期刊
LANGMUIR
卷 29, 期 12, 页码 3968-3975出版社
AMER CHEMICAL SOC
DOI: 10.1021/la304792m
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资金
- National Natural Science Foundation of China [NSFC51178212]
- Natural Science Foundation of Liaoning Province, China [201102082]
- Liaoning Provincial Department of Education Innovation Team Projects [LT2012001]
- Shenyang Science and Technology Plan [F12-277-1-69]
- Foundation of 211 Project for Innovative Talent Training, Liaoning University
The removal of bisphenol AP (BPAP) by a multiwalled carbon nanotube (MWCNT) was investigated. BPAP, representing typical scenarios for the BPAP-MWCNT interactions, was employed as a probe molecule. It was found that BPAP exhibited great adsorptive affinity to MWCNT, and the adsorption kinetics equilibrium was arrived within 4.0 min following the pseudo-second-order model. The overall rate process was mainly controlled by the external mass transfer. The hydrogen bond, hydrophobic, and pi-pi stacking interactions were dominant factors for the strong adsorption of BPAP, instead of the pH ionic strength and other ionic species in contaminated water. The MWCNT has higher stability within 8 removal-regeneration recycles, and up to 95% of recovery could be obtained by eluting the adsorbed BPAP on MWCNT adsorbent using ethanol/sodium hydrate solution. The results of the experiment on real samples verified the effectiveness for the recovery and removal of BPAP from wastewater samples.
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