Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7044102 | Separation and Purification Technology | 2018 | 8 Pages |
Abstract
With the rapid development of industrialization, removing heavy metal ions of wastewater from the discharge of industrial sewage is a very important topic, because it will severely affect our environment and water ecosystem. In this work, we synthesize two porous adsorbents of ZIF-8 and ZIF-67 and further investigate their performance of removing Pb2+ and Cu2+ from wastewater. Results indicate that saturated adsorption capacities of ZIF-8 and ZIF-67 for Pb2+ reach 1119.80 and 1348.42â¯mg/g, while they are 454.72 and 617.51â¯mg/g for Cu2+, respectively, which are greatly higher than almost all other porous materials. If we use the excessive adsorbents to treat wastewater, more than 99.4% Pb2+ and 97.4% Cu2+ can be removed by ZIF-8 and ZIF-67 adsorbents. Moreover, the two adsorbents also show fast adsorption kinetics, and only need several decade minutes to reach adsorption equilibrium. These features indicate that ZIF-8 and ZIF-67 are excellent candidates for removal of heavy metal ions from wastewater.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Yan Huang, Xiaofei Zeng, Lingling Guo, Jianhui Lan, Liangliang Zhang, Dapeng Cao,