The removal of heavy metal from aqueous solutions by sawdust adsorption - removal of copper

被引:485
作者
Yu, B
Zhang, Y
Shukla, A
Shukla, SS
Dorris, KL
机构
[1] Lamar Univ, Dept Chem, Beaumont, TX 77710 USA
[2] SE Coll, Houston, TX 77270 USA
[3] A&B Environm Serv, Houston, TX 77098 USA
关键词
sawdust; metal ions; copper; adsorption; wastewater;
D O I
10.1016/S0304-3894(00)00278-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Locally available sawdust, a byproduct of the world industry, was found to be a low cost and promising adsorbent for the removal of copper(II) from wastewater. In this work, adsorption of copper on sawdust has been studied by using batch techniques. The equilibrium adsorption level was determined to be a function of the solution pH, contact time, and sorbate concentration. The equilibrium adsorption capacity of sawdust for copper was obtained by using linear Freundlich and Langmuir isotherms. Ion exchange is probably one of the major adsorption mechanisms for binding divalent metal ions to the maple sawdust. The results provide strong evidence to support the hypothesis of adsorption mechanism. It also supplies significant sawdust operation capacity data for engineering design. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:33 / 42
页数:10
相关论文
共 11 条
[1]   Role of sawdust in the removal of copper(II) from industrial wastes [J].
Ajmal, M ;
Khan, AH ;
Ahmad, S ;
Ahmad, A .
WATER RESEARCH, 1998, 32 (10) :3085-3091
[2]  
Atkins P.W., 1994, PHYSICAL CHEM, P992
[3]   SORPTION OF HEAVY-METALS BY UNTREATED RED FIR SAWDUST [J].
BRYANT, PS ;
PETERSEN, JN ;
LEE, JM ;
BROUNS, TM .
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 1992, 34-5 :777-788
[4]  
Dean J.G., 1972, ENVIRON SCI TECHNOL, V6, P520
[5]  
Raji C, 1997, INDIAN J CHEM TECHN, V4, P228
[6]  
Raji C, 1998, J SCI IND RES INDIA, V57, P10
[7]  
Raji C., 1997, Indian Journal of Environmental Health, V39, P230
[8]  
Randall J. M., 1974, Forest Products Journal, V24, P80
[9]  
RANDALL JM, 1977, FOREST PROD J, V27, P51
[10]  
RANDALL JM, 1976, FOREST PROD J, V26, P46