Research Article

The Improvement of Natural Thai Bentonite Modified with Cationic Surfactants on Hexavalent Chromium Adsorption from an Aqueous Solution

Figure 2

(a) Adsorption capacity of Cr(VI) depending on the surfactant types (CPC and HDTMA) and concentrations (0.25, 0.5, and 1CEC of NTB). (b) Adsorption capacity of Cr(VI) with different MTB weights (0.1–0.3 g).
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(b)