Evaluation of the use of loofa activated carbons as potential adsorbents for aqueous solutions containing dye
作者： Ola Abdelwahab
DOI: 10.1016/J.DESAL.2007.01.146
关键词: Adsorption 、 Freundlich equation 、 Exothermic process 、 Gibbs free energy 、 Nuclear chemistry 、 Physical chemistry 、 Sorption 、 Chemistry 、 Langmuir 、 Activated carbon 、 Enthalpy
摘要: Abstract In this study, two activated carbons were prepared from loofa, loofa carbon-1 (LC1) and carbon-2 (LC2). The surface structure of LC1 LC2 analyzed by scanning electronic microscopy (SEM). ability to remove reactive orange (RO) dye aqueous solutions adsorption has been studied. A series experiments conducted assess the effect system variables such as initial pH, metal ion concentration temperature. results showed that was maximal at lowest value pH (pH =1) most suitable sorption temperature 25°C with maximum capacities 38.3 50 mg/g for respectively. Langmuir, Freundlich, Dubinin–Radushkevich (D–R), Temkin Harkins–Jura isotherms used analyze equilibrium data different temperatures. kinetics found follow a pseudo-first-order rate kinetic model. addition, various thermodynamic parameters, standard Gibbs free energy (▵ G 0 ), enthalpy H entropy S activation ( E ) have calculated. process onto be spontaneous exothermic process.
elsevier.com
sci-hub.se 参考文章(27)
Y.M. Slokar, A. Majcen Le Marechal, Methods of decoloration of textile wastewaters Dyes and Pigments. ,vol. 37, pp. 335- 356 ,(1998) , 10.1016/S0143-7208(97)00075-2
Buning Chen, Chi Wai Hui, Gordon McKay, Film-pore diffusion modeling and contact time optimization for the adsorption of dyestuffs on pith Chemical Engineering Journal. ,vol. 84, pp. 77- 94 ,(2001) , 10.1016/S1385-8947(01)00193-0
N.K. Lazaridis, T.D. Karapantsios, D. Georgantas, Kinetic analysis for the removal of a reactive dye from aqueous solution onto hydrotalcite by adsorption Water Research. ,vol. 37, pp. 3023- 3033 ,(2003) , 10.1016/S0043-1354(03)00121-0
W.T Tsai, C.Y Chang, M.C Lin, S.F Chien, H.F Sun, M.F Hsieh, Adsorption of acid dye onto activated carbons prepared from agricultural waste bagasse by ZnCl2 activation. Chemosphere. ,vol. 45, pp. 51- 58 ,(2001) , 10.1016/S0045-6535(01)00016-9
C. Namasivayam, D.J.S.E. Arasi, Removal of congo red from wastewater by adsorption onto waste red mud Chemosphere. ,vol. 34, pp. 401- 417 ,(1997) , 10.1016/S0045-6535(96)00385-2
A. El Nemr, O. Abdelwahab, A. Khaled, A. El Sikaily, Biosorption of Direct Yellow 12 from aqueous solution using green alga Ulva lactuca Chemistry and Ecology. ,vol. 22, pp. 253- 266 ,(2006) , 10.1080/02757540600812875
Indra D. Mall, Vimal C. Srivastava, Nitin K. Agarwal, Removal of Orange-G and Methyl Violet dyes by adsorption onto bagasse fly ash—kinetic study and equilibrium isotherm analyses Dyes and Pigments. ,vol. 69, pp. 210- 223 ,(2006) , 10.1016/J.DYEPIG.2005.03.013
S. Netpradit, P. Thiravetyan, S. Towprayoon, Evaluation of metal hydroxide sludge for reactive dye adsorption in a fixed-bed column system. Water Research. ,vol. 38, pp. 71- 78 ,(2004) , 10.1016/J.WATRES.2003.09.007
M. A. M Khraisheh, Y. S. Al-Degs, S. J. Allen, M. N. Ahmad, Elucidation of Controlling Steps of Reactive Dye Adsorption on Activated Carbon Industrial & Engineering Chemistry Research. ,vol. 41, pp. 1651- 1657 ,(2002) , 10.1021/IE000942C
S.A Figueiredo, R.A Boaventura, J.M Loureiro, Color removal with natural adsorbents: modeling, simulation and experimental Separation and Purification Technology. ,vol. 20, pp. 129- 141 ,(2000) , 10.1016/S1383-5866(00)00068-X