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主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
改性火山岩处理高铁锰矿井水机理分析
  • Title

    Mechanism Analysis on High lron and Manganese Content Mine Water Treatment with Modified Volcanic Rocks

  • 作者

    王春荣胡建龙何绪文于承豪刘晋羽

  • 单位

    中国矿业大学(北京)化学与环境工程学院

  • 摘要
    以火山岩滤料为载体,制备了水合二氧化锰改性滤料用于去除矿井水的铁锰离子。在滤速为7.0 m/h,连续54 h的过滤周期内,改性火山岩对锰离子的去除率达94.8%~99.3%。结合X射线衍射(XRD),扫描电镜-能谱(SEM-EDS)等表征手段,确认火山岩改性后,表面覆盖的水合二氧化锰层具有丰富的表面羟基(以—Mn—OH表示),根据表面配合模式,其羟基中氢能与水中的Mn2+和Fe2+发生表面络合反应,最终Mn2+和Fe2+被表面羟基吸附并交换出氢,从而实现对铁锰离子的去除。
  • Abstract
    With the volcanic rocks filter material as the carriers, hydrated manganese dioxide modified filter material was prepared to the iron and manganese ion r emoval from the mine water.When the filtration speed was 7.0 m/h and during a continued 54 h filtration period, the manganese ion removal rate with modified volcanic rocks would be 94.8%99.3%.The X-ray diffraction, scanning electron microscopy-energy spectrum and other means combined verified that after the volcanic rocks modif ied, a hydrated manganese dioxide layer covered on the surface of the modified volcanic rocks would have rich surface hydroxyl (- -Mn一_OH) .According to the surface f itting mode, H in hydroxy| could have a surface complexation reaction with Mn2+ and Fe2+ in mine water, finally Mn2+ and Fe2+ could be absorbed by surface hydroxyl and the hydrogen could be replaced.Therefore, the removal of the iron and manganese ion could be realized.
  • 关键词

    改性火山岩矿井水除锰机理除铁机理

  • KeyWords

    modified volcanic rocks;mine water;mechanism of manganese removal;mechanism of iron removal;

  • 基金项目(Foundation)
    国家高技术研究发展计划(863计划)资助项目(2008AA06Z305);
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