Multi-walled carbon nanotubes as sorbent for recovery of endocrine disrupting compound-bisphenol F from wastewater

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• 作者：Lei Zhang ; ^{zhanglei63@126.com} ; Fang Pan ; Xueyan Liu ; Lijun Yang ; Xiaoqing Jiang ; Jichun Yang ; Wen Shi
• 关键词：Bisphenol F ; Multi-walled carbon nanotubes ; Removal ; Recovery
• 刊名：Chemical Engineering Journal
• 出版年：2013
• 出版时间：15 February, 2013
• 年：2013
• 卷：218
• 期：Complete
• 页码：238-246
• 全文大小：516 K

文摘

In this study, the removal and recovery of bisphenol F (BPF) by multi walled carbon nanotubes (MWCNTs) were investigated. MWCNT has shown the great potential as a kind of effective adsorbents for endocrine disrupting compounds (EDCs)-BPF in wastewater treatment. The results indicated that the removal percentages of BPF could reach up to 96.2 % within 4 min under pH 4-10. BPF adsorption kinetics was found to be very fast and the equilibrium was attained within 4.0 min following the pseudo-second-order model with observed rate constants (k) 0.707-3.175 g mg^?1 min^?1 (at varied temperatures). The adsorption mechanisms were the non-electrostatic dispersion interaction, hydrogen bonds and hydrophobic interaction between BPF and MWCNT and the overall rate process mainly governed by the external mass transfer. Most of the co-existing ions which were studied have negligible effect on the sorption BPF by MWCNT. Furthermore, MWCNT was of high stability in eight times removal-regeneration recycles. In summary, MWCNT is an excellent adsorbent which can be used for BPF removal in contaminated water treatment process.