原位合成钙铝层状双氢氧化物用于渗滤液生化尾水的深度处理。
In-situ synthesis of calcium aluminum layered double hydroxides for advanced treatment of leachate biochemical tail water.
机构信息
School of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai 200444, PR China.
School of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai 200444, PR China.
出版信息
Sci Total Environ. 2020 Jan 20;701:134891. doi: 10.1016/j.scitotenv.2019.134891. Epub 2019 Nov 1.
In the leachate system, Ca-Al-LDH was synthesized in situ by adding calcium aluminum material (AC) and Ca (OH). In the process of synthesis, the removal efficiencies of UV254, COD and TOC in the leachate reached 85.51%, 73.85% and 74.71%, respectively, and the organic matter could be effectively removed. XRD (X-Ray Diffraction) characterization analysis displayed that when AC and Ca (OH) were added at a ratio of 3:1, Ca-Al-LDH could be synthesized efficiently. The effect of this method on the removal of pollutants in leachate was better than that of Ca-Al-LDH. EEM (Excitation Emission Matrix) and GC-MS (Gas Chromatography-Mass Spectrometer) characterization analysis showed that these results could be attributed to the coagulation of calcium aluminum material AC, LDH surface adsorption and ion exchange.
在渗滤液系统中，通过添加钙铝材料（AC）和 Ca(OH)，原位合成 Ca-Al-LDH。在合成过程中，渗滤液中 UV254、COD 和 TOC 的去除效率分别达到 85.51%、73.85%和 74.71%，可以有效去除有机物。XRD（X 射线衍射）特征分析表明，当 AC 和 Ca(OH)以 3:1 的比例添加时，可以有效地合成 Ca-Al-LDH。该方法对渗滤液中污染物的去除效果优于 Ca-Al-LDH。EEM（激发发射矩阵）和 GC-MS（气相色谱-质谱联用）特征分析表明，这些结果归因于钙铝材料 AC 的凝聚、LDH 表面吸附和离子交换。
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