Acetaminophen removal using green synthesized iron nanoparticles with a fresh water microalga, Planktochlorella nurekis

Autor: N P Sreekanth, Manoj P. Rayaroth, Neethu Cyril, C T Sunila, C. S. Praveen Kumar, V Ambily, V. P. Sylas
Rok vydání: 2021
Předmět:
Zdroj: Nano-Structures & Nano-Objects. 26:100700
ISSN: 2352-507X
DOI: 10.1016/j.nanoso.2021.100700
Popis: In this study, the iron nanoparticles were synthesizedusing a decoction of locally isolated microalga, Planktochlorella nurekis The characterization of phyco-synthesized iron nanoparticles (ZVI-PN) were done by UV–Visible spectroscopy, FTIR, HR-TEM/EDAX, XRD, AFM and zeta potential. The as-synthesized nanoparticles were used as adsorbent for acetaminophen remediation from aqueous solutions. HR-TEM images showed poly-dispersed ZVI-PN of size 13-29 nm with spherical shape. The results of the FTIR analysis revealed that the bioactive compounds present in the microalgae are capable for the synthesis and stabilization of ZVI-PN. The optimum adsorption conditions of acetaminophen are initial pH3.0; temperature with 30 °C, salinity (NaCl) concentration with 20 mg/L and adsorbent concentration with 105mg/L (7 mL). The ZVI-PN could remove 98.6% and 91.3% of acetaminophen from pure and river water samples respectively. The maximum monolayer coverage capacity of ZVI-PN for acetaminophen adsorption was found to be 105 mg/L. The Langmuir isotherm model could explained the experimental equilibrium data and the adsorption data fitted well with pseudo second-order kinetic model.
Databáze: OpenAIRE
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