Construction of polyurethane/chitosan hybrid foam for dihydroxylammonium 5, 5′-bistetrazole-1, 1′-diolate removal
文献类型： 外文期刊
作者： Huang, Rui 1 ; Lin, Lizhi 2 ; Zhang, Jinghua 1 ; Jin, Shaohua 1 ; Tian, Qingquan 3 ; Yang, Ziming 4 ; Li, Puwang 4 ; Chen, Yu 1 ;
作者机构： 1.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
2.Beijing Inst Technol, Sch Med Technol, Beijing 100081, Peoples R China
3.Hangzhou Chem Ind Res Inst, Hangzhou 310014, Zhejiang, Peoples R China
4.Chinese Acad Trop Agr Sci, South Subtrop Crop Res Inst, Zhanjiang 524091, Guangdong, Peoples R China
5.Capital Univ Phys Educ & Sports, Sports & Med Integrat Res Ctr SMIRC, Beijing 100191, Peoples R China
关键词： Polyurethane; Chitosan; TKX-50; Adsorption; Wastewater treatment
期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：9.0； 五年影响因子：8.5 ）
ISSN： 1383-5866
年卷期： 2025 年 376 卷
页码：
收录情况： SCI
摘要： Dihydroxylammonium 5, 5 '-bistetrazole-1, 1 '-diolate (TKX-50) is a new high-energy and insensitive material with broad application prospects. However, the discharge of TKX-50 wastewater from its production and applications not only causes the waste of high-value explosives, but also pollutes the environment. The traditional used adsorbents are poor adsorption efficiencies and recyclability performance in pratical applications. In this study, we successfully prepared a porous polyurethane/chitosan hybrid foam (PUF) with chitosan (CTS) as the active adsorption component by the semi-prepolymerization/acidification method. The compressive strength of the PUF can reach up to 8.83 kPa, and the static adsorption capacity of TKX-50 can reach 39.32 mg/g. The TKX-50 adsorption process and mechanism were further studied by the adsorption kinetics, isotherm and thermodynamics. The adsorbed TKX-50 was effectively recovered by NaOH solution, with a desorption rate exceeding 94 %. The dynamic adsorption investigation indicates that the PUF is suitable for industrial continuous flow wastewater treatment process in practical engineering. In all, our work has explored a new construction strategy of chitosan composited recyclable polyurethane hybrid foam materials with high TKX-50 adsorption efficiencies, and the obtained hybrid foam exhibits great application potentials for the treatment of TKX-50-containing wastewaters.
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