Fabrication and characterization of amphiphilic magnetic water purification materials for efficient PPCPs removal
Fabrication and characterization of amphiphilic magnetic water purification materials for efficient PPCPs removal
复制标题
用于高效去除 PPCP 的两亲性磁性水净化材料的制备和表征
DOI：
10.1016/j.cej.2018.12.016
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发表时间：
2019
影响因子：
15.1
通讯作者：
Li Aimin
中科院分区：
文献类型：
--
作者：
Yao Zhijian;Jiao Wei;Shao Faming;Song Haiou;Zhang Huaicheng;Zhou Qing;Li Aimin
药品和个人护理产品（PPCPs）是近年来越来越受到关注的新兴污染物。传统的吸附材料在去除PPCP方面表现出较差的效率。在这方面，一系列的磁性颗粒（南大两亲性材料，NDAMs）的制造和其特征在于在这项研究中。这些材料是通过不同单体比例[N-乙烯基-2-吡咯烷酮（NVP）/二乙烯基苯（DVB）]的特殊聚合制备的。表征结果表明，NDAM-40（n（NVP）：n（DVB），6：4）具有最大的比表面积（650 m2/g）、最高的氮含量（1.13%）和最小的接触角（71.5°）。选择17种有代表性的PPCP考察了NDAM-40的吸附性能。结果表明，NDAM-40对NORIT的吸附速率比NORIT快。对于大多数PPCP，NDAM-40的伪二级速率常数比Norit高5倍以上。NDAM-40对大多数PPCPs的吸附量（Qe）是Norit的2 ~ 5倍，NDAM-40在去除效率和可回收性方面具有明显的优势，适用于水质净化。NDAM-40对17种PPCPs的去除率超过80%，而Norit的去除率仅为20%~ 70%。
Pharmaceuticals and personal care products (PPCPs) are emerging contaminants that have gained increasing attention in recent years. Conventional adsorption materials exhibit poor efficiency in removing PPCPs. In this regard, a series of magnetic particles (Nanda Amphiphilic Materials,NDAMs) was fabricated and characterized in this study. These materials were prepared by special polymerization with different monomer proportions [N-vinyl-2-pyrrolidone (NVP)/divinylbenzene, (DVB)]. Characterization results indicated thatNDAM-40(n(NVP):n(DVB), 6:4) was the most effective and possessed the largest BET surface area (650 m2/g) among the nine prepared NDMAs.NDAM-40also possessed the highest nitrogen content (1.13%) and the smallest contact angle (71.5°). Seventeen representative PPCPs were chosen to investigate the adsorption performance of NDAM-40. Norit, a commercial activated carbon, was used for comparison.NDAM-40exhibited faster adsorption rate than Norit. For most PPCPs, the pseudo-second-order rate constants ofNDAM-40were more than five times higher than those of Norit. The amounts (Qe) of most PPCPs adsorbed onNDAM-40were two to five times higher than those on Norit.NDAM-40was applicable to water purification because of its definite advantages in terms of removal efficiency and recyclability. The removal efficiency of 17 PPCPs exceeded 80% when usingNDAM-40, and only 20%–70% when using Norit.