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首页> 外文期刊>Journal of Environmental Science and Health >Mn-doped carbon xerogels as catalyst in the removal of microcystin-LR by water-surface discharge plasma
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Mn-doped carbon xerogels as catalyst in the removal of microcystin-LR by water-surface discharge plasma

机译：锰掺杂的碳干凝胶作为水表面放电等离子体去除微囊藻毒素LR的催化剂

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摘要

Microcystins (MCs), the most common class of cyanobacterial toxins and emerging drinking water contaminants, are harmful to animal and human health. We report on the effective removal of microcystin-LR (MC-LR) using water surface plasma discharge in the presence of carbon xerogels that have been doped with various levels of manganese (Mn). Mn-doped carbon xerogels were prepared by a sol-gel method and characterized via several techniques: N_2 adsorption, X-ray diffraction, X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. The results indicate that different concentrations of dopant change the texture properties, but that they have no obvious influence on the chemical properties or the surface morphologies of Mn-doped carbon xerogels. Water treatment in which MC-LR was removed using water surface plasma discharge was performed. With the addition of carbon xerogels, the removal rate of MC-LR increased from 75.3% to 90.2% after a 6-min treatment. An oxidation-adsorption kinetic model that produces a good fit to the experimental data is proposed.
机译：微囊藻毒素（MCs）是最常见的蓝细菌毒素和新兴的饮用水污染物，对动物和人类健康有害。我们报告了在存在碳干凝胶的情况下使用水表面等离子体放电有效去除微囊藻毒素-LR（MC-LR）的现象，碳干凝胶已掺杂了不同水平的锰（Mn）。锰掺杂的碳干凝胶通过溶胶-凝胶法制备，并通过几种技术进行表征：N_2吸附，X射线衍射，X射线光电子能谱和高分辨率透射电子显微镜。结果表明，不同浓度的掺杂剂会改变织构性质，但对Mn掺杂的碳干凝胶的化学性质或表面形态没有明显的影响。进行了使用水表面等离子体放电去除了MC-LR的水处理。添加碳干凝胶后，处理6分钟后，MC-LR的去除率从75.3％增加到90.2％。提出了一种与实验数据吻合良好的氧化吸附动力学模型。

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  • 来源
    《Journal of Environmental Science and Health》 |2013年第4期|293-299|共7页
  • 作者

    QING XIN; YI ZHANG; KAI B. WU;

  • 作者单位

    College of Electronic Information, Hangzhou Dianzi University, Hangzhou, PR China;

    School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, PR China;

    Hangzhou Wahaha Group Co., Ltd. Hangzhou, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microcystin-LR removal; carbon xerogel; water surface discharge plasma;

    机译：微囊藻毒素-LR去除;碳干凝胶水面放电等离子体;

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