate the adsorption mechanism. The adsorption of Rh-B on UBTL followed pseudo-second order kinetics. The equilibrium amount adsorbed and the equilibrium concentration were calculated from pseudo-second-order kinetic plots for different initial concentrations of Rh-B to construct the adsorption isotherm. The adsorption isotherm was well expressed by Langmuir equation. The maximum adsorption capacity of UBTL to Rh-B was found to be 53.2 mg/g at pH = 2.0. The equilibrium amount adsorbed, calculated from pseudo-second-order kinetic plots, increased with temperature increase. The positive value of enthalpy of adsorption, ΔH_ads = 31.22 kJ/mol, suggested that the adsorption of Rh-B on UBTL at pH = 2.0 is an endothermic process.

【 授权许可】

   
2012 Abul Hossain and Alam; licensee BioMed Central Ltd.

【 图 表 】

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【 参考文献 】

• [1]Carliell CM, Barclay SJ, Naidoo N, Buckly CA: Microbial decolonization of a reactive azo dye under anaerobic conditions. Water S A 1995, 21(1):61-69.
• [2]Ciardelli G, Corsi L, Marcucci M: Membrane separation for waste water reuse in the textile industry. Res Conserv Recy 2000, 31:189-197.
• [3]Malakootian M, Fatehizadeh A, Malakootian M, Fatehizadeh A: Color removal fom water by coagulation/caustic soda and lime. Iran J Environ Health Sci Eng 2010, 7(3):267-272.
• [4]Mehrali S, Alavi Moghaddam MR, Hashemi SH: Removal of reactive blue 19 by adding polyaluminum chloride to sequencing batch reactor system. Iran J Environ Health Sci Eng 2010, 7(1):63-70.
• [5]Mahvi AH, Maleki A, Rezaee R, Safari M: Reduction of humic substances in water by application of ultrasound wave and ultraviolet irradiation. Iran J Environ Health Sci Eng 2009, 6(4):233-240.
• [6]Mohammadian Fazli M, Mesdaghinia AR, Naddafi K, Nasseri S, Yunesian M, Mazaheri A, Mazaheri Assadi M, Rezaie S, Hamzehei H: Optimization of reactive blue 19 decolorization by ganoderma SP. using response surface methodology. Iran J Environ Health Sci Eng 2010, 7(1):35-42.
• [7]Naimabadi A, Attar HM, Shahsavani A: Decolorization and biological degradation of azo dye reactive red 2 by anaerobic/aerobic sequential process. Iran J Environ Health Sci Eng 2009, 6(2):67-72.
• [8]Dobaradaran S, Nabizadeh R, Mahvi AH, Mesdaghinia AR, Naddafi K, Yunesian M, Rastkari N, Nazmara S: Survey on degradation rates of trichloroethylene in aqueous solutions by ultrasound. Iran J Environ Health Sci Eng 2010, 7(4):307-312.
• [9]Mazloomi S, Nabizadh R, Nasseri S, Naddafi K, Nazmara S, Mahvi AH: Efficiency of domestic reverse osmosis in removal of trihalomethanes from drinking water. Iran J Environ Health Sci Eng 2009, 6(4):301-306.
• [10]Hossain MA: Study on Process Development for Removal of Cr(VI) from Waste Water by Sorption on Used Black Tea Leaves. Japan: Kanazawa University; 2006. Ph D Thesis
• [11]Rahman MA: Equilibrium Study on the Adsorption of Rhodamine B on Used Black Tea Leaves. Bangladesh: Department of Chemistry, University of Dhaka; 2010. MS Thesis
• [12]Hasan Z: Kinetic Study on Adsorption of Reactive Black 5 on Used Black Tea Leaves. Bangladesh: BS Project, Department of Chemistry, University of Dhaka; 2007.
• [13]Bhutani MM, Kumari R: Adsorption of low level 51 Cr(VI) from aqueous solution by bismuth trioxide: kinetic and IR study. J Radioanal Nucl Chem 1994, 180:145-153.
• [14]Cimino G, Passerini A, Toscano G: Removal of toxic cation and Cr(VI) from aqueous solution by Hazelnut sheel. Water Res 2000, 34:2955-2962.
• [15]Gupta VK, Gupta M, Sharma S: Process development for the removal of lead and chromium from aqueous solutions using red mud-an aluminium industry waste. Water Res 2001, 34:735-742.
• [16]Ho YS, McKay G: Kinetics of sorption of divalent metal ions onto sphagnum moss peat. Water Res 2000, 34:735-742.
• [17]Tajmeri SAI, Begum HA, Hossain MA, Rahman MT: Removal of Pb(II) from aqueous solution by sorption on used tea leaves. J Bang Acad Sci 2009, 33(2):167-168.
• [18]Hossain MA, Kumita M, Michigami Y, Mori S: Kinetics of Cr(VI) adsorption on used black tea leaves. J Chem Eng Jpn 2005, 38:402-406.
• [19]Yeddou N, Bensmaili A: Kinetic models for the sorption of dye from aqueous solution by clay-wood sawdust mixture. Desalination 2005, 185:499-508.
• [20]Allen SJ, Koumanova B: Decolourisation of water/waste water using adsorption (Review). J Univ Chem Techno and Metallur 2005, 40(3):175-192.
• [21]Amin NK: Removal of reactive dye from aqueous solutions by the adsorption onto activated carbons prepared from the sugarcane bagasse pith. Desalination 2008, 223(9):152-161.
• [22]Hossain MA, Kumita M, Michigami Y, Mori S: Optimization of parameter for Cr(VI) adsorption on used black tea leaves. Adsorption 2005, 11:61-68.
• [23]Hu T, Wu SC: Assessment of the effect of azo dye RP2B on the growth of Langmuir I. J Am Chem Soc 2001, 38:2221-2228.