Abstract
The adsorption capacities and rates of Cu(II) and a commercial reactive dye RR222 on flake- and bead-types of chitosans prepared from three fishery wastes (shrimp, crab, and lobster shells) were compared at 30°C. It was shown that all equilibrium isotherms could be well fitted by the Langmuir equation. The adsorption capacity of Cu(II) on flake- and bead-types of chitosans appeared to be comparable, but the adsorption capacity of RR222 on bead type was much larger than that on flake type by a factor of 2.0-3.8. The rates of dye adsorption on both types of chitosans indicated different controlling mechanisms. In addition, the bead type of chitosans exhibited a greater rate compared to the flake type. (C) 2000 Elsevier Science B.V.
| Original language | English |
|---|---|
| Pages (from-to) | 63-75 |
| Number of pages | 13 |
| Journal | Journal of Hazardous Materials |
| Volume | 73 |
| Issue number | 1 |
| DOIs | |
| State | Published - 13 03 2000 |
| Externally published | Yes |
Keywords
- Bead
- Chitosan
- Comparative adsorption
- Dye
- Fishery wastes
- Flake
- Metal