文献类型：期刊文献

英文题名：Adsorption of Ciprofloxacin on to Bamboo Charcoal: Effects of pH, Salinity, Cations, and Phosphate

作者：Wang, Li[1] Chen, Guangcai[1] Ling, Chen[2] Zhang, Jianfeng[1] Szerlag, Kathryn[3]

通信作者：Chen, GC[1]|[a000551c9abd7c3960d59]陈光才;

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China;[2]Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;[3]Univ Massachuetts, Coll Nat Sci, Amherst, MA 01003 USA

年份：2017

卷号：36

期号：4

起止页码：1108-1115

外文期刊名：ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY

收录：;EI(收录号：20171003415562);Scopus(收录号：2-s2.0-85014200563);WOS:【SCI-EXPANDED(收录号:WOS:000405735400016)】；

基金：This work was funded by the National Natural Science Foundation of China (21207157) and the Research Institute of Subtropical Forestry, Chinese Academy of Forestry (RISF 2013001), and Hangzhou Science and Technology Committee (20132231E).

语种：英文

外文关键词：adsorption; ciprofloxacin; bamboo charcoal; pH; metal cations; salinity; phosphate

摘要：The adsorption of ciprofloxacin (CIP) by bamboo charcoal in aqueous solution was explored under varying pH, salinity, metal cations, and phosphate. The adsorption kinetics and adsorption isotherms were depicted well by the pseudo-second-order and Langmuir models, respectively. The maximum adsorption capacity (q(m)) was 36.02 mg g(-1) according to the Langmuir model. The CIP adsorption increased with increasing pH and reached the maximum adsorption amount at pH 5.5, then decreased with increasing pH. It indicated that cation exchange played an important role in CIP adsorption. The effects of metal cations (0.2 mM Cu2+, Zn2+, Cd2+, Pb2+, and Al3+)on the CIP adsorption are both pH and cation species dependent. Al3+ greatly increased the CIP adsorption on to bamboo charcoal at pH 3.5, 5.5, and 9.5 (p < 0.05). Pb2+ inhibited the CIP adsorption, while Cu2+ significantly enhanced the CIP adsorption at pH 3.5 and 5.5, but both showed insignificant effects at pH 9.5. The presence of phosphate enhanced the CIP adsorption at pH 3.5 and 5.5, while slightly inhibiting the CIP adsorption at pH 9.5. The adsorption mechanisms of CIP on to bamboo charcoal were ascribed to cation exchange, hydrogen bonding and metal bridging. These results suggest that bamboo charcoal has great potential to be used as an efficient material in CIP removal from aquatic environments. (C) 2017 American Institute of Chemical Engineers