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首页> 外文期刊>Applied Surface Science >Changing the adsorption capacity of coal-based honeycomb monoliths for pollutant removal from liquid streams by controlling their porosity
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Changing the adsorption capacity of coal-based honeycomb monoliths for pollutant removal from liquid streams by controlling their porosity

机译：通过控制孔隙率来改变煤基蜂窝状整体材料从液流中去除污染物的吸附能力

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摘要

Coal-based honeycomb monoliths extruded using methods developed for ceramic materials have been used to retain methylene blue and p-nitrophenol from aqueous solutions. The influence of the filters' thermal treatment on their textural properties and performance as adsorbents was examined. Characterization by N_2 physisorption, mercury porosimetry and scanning electron microscopy along with adsorption tests under dynamic conditions suggest that, depending on the pollutant and its initial concentration, it can be more convenient to previously submit the monoliths to a simple carbonization or to an additional activation, with or without preoxidation, as a consequence of their different resulting pore structures. Infrared spectroscopy indicates that their different adsorption behaviour seems not to be related to differences in their surface chemical groups. In addition, axial crushing tests show that the monoliths have an acceptable mechanical resistance for the application investigated.
机译：使用针对陶瓷材料开发的方法挤出的煤基蜂窝整料已用于保留水溶液中的亚甲基蓝和对硝基苯酚。检查了过滤器的热处理对其结构性能和吸附性能的影响。通过N_2物理吸附，水银孔率法和扫描电子显微镜以及在动态条件下的吸附测试进行表征，表明根据污染物及其初始浓度，将整料预先进行简单的碳化或进行额外的活化会更方便，由于其不同的孔结构而导致预氧化或未预氧化。红外光谱表明，它们的不同吸附行为似乎与其表面化学基团的差异无关。此外，轴向压碎测试表明，整料对于所研究的应用具有可接受的机械阻力。

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