Jiangsu Key Laboratory of Material Cycle and Pollution Control

Nanjing, China

Jiangsu Key Laboratory of Material Cycle and Pollution Control

Nanjing, China
SEARCH FILTERS
Time filter
Source Type

Zhang Y.,Nanjing Normal University | Zhang Y.,Jiangsu Key Laboratory of Material Cycle and Pollution Control | Wang F.,Nanjing Normal University | Wang F.,Jiangsu Key Laboratory of Material Cycle and Pollution Control | And 6 more authors.
Chinese Journal of Environmental Engineering | Year: 2015

The adsorption characteristics and its adsorption kinetics of ciprofloxacin (CIP) and norfloxacin (NOR) on montmorillonite and diatomite were studied at different oscillating times, solution pH, and concentrations of metal ions. The results indicate that adsorption for CIP and NOR reached equilibrium when adsorption time was 4 h. Strong acidic and strong alkaline are conducive to the adsorption of CIP by montmorillonite. Neutral and alkaline are not conducive to the adsorption of NOR on montmorillonite. The adsorptive quantity of CIP on diatomite decreased when increased pH value. Strong acidic and strong alkaline are conducive to the adsorption of NOR on diatomite. Na+ and K+ have no effects on the adsorption of CIP and NOR when pH≤6. The removal efficiency of CIP and NOR by the adsorbents used was reduced significantly when pH was 10. Ni2+ was conducive to the adsorption of CIP by montmorillonite, but adverse to NOR, and Ni2+ decreased the adsorption of CIP and NOR on diatomite under neutral condition. The analysis of CIP and NOR's adsorption dynamics on clay used shows that the pseudo-second-order model fits the adsorption behavior well. ©, 2015, Science Press. All right reserved.


Zhang J.,Nanjing Normal University | Zhang J.,Jiangsu Key Laboratory of Material Cycle and Pollution Control | Chen Y.,Nanjing Normal University | Chen Y.,Jiangsu Key Laboratory of Material Cycle and Pollution Control | And 4 more authors.
Chinese Journal of Environmental Engineering | Year: 2016

The influences of bentonite dosage, adsorption time, adsorption temperature, oscillating frequency, and solution pH on the adsorption performance of tetracycline hydrochloride onto bentonite were extensively investigated, and an adsorption mechanism developed. The results indicated that tetracycline hydrochloride reached its adsorption equilibrium after 2 h, and that the ideal adsorption temperature was 35℃ with an optimal oscillating frequency of 180 r·min-1. The adsorptive capacity of bentonite for tetracycline hydrochloride increased with increasing solution pH. Analysis of the adsorption dynamics indicated that the pseudo-second-order model fit the adsorption of bentonite quite well. © 2016, Science Press. All right reserved.

Loading Jiangsu Key Laboratory of Material Cycle and Pollution Control collaborators
Loading Jiangsu Key Laboratory of Material Cycle and Pollution Control collaborators