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首页> 外文期刊>Environmental Science & Technology >Outstanding Performance of Magnetically Separable Sulfureted MoO_3/Fe-Ti Spinel for Gaseous Hg~0 Recovery from Smelting Flue Gas: Mechanism and Adsorption Kinetics
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Outstanding Performance of Magnetically Separable Sulfureted MoO_3/Fe-Ti Spinel for Gaseous Hg~0 Recovery from Smelting Flue Gas: Mechanism and Adsorption Kinetics

机译：磁性分离硫化MOO_3 / FE-TI尖晶石的出色性能对于气态HG〜0从熔炼烟气中恢复：机制和吸附动力学

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摘要

To replace the hazardous and complicated Boliden-Norzink technology, the technology of Hg~0 recovery from smelting flue gas by a magnetic and reproducible sulfureted MoO_3/Fe-Ti spinel was employed to keep the produced H_2SO_4 free of Hg. The sulfureted MoO_3/Fe-Ti spinel showed excellent performance in capturing gaseous Hg~0, with an average adsorption rate of 93.3 μg g~(-1) min~(-1) and an adsorption capacity of 66.3 mg g~(-1) at 60 °C, which were much better than those of most of the other reported sorbents. Meanwhile, the sulfureted MoO_3/Fe-Ti spinel exhibited excellent superparamagnetism and magnetization of 19.9 emu g~(-1), which ensured that it could easily be magnetically separated without a specialized precipitator or the molding of pulverous sorbents to monolithic sorbents. To investigate the promotion mechanism of MoO_3 loading on Hg~0 adsorption onto the sulfureted Fe-Ti spinel, the Hg~0 adsorption kinetic parameters of the sulfureted MoO_3/Fe-Ti spinel and sulfureted Fe-Ti spinel, resulting from the fitting of the adsorption breakthrough curves based on the kinetic model, were compared. The promotion of MoO_3 loading was attributed to the remarkable increase in the adsorption sites on the sulfureted Fe-Ti spinel for Hg~0 physical adsorption, which was mainly related to the formation of the MoS_3 layer.
机译：为了取代危险和复杂的Boliden-Norzink技术，采用磁性和可再生的硫酸硫化MOO_3 / Fe-Ti尖晶石从冶炼烟气恢复的HG〜0恢复技术，以保持产生的H_2SO_4。硫化的MOO_3 / Fe-Ti尖晶石在捕获气态Hg〜0时显示出优异的性能，平均吸附速率为93.3μgg〜（-1）min〜（-1）和66.3mg g〜（-1的吸附容量）和吸附容量）在60°C时，比其他大多数报告的吸附剂更好。同时，硫化的MOO_3 / Fe-Ti尖晶石表现出优异的超级分析和19.9 emu g〜（-1）的磁化，确保它可以在没有专用除尘器或粉碎吸附剂的模塑到整体吸附剂的情况下易于磁性分离。探讨MOO_3加载在Hg〜0吸附到硫酸镍尖端上的促进机制，硫酸盐MOO_3 / Fe-Ti尖晶石和硫含量的Fe-Ti尖晶石的Hg〜0吸附动力学参数，由其配合而产生比较了基于动力学模型的吸附突破性曲线。促进MOO_3负载归因于硫含量的Fe-Ti尖晶石上的吸附位点显着增加，用于HG〜0物理吸附，其主要与MOS_3层的形成有关。

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  • 来源
    《Environmental Science & Technology》 |2020年第12期|7659-7668|共10页
  • 作者

    Chang Wang; Xufan Zhang; Jian Mei; Qixing Hu; Shijian Yang;

  • 作者单位

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. 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);
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