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  • Title: Novel regenerable sorbent based on Zr-Mn binary metal oxides for flue gas mercury retention and recovery.
    Author: Xie J, Qu Z, Yan N, Yang S, Chen W, Hu L, Huang W, Liu P.
    Journal: J Hazard Mater; 2013 Oct 15; 261():206-13. PubMed ID: 23933289.
    Abstract:
    To capture and recover mercury from coal-fired flue gas, a series of novel regenerable sorbents based on Zr-Mn binary metal oxides were prepared and employed at a relatively low temperature. PXRD, TEM, TPR, XPS, and N2-adsorption methods were employed to characterize the sorbents. The Hg(0) adsorption performance of the sorbents was tested, and the effects of the main operation parameters and the gas components on the adsorption were investigated. Zr significantly improved the sorbent's mercury capacity, which was nearly 5mg/g for Zr0.5Mn0.5Oy. Furthermore, the spent sorbent could be regenerated by heating to 350°C, and the highly concentrated elemental mercury released could be facilely recycled. Therefore, a much greener process for mercury capture and recovery could be anticipated based on this regenerable sorbent.
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