Adsorptive removal of p-arsanilic acid from water using mesoporous zeolitic imidazolate framework-8

作者：Jung Beorn K; Jun Jong Won; Hasan Zubair; Jhung Sung Hwa^*

来源：Chemical Engineering Journal, 2015, 267: 9-15.

DOI：10.1016/j.cej.2014.12.093

• Adsorption
• p-Arsanilic acid
• Mesoporosity
• Removal
• Zeolitic imidazolate frameworks

The adsorptive removal of p-arsanilic acid (ASA) from water using zeolitic imidazolate framework-8 (ZIF-8) materials was investigated for the first time. The adsorption kinetics and adsorbed amount of ASA were improved by introducing mesoporosity into the pristine ZIF-8 structure. The high adsorption capacity of mesoporous ZIF-8 for ASA and facile regeneration of the used adsorbent show that mesoporous ZIF-8 has potential applications in the adsorptive removal of organoarsenic compounds such as ASA. Based on the adsorption results at various pH values and the surface charges on ZIF-8s, the adsorption mechanism of ASA on ZIF-8s can be explained by electrostatic interactions between the positively charged ZIF-8 surface and the anionic forms of ASA.

• 出版日期2015-5-1