Time Dependence of the Spectra of Methylene Blue−Clay Mineral Suspensions

Langmuir ◽  
2001 ◽  
Vol 17 (17) ◽  
pp. 5150-5155 ◽  
Author(s):  
Katrien Y. Jacobs ◽  
Robert A. Schoonheydt
Keyword(s):  
Methylene Blue ◽  
Time Dependence ◽  
Clay Mineral ◽  
Mineral Suspensions

Technology for Preparation of Hybrid Sorbents Based on Plant Raw Materials and Montmorillonite

2021 ◽  
Vol 316 ◽  
pp. 142-146
Author(s):  
Sergey A. Koksharov ◽  
Olga V. Lepilova ◽  
Svetlana V. Aleeva
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Clay Mineral ◽  
Raw Materials ◽  
Hybrid Nanocomposites ◽  
Zinc Ions ◽  
Arctium Lappa ◽  
Plant Raw Materials ◽  
Mineral Particles

The possibility of preparation of hybrid nanocomposites, based on Burdock Arctium Lappa L biomass, modified with enzymes and montmorillonite, was substantiated. It was founded that bio-modification allowing releasing pectin into the biomass Burdock structure that allow fixing clay mineral particles onto biomass. It was found that the increase of pore spaces occurs at the expense of increasing mesopore spaces to 93 %. It allows increasing the adsorption capacity of hybrid nanocomposites to zinc ions and methylene blue to 52.2 and 166.9 mg g-1 respectively; that is 3.5 and 9 times more than adsorption capacityfor initial plant Burdock

Kinetics, thermodynamics, and equilibrium evaluation of adsorptive removal of methylene blue onto natural illitic clay mineral

2013 ◽  
Vol 52 (1-3) ◽  
pp. 208-218 ◽  
Author(s):  
Duygu Ozdes ◽  
Celal Duran ◽  
Hasan Basri Senturk ◽  
Hilal Avan ◽  
Burcin Bicer
Keyword(s):  
Methylene Blue ◽  
Clay Mineral ◽  
Adsorptive Removal

Structural aspects in the photooxidation and photoreduction of water in clay mineral suspensions

1983 ◽  
Vol 21 (1-3) ◽  
pp. 223-232 ◽  
Author(s):  
H. Nijs ◽  
H. Van Damme ◽  
F. Bergaya ◽  
A. Habti ◽  
J.J. Fripiat
Keyword(s):  
Clay Mineral ◽  
Mineral Suspensions ◽  
Structural Aspects

Clay mineral characterization through the methylene blue test: comparison with other experimental techniques and applications of the method

2004 ◽  
Vol 41 (6) ◽  
pp. 1168-1178 ◽  
Author(s):  
Antonella Chiappone ◽  
Stefania Marello ◽  
Claudio Scavia ◽  
Massimo Setti
Keyword(s):  
Methylene Blue ◽  
Clay Minerals ◽  
Clay Mineral ◽  
Interpretation Criteria ◽  
Methylene Blue Test ◽  
Blue Stain ◽  
Semiquantitative Evaluation ◽  
Mineral Characterization ◽  
American Society ◽  
Sliding Instability

This article illustrates an experimental study of clay mineral characterization conducted with the aid of the methylene blue "stain" test, which yields a semiquantitative evaluation of the activity of a geomaterial based on the type and quantity of clay minerals contained in it. The properties of clay minerals are described briefly, with special regard to their swelling behaviour in the presence of water. The testing method is described with reference to the procedures and interpretation criteria specified in the Association française de Normalization (AFNOR) and American Society for Testing and Materials (ASTM) standards. The results are then presented of a testing campaign conducted to assess the applicability of the methylene blue test for the characterization of geomaterials through a comparison with other testing methods. Additional tests were performed on stratigraphic sequences to identify the levels containing higher proportions of active clay minerals, based on their tendency to swell on coming into contact with water. This characterization technique was applied to marly–arenaceous formations of the Langhe region (Piedmont, Italy), where planar sliding instability phenomena have often been observed following abundant rainfall, and marly–arenaceous formations of Monferrato (another region in southeast Piedmont, Italy), where studies of a geological–structural nature have often revealed traces of postsedimentary tectonic phenomena.Key words: methylene blue stain test, marl, clay mineral, swelling phenomenon, planar sliding instability.

Fluorescence X-ray microscopy on hydrated tributyltin-clay mineral suspensions

2003 ◽  
Vol 104 ◽  
pp. 443-446 ◽  
Author(s):  
U. Neuhäusler ◽  
C. Schmidt ◽  
M. Hoch ◽  
J. Susini
Keyword(s):  
Clay Mineral ◽  
X Ray ◽  
Mineral Suspensions

scholarly journals Comparative Analysis of Palygorskite Samples From Different Occurrences in Guadalupe (Piauí, Brazil)

2020 ◽  
pp. 62-65
Author(s):  
Tainara Cristina de Assis ◽  
Marcelle Cerqueda ◽  
Cristiane Gimenes Souza ◽  
Tammy Caroline Jesus ◽  
Giullia Bertrand Marçano ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Comparative Analysis ◽  
Comparative Study ◽  
Cation Exchange ◽  
Clay Mineral ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Mineralogical Characterization ◽  
Significant Difference ◽  
Ore Dressing

Palygorskite is a clay mineral that has several industrial and environmental applications. Palygorskite main deposits in Brazil are located in the municipality of Guadalupe, Piauí. A comparative study was performed with five samples of palygorskite from different locations through ore dressing and chemical and mineralogical characterization, using the XRD, XRF and methylene blue titration techniques. According to the results, there are significant differences in the samples composition. Among them, the most significant difference was the cation exchange capacity (CEC) value, which ranged from 24.0 to 41.0 meq.100 g-1, followed by the content of some oxides and the crystalline phases present. Despite coming from the same region, the samples contained distinct impurities.

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