文献类型：期刊文献

英文题名：Organic-inorganic hybridized zeolite by polycardanol for ammonia-nitrogen adsorption

作者：Gao, Chuan[1];Yu, Ruobing[1];Huang, Jian[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Fudan Univ, Dept Environm Sci & Engn, Shanghai, Peoples R China

年份：2021

卷号：42

期号：3

起止页码：319

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20194607683048);WOS:【SCI-EXPANDED(收录号:WOS:000612434800001)】；

语种：英文

外文关键词：Zeolite; ammonia nitrogen; polycardanol; adsorption

摘要：In order to remove the ammonia nitrogen in wastewater, a novel organic-inorganic hybridized zeolite was prepared. Polycardanol (a long-chain acid) was synthesized at first, and the organic-inorganic hybridized zeolite was obtained by the reaction between the zeolite and polycardanol, which results in long-chain branched zeolite (Z-P). The adsorption of Z-P for ammonia-nitrogen in simulated water was also investigated. Z-P was characterized with scanning electron microscopy/energy dispersive spectrometer (SEM-EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR). Compared with zeolite, the surface of Z-P is relatively rough and the density (1.1 g/cm(3)) is low. Z-P has higher adsorption capacity (13.56 mg/g) for ammonia nitrogen than zeolite (3.94 mg/g), which is due to the multi-adsorption mechanisms including ion exchange and chemical precipitation. Langmuir isotherm and Pseudo-second order model could describe the adsorption process of Z-P, indicating that the adsorption is a single-layer homogeneous adsorption process. The ammonia-nitrogen adsorption process of Z-P is spontaneous and endothermic.