Removal of Tetracycline from Aqueous Solution Using Nanocomposite Based on Polyanion-Modified Laterite Material

Autor: Thi Hau Vu, Thi Mai Viet Ngo, Thi Tu Anh Duong, Thi Hien Lan Nguyen, Xuan Truong Mai, Thi Hong Nguyet Pham, Thi Phuong Le, Thi Hue Tran
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Analytical Methods in Chemistry, Vol 2020 (2020)
Druh dokumentu: article
ISSN: 2090-8865
2090-8873
DOI: 10.1155/2020/6623511
Popis: This work investigated the removal of antibiotic tetracycline (TC) from wastewater using nanocomposite material based on laterite modified with polyanion, polystyrene sulfonate (PSS). The effective factors influenced on the TC removal using nanocomposite PSS-modified laterite (NCPML) were optimized and found to be pH 4, solid-liquid ratio 5 mg/mL, and contact time 180 min. The highest removal of TC reached about 88% under the optimum adsorption conditions. The adsorption isotherm and kinetics of TC adsorption onto NCPML were in good agreement with the Langmuir and pseudo-second-order models, respectively. The characteristics of the NCPML material before and after TC adsorption were examined by zeta (ζ) potential measurements, Brunauer–Emmett–Teller (BET) method, and Fourier transform infrared spectroscopy (FT-IR). The TC adsorption onto NCPML was induced by electrostatic interaction, hydrogen bonding, and diffusion interaction. The TC removal from wastewater was approximately 94% while efficiency still reached 66% after five regenerations. Our research reveals that NCPML is a high-performance adsorbent for TC removal from wastewater.
Databáze: Directory of Open Access Journals
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