The high adsorption capacity of bentonite also is an important property when it comes to treatment and purification of process water, wastewater and effluents. Operating in concert with flocculation agents, bentonite agglomerates filler materials and colloidal constituents into stable flocs that can easily be skimmed after microflotation or sedimentation. This not only benefits our environment but also promotes a cost reduction for our customers.
In this regard, bentonite has been discovered to be a potential adsorbent for softening of water because of its ability to allow adsorption of cationic species such as Pb2+ and Cu2+ and acid dye. Native form of bentonite does not achieve high removal efficiency; therefore, to improve its adsorption capacity, bentonite is typically modified by the addition of other chemicals. Sodium dodecyl benzene sulfonate (SDBS), a surfactant with a negative charge, has potential to attract positive charge ionic component. It has been widely used in detergent due to the presence of alkylbenzene sulfonate which is a major constituent of synthetic detergent.
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