Adsorption of benzene vapor on natural silicate clay minerals under different moisture contents and binary mineral mixtures

2020 ◽  
Vol 585 ◽  
pp. 124072 ◽  
Author(s):  
Yu Lu ◽  
Yilian Li ◽  
Danqing Liu ◽  
Yu Ning ◽  
Sen Yang ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Benzene Vapor ◽  
Moisture Contents ◽  
Natural Silicate ◽  
Silicate Clay ◽  
Mineral Mixtures

Isotherms for Aqueous Potassium Adsorption and Characterization of Natural Pyrophyllite

2011 ◽  
Vol 694 ◽  
pp. 682-685
Author(s):  
Hai Feng Chen ◽  
Pei Song Tang ◽  
Min Hong Xu ◽  
Feng Cao
Keyword(s):  
Crystal Structure ◽  
Clay Minerals ◽  
Theoretical Basis ◽  
Adsorption Process ◽  
Potassium Ions ◽  
Adsorption Model ◽  
Natural Minerals ◽  
Silicate Clay ◽  
Size And Morphology

The present investigatory founded an effectiveness of inexpensive and eco-friendly alumina silicate clay minerals, sericitic pyrophyllite (SP), as an adsorbent for the possible application in the absorption of K+. The crystal structure of pyrophyllite, size and morphology were characterized by XRD and SEM. In addition to pyrophyllite, quartz and were also contained in the minerals. The area of lamellar SP was about dozens um2. The results showed that potassium was absorbed on the SP under different pH and concentrations, and the best condition was pH=6, the time of equilibrium absorption = 30 min. It has been found that these natural minerals are effective in removing 55−75% of K+ from 5.0 to 20 mgL-1 KNO3 solutions. The applicability of the Langmuir, Freundlich and Dubinin-Radushkevich adsorption isotherms in each case of potassium was examined separately. We found that the adsorption process was endothermic in the case of SP and the Freundlich adsorption model was to more suitably represent the data. The work could provide the theoretical basis of the study of potassium ions adsorbed by pyrophyllite applying in fertilizer.

scholarly journals Layer Charge Characteristics of 2:1 Silicate Clay Minerals

1994 ◽  
Author(s):  
S. A. Boyd ◽  
W. J. Farmer ◽  
W. F. Jaynes ◽  
G. Lagaly ◽  
D. A. Laird ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Layer Charge ◽  
Silicate Clay

An examination of Jeffries's magnesium ribbon – potassium oxalate method for the removal of free iron oxide in soils

1950 ◽  
Vol 1 (2) ◽  
pp. 156 ◽  
Author(s):  
CH Williams
Keyword(s):  
Iron Oxide ◽  
Clay Minerals ◽  
Hydrogen Sulphide ◽  
Potassium Oxalate ◽  
Free Iron ◽  
Alumino Silicate ◽  
Silicate Clay ◽  
Oxide Minerals

Jeffries's magnesium ribbon – potassium oxalate method for the removal of free iron oxide from soils has been examined and compared with Beck's modification of the method of Drosdoff and Truog. Iron oxide minerals, whether hydrated or unhydrated, were readily dissolved by the nascent hydrogen – oxalate treatment provided they were in a sufficiently finely divided state. Alumino-silicate clay minerals were not attacked to any appreciable extent, and in general the degree of attack on silicate iron did not appear to be very great. However, biotite was quite seriously attacked by the treatment and relatively large errors could be expected in the estimation of free iron oxide in soils containing much of this mineral. The amounts of silica dissolved from soils by Jeffries's treatment were of the same order as those dissolved by Beck's treatment. The nascent hydrogen method was more efficient than the hydrogen sulphide method, particularly for yellow soils and soils high in free iron oxide.

Kinetics of cadmium desorption from fibrous silicate clay minerals: Influence of organic ligands and aging

2007 ◽  
Vol 37 (1-2) ◽  
pp. 175-184 ◽  
Author(s):  
Mehran Shirvani ◽  
Hossein Shariatmadari ◽  
Mahmoud Kalbasi
Keyword(s):  
Clay Minerals ◽  
Organic Ligands ◽  
Silicate Clay ◽  
Kinetics Of
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