Adsorption Characteristics and Transport Behavior of Cr(VI) in Shallow Aquifers Surrounding a Chromium Ore Processing Residue (COPR) Dumpsite

Figure 2

(a) Adsorption equilibration curves of Cr(VI) adsorption by clay, silty clay, and silt. Cr(VI) solution 1.0 mg/L, aquifers 0.1 g/mL, pH 7-8, and 288 K. (b) Intraparticle diffusion kinetics for adsorption of Cr(VI) by clay, silty clay, and silt. Cr(VI) solution 1.0 mg/L, aquifers 0.1 g/mL, pH 7-8, and 288 K. (c) Typical plots of ln K versus 1/T for adsorption of Cr(VI) by clay, silty clay, and silt. (d) Effect of pH on Cr(VI) adsorption by clay, silty clay, and silt. Cr(VI) solution 1.0 mg/L, aquifers 0.1 g/mL, and 288 K.

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