新型深共晶溶剂和 Cu 纳米粒子组成的纳米流体体系增强了硫化氢的去除。
Enhanced removal of hydrogen sulfide using novel nanofluid system composed of deep eutectic solvent and Cu nanoparticles.
机构信息
College of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, PR China.
College of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, PR China.
出版信息
J Hazard Mater. 2021 Mar 5;405:124271. doi: 10.1016/j.jhazmat.2020.124271. Epub 2020 Oct 13.
The HS removal performances of four deep eutectic solvent (DES) based nanofluid (NF) systems were measured using dynamic absorption experiment. The Cu containing NF system is found to be an excellent absorbent for HS removal with a significantly enhanced desulfurization performance compared with DES original solution. Besides, the NF systems have relatively high regeneration performance. The NF systems and Cu nanoparticles before and after absorption as well as after regeneration were characterized by Fourier transform infrared (FT-IR) spectra, scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscope (TEM) and energy dispersive spectrum (EDS). It is found that the ethanolamine, choline cation and sulfur were accumulated on the surface of Cu nanoparticles after absorption, and the bulk elements on the surface were identified as Cu and S after regeneration. The S was existed in the form of CuS, and some sulfur was oxidized to zero-valent sulfur after regeneration.
采用动态吸收实验，测量了四种基于深共晶溶剂（DES）的纳米流体（NF）体系对 HS 的去除性能。结果表明，含 Cu 的 NF 体系是一种优异的 HS 吸收剂，与 DES 原始溶液相比，脱硫性能显著增强。此外，NF 体系还具有较高的再生性能。通过傅里叶变换红外（FT-IR）光谱、扫描电子显微镜（SEM）、X 射线光电子能谱（XPS）、X 射线衍射（XRD）、透射电子显微镜（TEM）和能谱（EDS）对吸收前后以及再生后的 NF 体系和 Cu 纳米粒子进行了表征。结果表明，吸收后乙醇胺、胆碱阳离子和硫积聚在 Cu 纳米粒子表面，再生后表面的体相元素被鉴定为 Cu 和 S。S 以 CuS 的形式存在，部分硫在再生后被氧化为零价硫。
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