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Adsorption capacity of bentonite


Adsorption is a natural phenomenon in the presence of all solid substances. The phenomenon of certain molecules gathering on the surface of bentonite is called the adsorption of bentonite. This adsorption has been widely used in industry. For example, drilling mud often uses the adsorption characteristics of bentonite minerals to adjust mud parameters for different purposes, such as adding filter loss reducing agents. This is achieved by adsorbing one end of a polymer onto the surface of bentonite particles and dissolving the other end in water, creating an indirect connection between bentonite particles and water molecules. A bridging effect has been formed, reducing the free water in the mud, changing the performance parameters of the mud, and achieving the goal of reducing filtration rate.


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Adsorption capacity of bentonite

Adsorption is a natural phenomenon in the presence of all solid substances. The phenomenon of certain molecules gathering on the surface of bentonite is called the adsorption of bentonite.

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Bentonite is a kind of clay rock, also called montmorillonite clay rock

Bentonite is a kind of clay rock, also called montmorillonite clay rock, which often contains a small amount of illite, kaolinite, halloysite, chlorite, zeolite, quartz, feldspar, calcite, etc; Generally white, light yellow, and light gray, light green, pink, brownish red, brick red, gray black, etc. due to changes in iron content

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Activated clay

Activated clay is an adsorbent made from clay (mainly bentonite) as raw material, which is subjected to inorganic acidification treatment, followed by water rinsing and drying. Its appearance is milky white powder, odorless, tasteless, and has strong adsorption performance. It can adsorb colored and organic substances.

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Bentonite is a non-metallic mineral with montmorillonite as the main mineral component

The chemical composition of montmorillonite is (Al2, Mg3) Si4O10OH2 · nH2O. Because of its special properties, such as swelling, cohesiveness, adsorption, catalysis, thixotropy, suspension and cation exchange, it is widely used in various industrial fields.