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. Author manuscript; available in PMC: 2018 Apr 12.
Published in final edited form as: Environ Sci Technol. 2015 Jun 12;49(13):7784–7792. doi: 10.1021/acs.est.5b01026

Figure 5.

Figure 5

Adsorption isotherms of m-DNB on Na+-, K+- and Cs+-montmorillonite. qe is the amount of m-DNB adsorbed on montmorillonite clay mineral (mmol kg−1), and Ce is the equilibrium concentration of m-DNB (mM). Experimental conditions: 10 mg montmorillonite, m-DNB with initial concentrations ranging from 0.005 to 0.2 mM, reaction medium 10 mL phosphate buffer (5 mM, pH = 7.3).