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. 2020 Mar 4;5(10):4853–4867. doi: 10.1021/acsomega.9b03607

Table 1. Parameters of the Langmuir Model for the Adsorption of Zn(II), Pb(II), Cd(II), and Hg(II) on PSPa.

metal ion qmax KL R2
Zn(II) 130.54 0.096 0.998
Pb(II) 106.25 0.048 0.995
Cd(II) 91.84 0.034 0.993
Hg(II) 51.38 0.026 0.991
a

Batch conditions: contact time: 3 h; temperature: 298 K; pH: 6.5; adsorbent dose: 25 mg; solution volume: 40 mL.