Metal and Oxyanion Sorption on Naturally Occurring Oxide and Clay Mineral Surfaces

2005 ◽  
pp. 3-36 ◽  
Author(s):  
Donald Sparks
Author(s):  
W. W. Barker ◽  
W. E. Rigsby ◽  
V. J. Hurst ◽  
W. J. Humphreys

Experimental clay mineral-organic molecule complexes long have been known and some of them have been extensively studied by X-ray diffraction methods. The organic molecules are adsorbed onto the surfaces of the clay minerals, or intercalated between the silicate layers. Natural organo-clays also are widely recognized but generally have not been well characterized. Widely used techniques for clay mineral identification involve treatment of the sample with H2 O2 or other oxidant to destroy any associated organics. This generally simplifies and intensifies the XRD pattern of the clay residue, but helps little with the characterization of the original organoclay. Adequate techniques for the direct observation of synthetic and naturally occurring organoclays are yet to be developed.


Soil Science ◽  
1997 ◽  
Vol 162 (11) ◽  
pp. 826-832 ◽  
Author(s):  
David A. Laird

2016 ◽  
Vol 3 (1) ◽  
pp. 28-44 ◽  
Author(s):  
Liang Yu ◽  
Huixian Wang ◽  
Yatao Zhang ◽  
Bin Zhang ◽  
Jindun Liu

Halloysite nanotubes (HNTs) are naturally occurring clay mineral with nanotubular structures and have found increasing potential applications in industrial fields.


2021 ◽  
Author(s):  
◽  
Roderick John Furkert

<p>Any reaction that occurs between two substances will depend initially on the reaction, or lack of reaction, of the various atoms or molecules that are on the surface of the substances being brought into contact with each other. When reactions involving substances of very small particle size are investigated the actual detailed composition of the surface layer of these particles become of paramount importance.</p>


2020 ◽  
Vol 22 (6) ◽  
pp. 1355-1367 ◽  
Author(s):  
Natacha Van Groeningen ◽  
Laurel K. ThomasArrigo ◽  
James M. Byrne ◽  
Andreas Kappler ◽  
Iso Christl ◽  
...  

Under anoxic conditions, clay minerals sorb dissolved Fe(ii) predominantly by forming surface precipitates, which transform into Fe(iii)-phases upon aeration.


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