Adsorption characteristics of reactive dyes in columns of activated carbon

被引:176
作者
Al-Degs, Y. S. [1 ]
Khraisheh, M. A. M. [2 ]
Allen, S. J. [3 ]
Ahmad, M. N. [3 ]
机构
[1] Hashemite Univ, Dept Chem, Zarqa, Jordan
[2] UCL, Dept Civil & Environm Engn, London WC1E 6BT, England
[3] Queens Univ Belfast, Sch Chem Engn, Belfast BT9 5AG, Antrim, North Ireland
关键词
Activated carbon; Reactive dyes; Fixed-bed adsorber; Mass transfer zone; Bed-depth service time model; EQUILIBRIUM UPTAKE; SORPTION DYNAMICS; AQUEOUS-SOLUTION; ANIONIC DYES; REMOVAL; OPTIMIZATION; OPERATIONS; BEHAVIOR; DESIGN;
D O I
10.1016/j.jhazmat.2008.10.081
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Adsorption behaviour of reactive dyes in fixed-bed adsorber was evaluated in this work. The characteristics of mass transfer zone (MTZ), where adsorption in column occurs, were affected by carbon bed depth and influent dye concentration. The working lifetime (t(x)) of MTZ, the height of mass transfer zone (HMTZ), the rate of mass transfer zone (RMTZ), and the column capacity at exhaustion (q(column)) were estimated for the removal of remazol reactive yellow and remazol reactive black by carbon adsorber. The results showed that column capacity calculated at 90% of column exhaustion was lower than carbon capacity obtained from equilibrium studies. This indicated that the capacity of activated carbon was not fully utilized in the fixed-bed adsorber. The bed-depth service time model (BDST) was applied for analysis of reactive yellow adsorption in the column. The adsorption capacity of reactive yellow calculated at 50% breakthrough point (No) was found to be 0.1 kg kg(-1) and this value is equivalent to about 14% of the available carbon capacity. The results of this study indicated the applicability of fixed-bed adsorber for removing remazol reactive yellow from solution. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:944 / 949
页数:6
相关论文
共 23 条
[1]   Sorption behavior of cationic and anionic dyes from aqueous solution on different types of activated carbons [J].
Al-Degs, Y ;
Khraisheh, MAM ;
Allen, SJ ;
Ahmad, MNA .
SEPARATION SCIENCE AND TECHNOLOGY, 2001, 36 (01) :91-102
[2]  
Al-Degs Y, 1999, ADV ENVIRON RES, V3
[3]   Effect of carbon surface chemistry on the removal of reactive dyes from textile effluent [J].
Al-Degs, Y ;
Khraisheh, MAM ;
Allen, SJ ;
Ahmad, MN .
WATER RESEARCH, 2000, 34 (03) :927-935
[4]   Effect of surface area, micropores, secondary micropores, and mesopores volumes of activated carbons on reactive dyes adsorption from solution [J].
Al-Degs, YS ;
El-Barghouthi, MI ;
Khraisheh, MA ;
Ahmad, MN ;
Allen, SJ .
SEPARATION SCIENCE AND TECHNOLOGY, 2004, 39 (01) :97-111
[5]  
Bao ML, 1999, WATER RES, V33, P2959
[6]   Some aspects of the behavior of charcoal with respect to chlorine. [J].
Bohart, GS ;
Adams, EQ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1920, 42 :523-544
[7]  
CRITTENDEN JC, 1986, J WATER POLLUT CON F, V58, P312
[8]  
Faust S., 1987, ADSORPTION PROCESSES
[9]   Equilibrium uptake, sorption dynamics, process optimization, and column operations for the removal and recovery of malachite green from wastewater using activated carbon and activated slag [J].
Gupta, VK ;
Srivastava, SK ;
Mohan, D .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1997, 36 (06) :2207-2218
[10]   Equilibrium uptake, sorption dynamics, process development, and column operations for the removal of copper and nickel from aqueous solution and wastewater using activated slag, a low-cost adsorbent [J].
Gupta, VK .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (01) :192-202