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引用次数: 0
摘要
为了去除废水中的有机染料，研究人员利用铁前驱体和来自杜鹃花叶（RAL）的碱性介质，在原位分离出了一种通过水热碳化（HTC）衍生的新型环保且具有成本效益的吸附剂，命名为 HC-I、HC-II 和 MHC。通过傅立叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、能量色散 X 射线光谱（EDX）、粉末 X 射线衍射（PXRD）和 X 射线光电子能谱（XPS）对这些材料进行了综合表征。在这三种材料中，MHC 在减少废水中的污染物（即结晶紫（CV）、甲基绿（MG）、碱性品红（FB）和亚甲基蓝（MB））方面表现出非常显著的功效。批量吸附实验表明，MHC 性能优越，对 CV、MG、FB 和 MB 的染料去除率分别高达 99.32%、98.496%、92.024% 和 91.496%，超过了 HC-I 和 HC-II 以及其他相关材料。此外，其磁性使其易于从溶液中分离。本研究不仅介绍了有效磁性水炭材料的合成和表征，还强调了吸附材料在去除纺织污水中污染物方面的潜力。
Unveiling the potential of Rhododendron foliage: a novel eco-friendly and cost-effective approach for cationic dye removal using in situ co-hydrothermally synthesized magnetic hydrochar
A novel environmentally friendly and cost-effective adsorbents derived via hydrothermal carbonization (HTC), designated as HC-I, HC-II, and MHC, were isolated in situ using iron precursor and alkaline medium from Rhododendron arboreum leaves (RAL) for the purpose of organic dye removal from wastewater. The materials underwent comprehensive characterization through Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), powder X-ray diffraction (PXRD) and X-ray photoelectron spectroscopy (XPS). Among the three materials, MHC exhibited notably very high efficacy in reducing contaminants, i.e., crystal violet (CV), methyl green (MG), fuchsin basic (FB), and methylene blue (MB) from waste water. Batch adsorption experiments revealed MHC’s superior performance, achieving maximum dye removal rates of 99.32% for CV, 98.496% for MG, 92.024% for FB, and 91.496% for MB, surpassing the capabilities of HC-I, HC-II besides other related materials. Moreover, its magnetic nature facilitated easy separation from the solution. This study not only presents the synthesis and characterization of the effective magnetic hydrochar material, but also underscores the potential of adsorbent materials for pollutant removal from textile effluent.
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