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- Title
Removal of nonylphenol from aqueous solutions using 4-aminoantipyrine grafted Bi<sub>2</sub> Te<sub>3</sub> /GO with high-performance liquid chromatography with fluorescence detector.
- Authors
Hazratian, Leila; Mansouri, Nabioallah; Panahi, Homayon Ahmad; Taghavi, Lobat; Moniri, Elham
- Abstract
This novel method, called layer by layer, is composed of alternate layers of graphene oxide and bismuth telluride nanoparticles, and to enhance the adsorption capacity the surface of nanoparticles was modified by 4-aminoantipyrine. A high-performance liquid chromatography with fluorescence detector technique was validated and used for analysis of nonylphenol extracted from environment water samples. Fourier-transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray, thermogravimetric analysis, and X-ray diffraction spectroscopy were applied to characterize the nanoadsorbent. Under the optimum conditions (pH = 5, contact time = 15 min, temperature = 30°C, and initial nonylphenol concentration = 20 mg L–1), the developed technique shown the excellent reusability. Within the 5th cycle, the adsorption potential of recycled nanoadsorbent was restored by nearly 90% and this percentage decreased to 60% in the 8th cycle. The adsorption data fitted well with the Langmuir isotherm model (R2 = 0.9927) and pseudo-second-order kinetic model (R² = 1). The obtained nanoadsorbent possess the highest sorption capacity (43.47 mg g–1). Recoveries, at 1 µg mL–1 concentration level, ranged from 89% to 98% with relative standard deviations lower than 5% (n = 3). The results of nonylphenol removal from the environment samples shown the great applicability of nanoadsorbent for the removal of nonylphenol.
- Subjects
HIGH performance liquid chromatography; NONYLPHENOL; BISMUTH telluride; CHROMATOGRAPHIC detectors; AQUEOUS solutions; GRAPHENE oxide; LANGMUIR isotherms; WATER purification
- Publication
Desalination & Water Treatment, 2022, Vol 269, p141
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2022.28748