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首页> 外文期刊>Journal of Hazardous Materials >Synergistic utilization of red mud for flue-gas desulfurization and fly ash-based geopolymer preparation
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Synergistic utilization of red mud for flue-gas desulfurization and fly ash-based geopolymer preparation

机译：协同利用赤泥进行烟气脱硫和粉煤灰基聚合物的制备

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摘要

As an industrial waste characterized by huge volume and high alkalinity, red mud has become a serious environmental problem. The reuse of red mud has been explored in previous studies, including as building materials and for soil and waste water treatment. In this study, an innovation was made for the reuse of red mud to create a synergistic effect. Red mud was first used in flue gas desulfurization (FGD), and then the desulfurized red mud was again reused to make a geopolymer material. By using one type of original red mud and three types of fly ash, this study revealed that with high alkalinity and desulfurization capacity, the red mud could serve as an excellent FGD sorbent. After FGD, the sodium sulfate in the desulfurized red mud acted as a chemical activator for geopolymer made with class C fly ash. A 25% increase in strength was observed between the geopolymers with the red mud after FGD and with the original one. There are no significant benefits of FGD on the class F fly ash-based geopolymers and further study is required.
机译：作为具有大量和高碱度的工业废物，赤泥已成为严重的环境问题。在以前的研究中已经探索了赤泥的再利用，包括用作建筑材料以及用于土壤和废水处理。在这项研究中，对赤泥的再利用进行了创新，以产生协同效应。首先将赤泥用于烟道气脱硫（FGD），然后将脱硫的赤泥再次用于制造地聚合物材料。通过使用一种原始的赤泥和三种类型的粉煤灰，该研究表明，具有高碱度和脱硫能力的赤泥可以用作优良的烟气脱硫吸附剂。经过烟气脱硫后，脱硫赤泥中的硫酸钠充当了用C级粉煤灰制备的地聚合物的化学活化剂。观察到，在FGD之后，带有赤泥的土聚合物与原始聚合物之间的强度增加了25％。 FGD对F级粉煤灰基地质聚合物没有明显的好处，需要进一步研究。

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  • 来源
    《Journal of Hazardous Materials》 |2019年第5期|503-511|共9页
  • 作者

    Nie Qingke; Hu Wei; Huang Baoshan; Shu Xiang; He Qiang;

  • 作者单位

    Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China|Hebei Res Inst Construct & Geotech Invest Co Ltd, Shijiazhuang 050031, Hebei, Peoples R China|Technol Ctr Geotech Engn Hebei Prov, Shijiazhuang 050031, Hebei, Peoples R China;

    Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA;

    Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA|Tongji Univ, Sch Transportat Engn, Shanghai, Peoples R China;

    Hebei Res Inst Construct & Geotech Invest Co Ltd, Shijiazhuang 050031, Hebei, Peoples R China|Technol Ctr Geotech Engn Hebei Prov, Shijiazhuang 050031, Hebei, Peoples R China;

    Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA;

  • 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

    Red mud; Geopolymer; Flue gas desulfurization; Class C fly ash; Class F fly ash;

    机译：赤泥;地聚合物;烟气脱硫;C级粉煤灰;F级粉煤灰;

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