• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Influence of potassium permanganate preoxidation on the interaction of humic acid with cadmium/arsenic
【24h】

Influence of potassium permanganate preoxidation on the interaction of humic acid with cadmium/arsenic

机译：高锰酸盐预氧化对镉/砷相互作用的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Permanganate pre-oxidation could enhance coagulation in water treatment of surface water in the presence of humic acid (HA). The pre-oxidation process affects the characteristics of HA and the species of Cd/As, thereby influencing the diverse associations of HA with trace elements. In the present study, KMnO4 pre-oxidation was found to enhance the coagulation of arsenic in HA aqueous solution by iron chloride, but the opposite result was observed for cadmium removal. This finding may be attributed to the fact that KMnO4 could oxidise the organics, thereby allowing them to be easily adsorbed by the hydrolysis products of the coagulant. KMnO4 may also have influenced the removal of arsenic and cadmium in the process of coagulation. Another reason may be that the manganese dioxide (MnO2) formed in situ could adsorb arsenic and cadmium successively. KMnO4 pre-oxidation was employed in this paper and the changes between the unoxidised and potassium permanganate pre-oxidised systems were investigated. These changes included the interactions of HA with Cd/As ions, the zeta potential value and the spectral analysis, such as specific binding sites on HA and quantifying binding parameters.
机译：高锰酸盐预氧化可以增强腐殖酸（HA）存在水处理水处理水处理的凝固。预氧化过程影响HA的特征和CD / am的种类，从而影响HA的多样性关联与微量元素。在本研究中，发现KMNO4预氧化以通过氯化铁增强砷在HA水溶液中的凝结，但观察到镉去除的相反结果。这一发现可能归因于kmno4可以氧化有机物，从而使它们容易被凝结剂的水解产物吸附。 KMNO4还可能影响凝血过程中的砷和镉的去除。另一个原因可能是原位形成的二氧化锰（MNO2）可以连续吸附砷和镉。本文采用KMNO4预氧化，研究了不催化和高锰酸钾预氧化系统之间的变化。这些变化包括HA与CD /作为离子的相互作用，Zeta电位值和光谱分析，例如HA上的特异性结合位点和量化结合参数。

著录项

  • 来源
    《RSC Advances》 |2016年第4期|共10页
  • 作者

    Kong Yanli; Shen Jimin; Chen Zhonglin; Kang Jing; Fan Leitao; Zhao Xia;

  • 作者单位

    Harbin Inst Technol Sch Municipal &

    Environm Engn State Key Lab Urban Water Resources &

    Environm Harbin 150090 Peoples R China;

    Harbin Inst Technol Sch Municipal &

    Environm Engn State Key Lab Urban Water Resources &

    Environm Harbin 150090 Peoples R China;

    Harbin Inst Technol Sch Municipal &

    Environm Engn State Key Lab Urban Water Resources &

    Environm Harbin 150090 Peoples R China;

    Harbin Inst Technol Sch Municipal &

    Environm Engn State Key Lab Urban Water Resources &

    Environm Harbin 150090 Peoples R China;

    Harbin Inst Technol Sch Municipal &

    Environm Engn State Key Lab Urban Water Resources &

    Environm Harbin 150090 Peoples R China;

    Harbin Inst Technol Sch Municipal &

    Environm Engn State Key Lab Urban Water Resources &

    Environm Harbin 150090 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号