Biosynthesis of SiO2 nanoparticles using extract of Nerium oleander leaves for the removal of tetracycline antibiotic

El Messaoudi, N, El Khomri, M, Ablouh, E, Bouich, A, Lacherai, A, Jada, A, Lima, EC and Sher, F ORCID: https://orcid.org/0000-0003-2890-5912, 2022. Biosynthesis of SiO2 nanoparticles using extract of Nerium oleander leaves for the removal of tetracycline antibiotic. Chemosphere, 287 (4): 132453. ISSN 0045-6535

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Abstract

Tetracycline (TC) is one of the antibiotics that is found in wastewaters. TC is toxic, carcinogenic, and teratogenic. In this study, the tetracycline was removed from water by adsorption using dioxide silicon nanoparticles (SiO2 NPs) biosynthesized from the extract of Nerium oleander leaves. These nanoparticles were characterized using SEM-EDX, BET-BJH, FTIR-ATR, TEM, and XRD. The influences of various factors such as pH solution, SiO2 NPs dose, adsorption process time, initial TC concentration, and ionic strength on adsorption behaviour of TC onto SiO2 NPs were investigated. TC adsorption on SiO2 NPs could be well described in the pseudo-second-order kinetic model and followed the Langmuir isotherm model with a maximum adsorption capacity was 552.48 mg/g. At optimal conditions, the experimental adsorption results indicated that the SiO2 NPs adsorbed 98.62% of TC. The removal of TC using SiO2 NPs was 99.56% at conditions (SiO2 NPs dose = 0.25 g/L, C0 = 25 mg/L, and t = 40 min) based on Box–Behnken design (BBD) combined with response surface methodology (RSM) modelling. Electrostatic interaction governs the adsorption mechanism is attributed. The reusability of SiO2 NPs was tested, and the performance adsorption was 85.36% after the five cycles. The synthesized SiO2 NPs as promising adsorbent has a potential application for antibiotics removal from wastewaters.

Item Type:	Journal article
Publication Title:	Chemosphere
Creators:	El Messaoudi, N., El Khomri, M., Ablouh, E., Bouich, A., Lacherai, A., Jada, A., Lima, E.C. and Sher, F.
Publisher:	Elsevier
Date:	2022
Volume:	287
Number:	4
ISSN:	0045-6535
Identifiers:	Number Type 10.1016/j.chemosphere.2021.132453 DOI S0045653521029258 Publisher Item Identifier 1489941 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	08 Mar 2022 09:15
Last Modified:	02 Oct 2022 03:00
URI:	https://irep.ntu.ac.uk/id/eprint/45808

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