Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
School of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
Environ Sci Pollut Res Int. 2019 Apr;26(11):10767-10775. doi: 10.1007/s11356-019-04370-4. Epub 2019 Feb 18.
A nitrosation-reduction method had been applied for the modification of DCE-4 h. It was a kind of non-polar hypercrosslinked resin and synthesized by our group. The functional resin, NR-07, exhibited good adsorption performance for NACs (Nitroaromatics). The adsorption capacity of NR-07 for p-nitrobenzoic acid was almost 1.3 times as much as that of H-103 in 24 h. The adsorption rate of NR-07 calculated by the kinetic function was 1.6 times as much as that of DCE-4h. According to the EA analysis and IR spectrum, the amine and carbonyl group were introduced onto the polymer chains of NR-07. These hydrophilic chemical groups of NR-07 contributed to a higher liquid-film diffusion rate than that of DCE-4h. Besides, the pore volume within 0.46~4.3 nm increased after the modification process, which had a positive effect on the intra-particle diffusion process.
采用亚硝化-还原法对 DCE-4h 进行改性。DCE-4h 是一种非极性超交联树脂，由本课题组合成。功能树脂 NR-07 对 NACs（硝基芳烃）表现出良好的吸附性能。NR-07 对对硝基苯甲酸的吸附量在 24 h 内几乎是 H-103 的 1.3 倍。动力学函数计算的 NR-07 的吸附速率是 DCE-4h 的 1.6 倍。根据 EA 分析和红外光谱，NR-07 的聚合物链上引入了胺基和羰基。NR-07 的这些亲水化学基团有助于提高液膜扩散速率，高于 DCE-4h。此外，改性后 0.46~4.3nm 内的孔体积增加，这对颗粒内扩散过程有积极影响。
