Preparation of Modified Zeolites by β-cyclodextrin and Its Sorption Performance of p-nitrophenol
The surface of zeolite was modified by β-cyclodextrin (β-CD) using epichlorohydrin (EPI) as linker to prepare a novel and effective sorbent for removal of p-nitrophenol (p-NP) from aqueous solution.FTIR was used to characterize the surface modification.It was found that the different preparation conditions such as methods of pretreatment, the mole ratio of EPI to β-CD (MEPI∶Mβ-CD),pH and NaOH (%) made an impact on sorption capacity of p-NP on β-CD-modified zeolite (ECDMZ).Given MEPI∶Mβ-CD 3∶1, pH 4.07 and NaOH 6% might be optimum for β-CD to fix on zeolite surfaces.The sorption of p-NP on ECDMZ, cationic β-cyclodextrin (CCD) modified zeolite (CCDMZ) and natural zeolite (NZ) was compared by initial p-NP concentration with the batch sorption experiments.The results showed that the sorption of p-NP on ECDMZ was higher than that of CCDMZ and NZ.
β-cyclodextrin Modification P-nitrophenol Sorption Zeolite
Xiao-hong LI Xue-kui HAO Bao-wei ZHAO
College of Civil Engineering, Lanzhou Institute of Technology, Lanzhou, China School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, China
国际会议
上海
英文
484-488
2018-04-15（万方平台首次上网日期，不代表论文的发表时间）