Adsorptive removal of antibiotic sulfonamide by UiO-66 and ZIF-67 for wastewater treatment

Document Type

Journal Article

Publication Title

Journal of Colloid and Interface Science

Publisher

Elsevier

School

School of Engineering

RAS ID

24657

Comments

Azhar, M. R., Abid, H. R., Periasamy, V., Sun, H., Tade, M. O., & Wang, S. (2017). Adsorptive removal of antibiotic sulfonamide by UiO-66 and ZIF-67 for wastewater treatment. Journal of Colloid and Interface Science, 500, 88-95. https://doi.org/10.1016/j.jcis.2017.04.001

Abstract

Adsorptive removal of a toxic sulfonamide antibiotic, sulfachloropyradazine (SCP), from aqueous solution was studied on several metal organic frameworks, UiO-66 and ZIF-67, for the first time. UiO-66 exhibited a much higher adsorption capacity than ZIF-67, fast kinetics, and easy regeneration for reuse, demonstrating as a promising adsorbent in wastewater treatment processes. The batch adsorption shows an adsorption capacity of SCP at 417 mg/g on UiO-66. The kinetic adsorption of SCP on UiO-66 reached equilibrium just in 10 min and the kinetics fits accurately with a pseudo 2nd order model. A plausible mechanism was proposed based on pH effect, pKa value of the adsorbate and Zeta potential of UiO-66. The high adsorption is mainly contributed to hydrophobicity and π-π interactions along with electrostatic interactions. Thermodynamic studies show the spontaneous adsorption and exothermic process. The easy regeneration and high adsorption capacity confirms structural stability of the robust UiO-66 in wastewater treatment processes, making it suitable for a large scale application.

DOI

10.1016/j.jcis.2017.04.001

Access Rights

subscription content

Link to Full Text

Share

 
COinS