Utilization of calcium-based and aluminum-based materials for the treatment of stabilized landfill leachate: a comparative study

作者：Xu, Yunfeng; Zhang, Liang; Pan, Yaxuan; Liu, Yangyang; Wu, Jianzhong; Zhu, Mingying; Sun, Ying^*; Qian, Guangren^*

来源：Environmental Science and Pollution Research, 2017, 24(34): 26821-26828.

DOI：10.1007/s11356-017-0264-z

• Leachate
• Organic matters
• CaAl-LDHs
• Calcium-based materials
• Aluminum-based materials
• Removal

This study explored the efficiencies and mechanisms of refractory organic matters removal in the stabilized landfill leachate by adding different reagents. Calcium-based and aluminum-basedmaterials were added into the leachate as comparing experiments. XRD, FTIR, and EEM were adopted to analyze the solid products and leachate. As a result, the in situ synthesized CaAl-LDHs were more beneficial for refractory organic matters removal, especially for benzodiazepines. When CaAl-LDHs were formed, the removal efficiencies of COD, UV254, and TOC were best and achieved 58.48, 81.22, and 71.30%, respectively. For fluorescent substances, humic acid-like and fulvic acid-like compounds were efficiently removed by CaAl-LDHs. In particular, CaAl-LDHs had selective removal effects on fulvic acid-like compounds, which were characteristic of small molecular weight and major carboxyl groups.

• 出版日期2017-12
• 单位上海大学