期刊
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
卷 112, 期 -, 页码 254-264出版社
INST CHEMICAL ENGINEERS
DOI: 10.1016/j.psep.2017.05.011
关键词
Luffa sponge; Activated carbon; Ofloxacin; Adsorption; Kinetics; Isotherm
资金
- Promotional Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province [BS2014HZ019]
- China Postdoctoral Science Foundation [2014M551950]
- Project of Shandong Province Higher Educational Science and Technology Program [J15LE07]
- Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07203004, 2015ZX07203005, 2015ZX07203-007-005]
Ofloxacin (OFL) removal from aqueous solution by carbon activated made from luffa sponge was studied. Scanning electron microscopy showed that the activated carbon (AC) surface was rough. The AC surface area was 834.008 m(2)/g and the average pore diameter was 5.35 nm. AC adsorbed 96% of OFL at a concentration of 30 mg/L, and the maximum amount of OFL adsorbed was about 132 mg/g. The AC adsorption kinetic data fitted a pseudo-second order model (R-2=0.9997) well, indicating chemisorption control. The experimental data at 308 K best fitted the Freundlich isotherm equation (R-2 = 0.9912), indicating multilayer adsorption. A thermodynamic simulation showed that adsorption was spontaneous and exothermic. The optimal conditions for OFL adsorption were pH 6, initial OFL concentration 30 mg/L, temperature 293 K, and AC dosage 0.5 g/L. Fourier -transform infrared spectroscopy showed that phosphorus -containing functional groups, and C=O, C-O-C, and C=C bonds were present on the AC surface. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据