- 作者: --
- 作者服務機構: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University
- 中文摘要: A study on the adsorption characteristics of Pb(II) and Cr(III) cations onto C-4-methoxyphenylcalix[4]resorcinarene (CMPCR) in batch and fixed bed column systems has been conducted. CMPCR was produced by one step synthesis from resorcinol, 4-methoxybenzaldehyde, and HCl. The synthesis was carried out at 78 °C for 24 hours and afforded the adsorbent in 85.7% as a 3:2 mixture of C4v:C2v isomer. Most parameters in batch and fixed bed column systems confirm that CMPCR is a good adsorbent for Pb(II) and Cr(III), though Pb(II) adsorption was more favorable than that of Cr(III). The adsorption kinetic of Pb(II) and Cr(III) adsorptions in batch and fixed bed column systems followed a pseudo 2nd order kinetics model. The rate constant of Pb(II) was higher than that of Cr(III) in the batch system, but this result was contrary to the result obtained in a fixed bed column system. Desorption studies to recover the adsorbed Pb(II) and Cr(III) were performed sequentially with distilled water and HCl, and the results showed that the adsorption was dominated by chemisorption.
- 英文摘要: --
- 中文關鍵字: Adsorption; Pb(II); Cr(III); C-4-Methoxyphenylcalix[4]resorcinarene; Batch system; Fixed bed column system.
- 英文關鍵字: --