Comments on “Adsorption of Heavy Metals by Silicon and Aluminum Oxide Surfaces on Clay Minerals”

1991 ◽  
Vol 55 (5) ◽  
pp. 1508-1509 ◽  
Author(s):  
M.B. McBride
Keyword(s):  
Heavy Metals ◽  
Aluminum Oxide ◽  
Clay Minerals ◽  
Oxide Surfaces

Energy dependence of the trapping of uranium atoms by aluminum oxide surfaces

1980 ◽  
Vol 49 (4) ◽  
pp. 195-201 ◽  
Author(s):  
K. G. Libbrecht ◽  
J. E. Griffith ◽  
R. A. Weller ◽  
T. A. Tombrello
Keyword(s):  
Aluminum Oxide ◽  
Energy Dependence ◽  
Oxide Surfaces

Effect of co-existing copper and calcium on the removal of As(V) by reused aluminum oxides

2013 ◽  
Vol 67 (1) ◽  
pp. 187-192
Author(s):  
J. K. Yang ◽  
Y. J. Park ◽  
K. H. Kim ◽  
H. Y. Lee ◽  
K. C. Min ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Binary System ◽  
Aluminum Oxide ◽  
Aqueous Solutions ◽  
Copper Concentration ◽  
Calcium Concentration ◽  
Environmental Fate ◽  
Mine Drainage ◽  
Aluminum Oxides ◽  
Molar Ratios

Among the various heavy metals, arsenic is frequently found in abandoned mine drainage and the environmental fate of arsenic in real aqueous solutions can be highly dependent on the presence of co-existing ions. In this study, removal of arsenate through adsorption on the reused aluminum oxide or through precipitation was investigated in a single and in a binary system as a function of pH and concentration. Different removal behaviors of arsenate were observed in the presence of different cations as well as a variation of the molar ratios of arsenate to cations. Co-operative effects on arsenate removal by precipitation in solution occurred with an increase of copper concentration, while a decrease of arsenate removal resulted in increasing calcium concentration. It was observed that the arsenate removal in the presence of calcium would be highly dependent on the molar ratios of both elements.

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