Competitive adsorption of molybdate, chromate, sulfate, selenate, and selenite on γ-Al2O3

被引：124
作者：
Wu, CH [1 ]
Lo, SL [1 ]
Lin, CF [1 ]
机构：
[1] Natl Taiwan Univ, Grad Inst Environm Engn, Taipei 106, Taiwan
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2000年 / 166卷 / 1-3期
关键词：
competitive adsorption; molybdate; chromate; sulfate; selenate; selenite; TLM;
D O I：
10.1016/S0927-7757(99)00404-5
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：
Competitive adsorption of molybdate, selenite, selenate, chromate, and sulfate onto gamma-Al2O3 was investigated in the present study. Binary-solute systems of MoO42-/SeO32-, CrO42-/SO32-, and CrO42-/SeO42- as well as single anion systems were evaluated for the relative influence on competitive adsorption on oxide surface. As would be expected, the adsorption density of each anion in the binary-solute systems decreases, as compared to the respective density in a single anion system. Furthermore, MoO42- inhibits SeO32- adsorption in acidic condition and that SO42- or SeO42- depresses CrO42-. The order of the relative retainment of anions on oxide surface is molybdate > selenite > selenate sulfate > chromate, which corresponds to the magnitude of the overall proton coefficient of the corresponding anions. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：251 / 259
页数：9
相关论文
共 26 条
[1]   CHROMATE ADSORPTION ON GOETHITE - EFFECTS OF ALUMINUM SUBSTITUTION [J].
AINSWORTH, CC ;
GIRVIN, DC ;
ZACHARA, JM ;
SMITH, SC .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1989, 53 (02) :411-418
[2]  
[Anonymous], 1982, IONISATION CONSTANTS
[3]   CALCIUM-INDUCED SULFATE ADSORPTION BY SOILS [J].
BOLAN, NS ;
SYERS, JK ;
SUMNER, ME .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1993, 57 (03) :691-696
[4]   Competition between monovalent and divalent anions for calcined and uncalcined hydrotalcite: Anion exchange and adsorption sites [J].
Chatelet, L ;
Bottero, JY ;
Yvon, J ;
Bouchelaghem, A .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1996, 111 (03) :167-175
[5]   SURFACE IONIZATION AND COMPLEXATION AT OXIDE-WATER INTERFACE .2. SURFACE PROPERTIES OF AMORPHOUS IRON OXYHYDROXIDE AND ADSORPTION OF METAL-IONS [J].
DAVIS, JA ;
LECKIE, JO .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1978, 67 (01) :90-107
[6]   SURFACE IONIZATION AND COMPLEXATION AT OXIDE-WATER INTERFACE .1. COMPUTATION OF ELECTRICAL DOUBLE-LAYER PROPERTIES IN SIMPLE ELECTROLYTES [J].
DAVIS, JA ;
JAMES, RO ;
LECKIE, JO .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1978, 63 (03) :480-499
[7]   Influence of organic acids on selenite sorption by poorly ordered aluminum hydroxides [J].
Dynes, JJ ;
Huang, PM .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1997, 61 (03) :772-783
[8]   Arsenate and chromate retention mechanisms on goethite .1. Surface structure [J].
Fendorf, S ;
Eick, MJ ;
Grossl, P ;
Sparks, DL .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (02) :315-320
[9]   COMPETITIVE ADSORPTION OF PHOSPHATE ON GOETHITE IN MARINE ELECTROLYTES [J].
HAWKE, D ;
CARPENTER, PD ;
HUNTER, KA .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1989, 23 (02) :187-191
[10]  
Hayes K. F., 1987, THESIS STANFORD U ST
123