Bentonite is an absorbent aluminium phyllosilicate clay consisting mostly of montmorillonite. One of the first findings of bentonite was in the Cretaceous Benton Shale near Rock River, Wyoming. The Fort Benton Group, along with others in stratigraphic succession, was named after Fort Benton, Montana in the mid-19th century by Fielding Bradford Meek and F. V. Hayden of the U.S. Geological Survey. The different types of bentonite are each named after the respective dominant element, such as potassi
Feb 13, 2012· The high specific surface of Bentonite gives it a large capacity for both absorption and adsorption. Therefore, it is used in the bleaching and clarification of oils, wines, ciders, beers, etc. Bentonites are importance in industrial processes for purifying water that contains different types of industrial oils and organic contaminants.
Depending on the nature of their genesis, bentonites contain a variety of accessory minerals in addition to montmorillonite. These minerals may include quartz, feldspar, calcite and gypsum. The presence of these minerals can impact the industrial value of a deposit, reducing or increasing its value depending on the application.
Bentonite Clay Applications. For many industrial uses bentonites must be cleared of impurities In the present a sample of Brazilian bentonite from Vitoria da Conquista Bahia was modified by mild acid attack using hydrochloric acid under moderate conditions 90 °C reaction times of 1 6 12 18 and 24 h in close reactor concentration of the aqueous solution of
Applications. USES OF MTI'S INDUSTRIAL SPECIALTY CLAYS. There are literally a thousand uses for MTI's smectite clays: Hectorites, Magnesium Aluminum Silicates and Bentonites. These clays are typically used in water based systems for emulsion stabilizing,
Jan 01, 2013· Mixed-layer I–Sm is the dominant clay mineral in K-bentonites. In general, K-bentonites cannot be used in most industrial applications of bentonites, although some of these clays can be activated with acids and are subsequently used for purification–decolourization of edible oils. XRD results are complemented by thermal analysis.
After modification these bentonites behave as Na bentonites with high swelling and gelling behaviour. Applications. Bentonite is considered as the “mineral” with 1,000 uses. Initially used in the oil and water drilling industry as a mud constituent where it is used to seal borehole walls, remove cuttings and provide lubrication to the
Feb 13, 2012· Bentonites are used in soil mixes to reduce permeability and prevent the escape of gas or leachate generated in the tank. The normal process is to mix the sand with Bentonite, although recently there has been a growing trend in the design of barriers in the use of waterproofing geomembranes and geotextiles.
The sequential use of low-cost adsorbent bentonites and solar photocatalysis to treat winery wastewater has been studied. Three commercial sodium-bentonites (MB-M, MB-G, and MB-P) and one calcium-bentonite (Bengel) were characterized and used in this study. These clay materials were useful to totall
Oct 21, 2012· Bentonites are also used in industry for their beneficial properties asclarifying agents for products such as wines and beers. Many of the"impurities", or sediment, present in these liquids during their manufacture 10. INDUSTRIAL APILICATIONS OF BENTONITE 281are proteins or protein-related compounds.
Uses of Bentonite in Construction. The recognition of bentonite as a vital construction element is still in its latent stage, since a hefty percentage of foundations and other civil engineering activities are still carried out without using bentonite and are incurring much higher expenditure through use of cast iron of steel liners.
D. Barbanti, M. D'Orazio, A. Versari, The use of bentonite as a moisture regulating system 1. Study on some sorption properties of bentonites for their potential use in technology, Journal of Food Engineering, 10.1016/S0260-8774(97)00045-9, 33, 1-2, (193-206), (1997).