Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 22, Pages 11808-11817Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am403491b
Keywords
dual-functional chelating resin; synergistic coremoval; sequential recovery; decomplexing-bridging interaction; copper; tetracycline
Funding
- National Natural Science Foundation of P.R. China [51078178]
- Resources Key Subject of National High Technology Research & Development Project (863 Project) of P.R. China [2009AA06Z315, SQ2009AA06XK1482331]
- State Key Program of National Natural Science [50938004]
- Discipline Crossing Foundation of Nanjing University
Ask authors/readers for more resources
A novel chelating resin (R-AC) bearing dual-functional groups (amino and carboxyl groups) was self-synthesized and it showed superior properties on synergistic coremoval of Cu(II) and tetracycline (TC) to commercial resins (amine, carboxyl, and hydrophobic types), which was deeply investigated by equilibrium and kinetic tests in binary, preloading, and saline systems. The adsorption TC on R-AC was markedly enhanced when coexisted with Cu(II), up to 13 times of that in sole system, whereas Cu(II) uptake seldom decreased in the copresence of TC. decomplexing-bridging, which included [Cu-TC] decomplexing and [R-Cu] bridging for TC, was demonstrated as the leading mechanism for the synergistic coremoval of Cu(II) and TC. Carboxyl groups of R-AC played a dominant role in decomplexing of [Cu-TC] complex and releasing free TC. Cu(II) coordinated with amine groups of R-AC was further proved to participate in bridging interaction with free TC, and the bridging stoichiometric ratio ([NH-Cu]: TC) possibly was 2:1. About 96.9% of TC and 99.3% of Cu could be sequentially recovered with dilute NaOH followed by HCl. Considering stable application for five cycles in simulated and practical wastewater, R-AC shows great potential in green and simple coremoval of antibiotic and heavy metal ions.
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