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- Title
Study of 2,4-D herbicide removal from aqueous solutions using synthesized TiO<sub>2</sub>-zeolite nanocomposite by laser irradiation.
- Authors
Abdollah, Fatemeh; Borghei, Seyed Mehdi; Moniri, Elham; Kimiagar, Salimeh; Panahi, Homayon Ahmad
- Abstract
TiO2/Zeolite composite was synthesized through a sol-gel approach continuously. TiO2/Zeolite composite was exposed to laser irradiation until conversion to TiO2/Zeolite nanocomposite (T/Z) and T/Z was modified with m-phenylenediamine (N-T/Z). The resulting N-T/Z was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray, dynamic light scattering, and thermogravimetric analysis. The average range of particle size of the N-T/Z was about ~140 nm. The N-T/Z product was evaluated as a sorbent for removing 2,4-D from aqueous solutions. The adsorption operational parameters were investigated in a batch system. The complete removal of 2,4-D was investigated under optimum conditions in real samples by high-performance liquid chromatography. A 2,4-D removal efficiency of 72%-99% was obtained from the river, well, and agricultural drainage water samples. The pseudo-second-order kinetic model fitted the 2,4-D removal, and equilibrium data well followed the Langmuir model. The maximum adsorption capacity of the obtained sorbent was qmax = 4.914 mg g-1. The product had excellent stability for reprocessing in several runs without losing adsorptivity significantly.
- Subjects
NANOCOMPOSITE materials; AQUEOUS solutions; ZEOLITES; FOURIER transform infrared spectroscopy; HIGH performance liquid chromatography; HERBICIDES; PHENYLENEDIAMINES
- Publication
Desalination & Water Treatment, 2020, Vol 196, p228
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2020.26042