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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Biomass-Derived Carbon Sorbents for Cd(II) Removal: Activation and Adsorption Mechanism
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Biomass-Derived Carbon Sorbents for Cd(II) Removal: Activation and Adsorption Mechanism

机译：用于CD（II）去除的生物质衍生的碳吸附剂：活化和吸附机制

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src="http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ascecg/2017/ascecg.2017.5.issue-5/acssuschemeng.7b00061/20170425/images/medium/sc-2017-00061n_0005.gif">Producing an ideal sorbent for removing heavy metals from aqueous solutions is still very challenging. A well-organized microporous structure and nitrogen-rich functional groups in a sorbent are proposed as an excellent platform for Cd(II) removal. Urea phosphate (UP) was used as an activating agent for preparing carbon sorbents derived from biomass. The activating procedure was examined by thermogravimetric analysis (TGA), which indicated that a well-developed microporous structure and nitrogen-rich functional groups were present in the sorbents due to the UP with urea and phosphoric acid molecules in its chemical structure and liberated in the activation process. The mechanisms of Cd(II) removal by sorbents were determined by X-ray photoelectron spectroscopy (XPS), which indicated that porous filtration and chemical reactions (ion exchange, electrostatic attraction and surface complexation) were involved in Cd(II) removal.
机译：src =“http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ suscecg/2017/ socececg.2017.5.issue-5/acssuschemeng.7b00061/20170425/images/medium/sc -2017-00061N_0005.gif“>制造理想的吸附剂，用于从水溶液中除去重金属仍然非常具有挑战性。提出了一种组织良好的微孔结构和吸附剂中的富含氮的官能团，作为去除CD（II）的优异平台。尿素磷酸盐（UP）用作用于制备衍生自生物质的碳吸附剂的活化剂。通过热重分析（TGA）检测激活程序，表明由于其化学结构中的尿素和磷酸分子在吸附剂中存在良好发育的微孔结构和富含富含富氮的官能团。激活过程。通过X射线光电子谱（XPS）测定吸附剂的CD（II）的机制，表明多孔过滤和化学反应（离子交换，静电吸引和表面络合）参与CD（II）去除。

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  • 作者

    Zizhang Guo; Xudong Zhang; Yan Kang; Jian Zhang;

  • 作者单位

    School of Environmental Science and Engineering Shandong Key Laboratory of Water Pollution Control and Resource Reuse Shandong University Jinan 250100 China;

    School of Environmental Science and Engineering Shandong Key Laboratory of Water Pollution Control and Resource Reuse Shandong University Jinan 250100 China;

    School of Environmental Science and Engineering Shandong Key Laboratory of Water Pollution Control and Resource Reuse Shandong University Jinan 250100 China;

    School of Environmental Science and Engineering Shandong Key Laboratory of Water Pollution Control and Resource Reuse Shandong University Jinan 250100 China;

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  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Adsorption mechanisms; Carbon sorbents; Cd(II); Preparation; Urea phosphate;

    机译：吸附机制;碳吸附剂;CD（II）;制备;尿素磷酸盐;

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