THE EFFECT OF COMPLEXING AGENTS

被引：18

作者：

DAVIS, AP

HSIEH, YH

HUANG, CP

机构：

[1] UNIV DELAWARE,ENVIRONM ENGN PROGRAM,NEWARK,DE 19716

[2] UNIV MARYLAND,DEPT CIVIL ENGN,ENVIRONM ENGN PROGRAM,COLLEGE PK,MD 20742

来源：

CHEMOSPHERE | 1995年 / 31卷 / 04期

关键词：

D O I：

10.1016/0045-6535(95)00168-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photo-oxidative dissolution of cadmium sulfide has been investigated in the presence of several complexing organic and inorganic compounds under oxygen-saturated conditions. At pH 4 and 7, aromatic organic ligands enhance the cadmium dissolution rate by a factor of 5-6 over that without the organic present; EDTA, NTA, and citric and oxalic acids have little effect. Sulfite and hydrogen sulfide/bisulfide slightly enhance the dissolution. Conversely, at pH 10, EDTA and NTA produce a significant increase in dissolved cadmium (factor of approximately 18) while the other compounds exert little effect. These phenomena are explained by ligand surface complexation, and both surface and homogeneous ligand-cnhanced dissolution.

引用

页码：3093 / 3104

页数：12

共 20 条

[1]

ALFONSO MD, 1992, LANGMUIR, V8, P1671

[2] ADSORPTION CHARACTERISTICS OF POLYACETIC AMINO-ACIDS ONTO HYDROUS GAMMA-AL2O3 [J].

BOWERS, AR ;

HUANG, CP .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1985, 105 (01) :197-215

[3]

BUHLER N, 1984, J PHYS CHEM-US, V88, P3261, DOI 10.1021/j150659a025

[4] INTERACTIONS OF METAL HYDROUS OXIDES WITH CHELATING-AGENTS .4. DISSOLUTION OF HEMATITE [J].

CHANG, HC ;

MATIJEVIC, E .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1983, 92 (02) :479-488

[5] THE PHOTOCATALYTIC OXIDATION OF SULFUR-CONTAINING ORGANIC-COMPOUNDS USING CADMIUM-SULFIDE AND THE EFFECT ON CDS PHOTOCORROSION [J].

DAVIS, AP ;

HUANG, CP .

WATER RESEARCH, 1991, 25 (10) :1273-1278

[6] STABILITY OF ZNO PARTICLES IN AQUEOUS SUSPENSIONS UNDER UV ILLUMINATION [J].

DOMENECH, J ;

PRIETO, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (06) :1123-1126

[7] ADSORPTION CHARACTERISTICS OF CU(II) IN THE PRESENCE OF CHELATING-AGENTS [J].

ELLIOTT, HA ;

HUANG, CP .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1979, 70 (01) :29-45

[8] PHOTOCATALYTIC OXIDATION OF SULFUR-DIOXIDE IN AQUEOUS SUSPENSIONS OF ALPHA-FE2O3 [J].

FAUST, BC ;

HOFFMANN, MR ;

BAHNEMANN, DW .

JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (17) :6371-6381

[9] THE COORDINATION CHEMISTRY OF WEATHERING .1. DISSOLUTION KINETICS OF DELTA-AL2O3 AND BEO [J].

FURRER, G ;

STUMM, W .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1986, 50 (09) :1847-1860

[10] EFFECT OF SEMICONDUCTOR ON PHOTOCATALYTIC DECOMPOSITION OF LACTIC-ACID [J].

HARADA, H ;

SAKATA, T ;

UEDA, T .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (06) :1773-1774

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