| Autor: |
Dang, Hoang Huy, Nguyen, Duyen Thi Cam, Nguyen, Thuong Thi, Nguyen, Thi Thanh Thuy, Vo, Dai-Viet N., Nguyen, Trinh Duy, Lee, Taeyoon, Tran, Thuan Van |
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| Zdroj: |
Journal of Environmental Chemical Engineering; Feb2021, Vol. 9 Issue 1, pN.PAG-N.PAG, 1p |
| Abstrakt: |
The purification of antibiotic compounds-contaminated wastewaters and effluents exhibits the importance of selecting the treatment technologies feasibly. Adsorptive approaches are of tremendous interests in the environmental field mainly due to their outstanding adaptability, large-scaled possibility and ecofriendly sustainability. Herein, we reported the utilization of zeolitic-imidazolate framework (ZIF-8)-derived nitrogen (N)-self-doped mesoporous carbons (ZPC) as a competitive adsorbent for the removal of tetracycline and ciprofloxacin in aqueous solutions. First, ZIF-8 was produced by microwave-assisted synthesis method (450 W, 140 °C, 15 min). N-containing carbons (ZPC x , x = 600, 800, 1000) could be effortlessly reached out through ZIF-8 thermolysis strategy, which the self-sacrificial precursor/template was pyrolyzed at the respective temperatures (600, 800, and 1000 °C). The existence of residual nitrogen in porous carbon structure was observed. Our findings demonstrate that ZPC800 attained a reasonable surface area (268 m2/g) and the superior experimental adsorption capacities (Q exp. = 270.67–317.50 mg/g). The optimal solution pH range was found from 6 for tetracycline to 8 for ciprofloxacin. The experiment was systematically investigated, which the ANOVA analysis were adopted with the confidence level at p < 0.05. ga1 • Porous carbons (ZPCs) were formed by zeolitic-imidazolate framework-8 pyrolysis. • N-self-doped carbon surface contained functional groups favorable for adsorption. • ZPC800 attained reasonable S BET (268 m2/g), and ultrahigh Q m (772.69–905.14 mg/g). • Effect of pyrolysis temperature, pH, dose, concentration, and time was investigated. [ABSTRACT FROM AUTHOR] |
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