Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
Volume 15, Issue 2, Pages 385-394Publisher
SPRINGER
DOI: 10.1007/s13762-017-1388-x
Keywords
Biosorbent; Chitosan; Modification; Cobaltion; Detection; Removal
Categories
Funding
- National Natural Science Foundation of China [51578307]
- National Key Research and Development Program [2016YFC1402507]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13026]
- National ST Major Project [2013ZX06002001]
Ask authors/readers for more resources
In this paper, we modified chitosan beads in order to simultaneously detect and adsorb Co2+ from aqueous solution. Firstly, 4-(5-chloro-2-pyridylazo)-1,3-phenylenediamine (5-Cl-PADAB) was used as selective probe for Co2+ with color changing from yellow to pink, and the UV-Vis spectra showed that the lambda(max) changed from 439 to 504 nm. Then a novel biomaterial was synthesized with 5-Cl-PADAB (metal indicator), chitosan (biosorbent) and EDTA anhydride (cross-linker and chelating agent). The analysis of Fourier transform infrared and energy-dispersive X-ray spectra proved that 5-Cl-PADAB and EDTA were successfully connected to chitosan. The modified chitosan bead was selective probe for Co2+ with a remarkable color change from white to pink, and the UV-Vis spectra showed that the lambda(max) changed from 441 to 459 nm. The adsorption of cobalt ions onto the modified chitosan beads followed pseudo-second-order (R (2) = 0.99) kinetics and the Langmuir isotherm model (R-2 = 0.80). Comparing with chitosan beads, the q(e) of the modified one increased from 2.00 to 7.97 mg/g. The modified chitosan beads are promising biomaterial for simultaneous detection and removal of Co2+ from aqueous solution.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available