Sonocrystallization of a novel ZIF/zeolite composite adsorbent with high chemical stability for removal of the pharmaceutical pollutant azithromycin from contaminated water

• Published in: Ultrasonics sonochemistry 2023-07, Vol.97, p.106463-106463, Article 106463
• Main Authors: Liu, Zhiming, Bahadoran, Ashkan, Alizadeh, As'ad, Emami, Nafiseh, Al-Musaw, Tariq J., Alawadi, Ahmed Hussien Radie, Aljeboree, Aseel M., Shamsborhan, Mahmoud, Najafipour, Iman, Mousavi, Seyed Erfan, Mosallanezhad, Milad, Toghraie, Davood
• Format: Article
• Language: English
• Subjects: Adsorption; Azithromycin; Langmuir isotherm; Pharmaceutical Contaminant; ZIF-8/Zeolite composite
• ISSN: 1350-4177; 1873-2828
• DOI: 10.1016/j.ultsonch.2023.106463

[Display omitted] •A novel Zeolite/ZIF-8 composite was synthesized by Sonocrystallization method.•The adsorption capacity of the composite ZIF-8/Zeolite was 131 mg/g, respectively.•Investigation of effect of pH and electrostatic interaction mechanism on the Zeolite/ZIF-8 composite.•The adsorbent reaches equilibrium in 60 min at pH = 8.•The recovery of adsorbent show that the removal efficiency was 85%. Water pollution management, reduction, and elimination are critical challenges of the current era that threaten millions of lives. By spreading the coronavirus in December 2019, the use of antibiotics, such as azithromycin increased. This drug was not metabolized, and entered the surface waters. ZIF-8/Zeolit composite was made by the sonochemical method. Furthermore, the effect of pH, the regeneration of adsorbents, kinetics, isotherms, and thermodynamics were attended. The adsorption capacity of zeolite, ZIF-8, and the composite ZIF-8/Zeolite were 22.37, 235.3, and 131 mg/g, respectively. The adsorbent reaches the equilibrium in 60 min, and at pH = 8. The adsorption process was spontaneous, endothermic associated with increased entropy. The results of the experiment were analyzed using Langmuir isotherms and pseudo-second order kinetic models with a R2 of 0.99, and successfully removing the composite by 85% in 10 cycles. It indicated that the maximum amount of drug could be removed with a small amount of composite.