不同碳质材料对新兴污染物吸附性能的研究。
Performance of different carbonaceous materials for emerging pollutants adsorption.
机构信息
Department of Chemical and Environmental Engineering, University of Oviedo, Faculty of Chemistry, Julián Clavería s/n, 33006 Oviedo, Spain.
Department of Chemical and Environmental Engineering, University of Oviedo, Faculty of Chemistry, Julián Clavería s/n, 33006 Oviedo, Spain.
出版信息
Chemosphere. 2015 Jan;119 Suppl:S124-30. doi: 10.1016/j.chemosphere.2014.05.025. Epub 2014 Jun 5.
The adsorption of three representative emerging pollutants over different kinds of carbonaceous adsorbents has been studied in this work. The adsorbates were nalidixic acid (NAL, representative of a pharmaceutical), 1,8-dichlorooctane (DCO, a chloroparaffin) and methyl-phenoxy-ethanol (MPET, a surfactant). Activated carbons, carbon nanofibers, carbon nanotubes and high surface area graphites have been tested as adsorbents. Adsorption isotherms, carried out in a batch system, were fitted using both a Langmuir and a Freundlich model. It was shown that the capacity of adsorption follows the order DCO≫NAL>MPET for all the adsorbents, and among the adsorbents, the external morphology (surface area and mesoporous volume) is the key parameter. The results from thermodynamic analysis show, however, that both morphological and chemical properties of both adsorbates and adsorbents influenced their behavior.
本工作研究了三种代表性的新兴污染物在不同类型碳质吸附剂上的吸附。吸附剂为萘啶酸（NAL，代表一种药物）、1,8-二氯辛烷（DCO，一种氯代石蜡）和甲基苯氧基乙醇（MPET，一种表面活性剂）。已测试了活性炭、碳纳米纤维、碳纳米管和高比表面积石墨作为吸附剂。在间歇体系中进行的吸附等温线使用 Langmuir 和 Freundlich 模型进行拟合。结果表明，对于所有吸附剂，吸附容量的顺序为 DCO≫NAL>MPET，并且在吸附剂中，外部形态（表面积和中孔体积）是关键参数。然而，热力学分析的结果表明，吸附剂和吸附质的形态和化学性质都影响它们的行为。
Zotero 插件