Abstract

Adsorption of Fe(III) ions and Fe(III) complexes on selected adsorbents in aqueous solutions is reported. Fe(III) complexes with ribose, lactic acid, glycine and valine were prepared, and FTIR spectra validated their formation. The structural data of scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis also confirm the structure of the iron-ligand complexes and their adsorption on selected ligands (celite, cellulose, bentonite, activated carbon, carbon nanoparticles). Fe(III) adsorption from Fe−ligand complexes (FeLCs) on adsorbents in an aqueous solution was higher than the adsorption of metal ions alone. Compared with non-carbon adsorbents, carbon adsorbents carbon nano particles (CNP) and activated carbon (AC) showed higher adsorption of FeLCs. The atomic absorption spectroscopy (AAS) studies showed that the Fe−valine complex demonstrated the maximum adsorption (1719.18 ppm) compared to other samples. energy dispersive X-ray spectroscopy (EDS) studies confirmed a 2.16-fold increase in Fe(III)−Val complex adsorption compared with the pure metal ions. The current strategy provides an efficient proto-type to remediate Fe(III) contaminated water and to fortify Fe(III) through diet.

中文翻译：

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使用天然生物有机配体作为选定吸附剂上的促进剂吸附 Fe(III) 的新方法

摘要

据报道，水溶液中选定的吸附剂对 Fe(III) 离子和 Fe(III) 络合物的吸附。制备了 Fe(III) 与核糖、乳酸、甘氨酸和缬氨酸的配合物，并用 FTIR 光谱验证了它们的形成。扫描电子显微镜 (SEM) 和 X 射线衍射 (XRD) 分析的结构数据也证实了铁-配体复合物的结构及其在选定配体（硅藻土、纤维素、膨润土、活性炭、碳纳米颗粒）上的吸附。水溶液中吸附剂上的 Fe-配体配合物 (FeLC) 对 Fe(III) 的吸附量高于单独金属离子的吸附量。与非碳吸附剂相比，碳吸附剂碳纳米颗粒（CNP）和活性炭（AC）对FeLCs表现出更高的吸附力。原子吸收光谱 (AAS) 研究表明，与其他样品相比，Fe−缬氨酸复合物表现出最大吸附量 (1719.18 ppm)。能量色散 X 射线光谱 (EDS) 研究证实，与纯金属离子相比，Fe(III)−Val 复合物的吸附量增加了 2.16 倍。目前的策略提供了一种有效的原型来修复 Fe(III) 污染的水并通过饮食强化 Fe(III)。