首页> 中文期刊> 《化学科学与工程前沿:英文版》 >Synthesis of zeolite Na-P1 from coal fly ash produced by gasification and its application as adsorbent for removal of Cr(Ⅵ) from water

Synthesis of zeolite Na-P1 from coal fly ash produced by gasification and its application as adsorbent for removal of Cr(Ⅵ) from water

         

摘要

The coal fly ash produced by gasification is estimated to be over 80 million ton per year in China by 2021.It has mainly been disposed as solid waste by landfill.There is lack of study focused on its utilization.In this paper,the coal fly ash produced by gasification was at first analyzed and then applied to synthesize zeolite as an adsorbent.The effects of synthesis conditions on the cation exchange capacity(CEC)of zeolite were investigated.The results from X-ray diffraction and scanning electron microscope indicated that the crystallinity of the synthesized zeolite is the most important factor to affect the CEC.When the synthesized zeolite with the highest CEC(275.5 meq/100 g)was used for the adsorption of Cr(Ⅵ) from aqueous solution,the maximum adsorption capacity for Cr(Ⅵ) was found to be 17.924 mg/g.The effects of pH,contact time and initial concentration on the adsorption of Cr(Ⅵ) were also investigated.The adsorption kinetics and isotherms can be well described by the pseudo-secondorder model and Langmuir isotherm model,respectively.

著录项

  • 来源
    《化学科学与工程前沿:英文版》 |2021年第3期|P.518-527|共10页
  • 作者单位

    National Engineering Research Center of Coal Preparation and Purification China University of Mining and Technology Xuzhou 221116 ChinaSchool of Chemistry Monash University Victoria 3800 Australia;

    School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China;

    School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China;

    School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China;

    School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China;

    School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China;

    Department of Chemical Engineering Monash University Victoria 3800 Australia;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理化学(理论化学)、化学物理学;
  • 关键词

    coal fly ash; gasification; zeolite; Na-P1; chromium(Ⅵ);

    机译:煤粉煤灰;气化;沸石;Na-P1;铬(ⅵ);
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