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首页> 外文期刊>Environmental Science and Pollution Research >Leachate phytotoxicity of flue gas desulfurization residues from coal-fired power plant
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Leachate phytotoxicity of flue gas desulfurization residues from coal-fired power plant

机译：燃煤发电厂烟道气脱硫残渣渗滤植物的渗水植物

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Flue gas desulfurization residues (FGDR) are the main solid wastes produced in coal-fired power plants that can be reused as alternative materials for civil and agricultural applications. However, the pollutants contained in the FGDR might contaminate the local environment, hindering their material reuse. In this study, the physical-chemical characteristics, leaching, and phytotoxicity ( Triticum aestivum ) of the material were investigated. The FGDR samples were obtained from three pulverized coal-fired power plants in China. Multivariate statistical analyses were used to consider the contributions of the leaching components to the germination index of wheat seeds in the FGDR leachates. The FGDR contained a high percentage of amorphous mass. The ranges of selected metals and micronutrients in the FGDR are As (31.5–63.0?mg/kg), B (574–3090?mg/kg), Ba (2799–3073?mg/kg), Cr (up to 4.73?mg/kg), Cu (0.29–1.38?mg/kg), Mn (136–370?mg/kg), Ni (9.93–22.9?mg/kg), Pb (1.29–7.29?mg/kg), Sr (886–1706?mg/kg), and Zn (335–458?mg/kg). The leaching toxicity of the FGDR leachates was lower than the regulatory limit of the identification standards for hazardous waste, indicating that the FGDR are non-hazardous materials. Metals, especially Ba, Cu, Fe, and Pb, as well as As and B, in the leachate had inhibitory effects on seed germination than the other constituents. The results in this study showed that the leachate phytotoxicity resulting from FGDR could be evaluated before the utilization of FGDR, giving crucial information for the adaptation of these alternative materials.
机译：烟气脱硫残留物（FGDR）是在燃煤发电厂生产的主要固体废物，可作为民用和农业应用的替代材料重用。然而，FGDR中包含的污染物可能会污染当地环境，阻碍其材料重用。在本研究中，研究了物理化学特性，浸出和植物毒性（植物植物）的材料。 FGDR样品是从中国的三种粉煤发电厂获得的。使用多变量统计分析来考虑浸出组分对FGDR渗滤液中小麦种子的发芽指数的贡献。 FGDR含有高百分比的无定形物质。 FGDR中所选金属和微量营养素的范围如（31.5-63.0？mg / kg），b（574-3090？mg / kg），ba（2799-3073？mg / kg），cr（高达4.73？ Mg / kg），Cu（0.29-1.38×mg / kg），Mn（136-370×mg / kg），Ni（9.93-22.9？mg / kg），Pb（1.29-7.29？mg / kg），sr （886-1706？mg / kg）和Zn（335-458？mg / kg）。 FGDR渗滤液的浸出毒性低于危险废物鉴定标准的调节限制，表明FGDR是非危险的材料。渗滤液中的金属，尤其是Ba，Cu，Fe和Pb，以及b，渗滤液对种子萌发的抑制作用而不是其他成分。该研究的结果表明，在利用FGDR之前，可以评估由FGDR产生的渗滤液植物植物，以适应这些替代材料的关键信息。

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