Preparation of activated carbon from a renewable bio-plant of Euphorbia rigida by H2SO4 activation and its adsorption behavior in aqueous solutions

被引:271
作者
Gercel, Ozgul
Ozcan, Adnan
Ozcan, A. Safa
Gercel, H. Ferdi
机构
[1] Anadolu Univ, Dept Environm Engn, Fac Engn, TR-26555 Eskisehir, Turkey
[2] Anadolu Univ, Dept Chem, Fac Sci, TR-26470 Eskisehir, Turkey
[3] Anadolu Univ, Dept Chem Engn, Fac Engn, TR-26555 Eskisehir, Turkey
关键词
activated carbon; adsorption; basic dye; Euphorbia rigida; biomass kinetics;
D O I
10.1016/j.apsusc.2006.10.053
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The use of activated carbon obtained from Euphorbia rigida for the removal of a basic textile dye, which is methylene blue, from aqueous solutions at various contact times, pHs and temperatures was investigated. The plant material was chemically modified with H2SO4. The surface area of chemically modified activated carbon was 741.2 m(2) g(-1). The surface characterization of both plant-and activated carbon was undertaken using FTIR spectroscopic technique. The adsorption process attains equilibrium within 60 min. The experimental data indicated that the adsorption isotherms are well described by the Langmuir equilibrium isotherm equation and the calculated adsorption capacity of activated carbon was 114.45 mg g(-1) at 40 degrees C. The adsorption kinetics of methylene blue obeys the pseudo- second-order kinetic model and also followed by the intraparticle diffusion model up to 60 min. The thermodynamic parameters such as Delta G degrees, Delta H degrees and Delta S degrees were calculated to estimate the nature of adsorption. The activation energy of the system was calculated as 55.5 1 kJ mol(-1). According to these results, prepared activated carbon could be used as a low-cost adsorbent to compare with the commercial activated carbon for the removal textile dyes from textile wastewater processes. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:4843 / 4852
页数:10
相关论文
共 67 条
[21]   Variation in the FTIR spectra of a biomass under impregnation, carbonization and oxidation conditions [J].
El-Hendawy, ANA .
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2006, 75 (02) :159-166
[22]   Surface and adsorptive properties of carbons prepared from biomass [J].
El-Hendawy, ANA .
APPLIED SURFACE SCIENCE, 2005, 252 (02) :287-295
[23]   Influence of HNO3 oxidation on the structure and adsorptive properties of corncob-based activated carbon [J].
El-Hendawy, ANA .
CARBON, 2003, 41 (04) :713-722
[24]  
Freundlich H, 1906, Z PHYS CHEM-STOCH VE, V57, P385
[25]   Basic dye (methylene blue) removal from simulated wastewater by adsorption sawdust: a timber using Indian Rosewood industry waste [J].
Garg, VK ;
Amita, M ;
Kumar, R ;
Gupta, R .
DYES AND PIGMENTS, 2004, 63 (03) :243-250
[26]   Adsorption of malachite green on micro- and mesoporous rice husk-based active carbon [J].
Guo, YP ;
Yang, SF ;
Fu, WY ;
Qi, JR ;
Li, RZ ;
Wang, ZC ;
Xu, HD .
DYES AND PIGMENTS, 2003, 56 (03) :219-229
[27]   Production of granular activated carbon from waste Rosa canina sp seeds and its adsorption characteristics for dye [J].
Gürses, A ;
Dogar, Ç ;
Karaca, S ;
Açikyildiz, M ;
Bayrak, R .
JOURNAL OF HAZARDOUS MATERIALS, 2006, 131 (1-3) :254-259
[28]   PORE- AND SOLID-DIFFUSION KINETICS IN FIXED-BED ADSORPTION UNDER CONSTANT-PATTERN CONDITIONS [J].
HALL, KR ;
EAGLETON, LC ;
ACRIVOS, A ;
VERMEULEN, T .
INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1966, 5 (02) :212-+
[29]   Kinetic models for the sorption of dye from aqueous solution by wood [J].
Ho, YS ;
McKay, G .
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 1998, 76 (B2) :183-191
[30]  
Jaycock M.J., 1981, Chemistry of Interfaces