Abstract
Micron-sized monodisperse superparamagnetic polyglycidyl methacrylate (PGMA) particles with functional amino groups were prepared and characterized by SEM, FT-IR and XRD, respectively. The effect of pH value on the adsorption was studied. Their adsorption properties and mechanism for Cr(VI) from wastewater were investigated. In a model system, the adsorption process followed the Langmuir adsorption isotherm, and the maximum sorption capacity of was calculated to be 263.16 mg/g at 308 K and pH 4.5. The adsorption of Cr(VI) capacity reached equilibrium within 15 min and followed pseudo second order kinetics. The adsorption was a spontaneous and endothermic process with ΔH0=9.63 kJ/mol.
| Original language | English |
|---|---|
| Pages (from-to) | 554-560 |
| Number of pages | 7 |
| Journal | Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering |
| Volume | 11 |
| Issue number | 4 |
| Publication status | Published - Aug 2011 |
| Externally published | Yes |
Keywords
- Adsorption
- Amino group
- Cr(VI)
- Monodispersion
- PGMA
- Superparamagnetism
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