Selenium and Molybdenum Adsorption on Kaolinite Clay Mineral Coated with Hydrous Oxides of Iron and Aluminum

Author(s):  
D. K. Bhumbla ◽  
S. S. Dhaliwal ◽  
K. S. Sajwan ◽  
B. S. Sekhon
Data in Brief ◽  
2020 ◽  
Vol 29 ◽  
pp. 105300 ◽  
Author(s):  
Abdelaziz Elgamouz ◽  
Najib Tijani ◽  
Ihsan Shehadi ◽  
Kamrul Hasan ◽  
Mohamad Al-Farooq Kawam

Heliyon ◽  
2019 ◽  
Vol 5 (12) ◽  
pp. e02714
Author(s):  
Abdelaziz Elgamouz ◽  
Najib Tijani ◽  
Ihsan Shehadi ◽  
Kamrul Hasan ◽  
Mohamad Al-Farooq Kawam

2016 ◽  
Vol 120 (21) ◽  
pp. 11433-11449 ◽  
Author(s):  
Thomas Underwood ◽  
Valentina Erastova ◽  
H. Chris Greenwell

1969 ◽  
Vol 52 (2) ◽  
pp. 148-154
Author(s):  
Raúl Pérez Escolar ◽  
M. A. Lugo López

Catalina and Cialitos soils have different cation exchange capacities, even though their organic-matter and clay contents are similar. X-ray and differential thermal analyses were made on the clay fraction to determine whether this variation in exchange capacity could be attributed to differences in clay mineral composition. The analyses revealed that, in both cases, kaolinite is the predominant clay mineral. However, it was found that, in Cialitos clay the kaolinite is poorly crystallized, whereas crystals are well defined in Catalina clay. Since the poorer the crystallinity, the higher the exchange capacity, this could account for the higher cation exchange capacity of Cialitos clay. Another factor that may also partly account for the difference in cation exchange capacity is the higher content of free iron oxides in Catalina clay. It is well known that free iron oxides block exchange positions in kaolinite clay minerals.


Heliyon ◽  
2019 ◽  
Vol 5 (8) ◽  
pp. e02281 ◽  
Author(s):  
Abdelaziz Elgamouz ◽  
Najib Tijani ◽  
Ihsan Shehadi ◽  
Kamrul Hasan ◽  
Mohamad Al-Farooq Kawam

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.


Sign in / Sign up

Export Citation Format

Share Document