Treatment of furazolidone contaminated water using banana pseudostem biochar engineered with facile synthesized magnetic nanocomposites

• Published in: Bioresource technology 2020-02, Vol.297, p.122472-122472, Article 122472
• Main Authors: Gurav, Ranjit, Bhatia, Shashi Kant, Choi, Tae-Rim, Park, Ye-Lim, Park, Jun Young, Han, Yeong-Hoon, Vyavahare, Govind, Jadhav, Jyoti, Song, Hun-Suk, Yang, Peizhou, Yoon, Jeong-Jun, Bhatnagar, Amit, Choi, Yong-Keun, Yang, Yung-Hun
• Format: Article
• Language: English
• Subjects: Adsorption; Antibiotics; Banana pseudostem; Charcoal; Furazolidone; Kinetics; Magnetic biochar; Magnetic Phenomena; Musa; Nanocomposites; Spectroscopy, Fourier Transform Infrared; Water Pollutants, Chemical
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2019.122472

[Display omitted] •Biochar was produced by pyrolyzing banana pseudostem biomass at 600 °C.•Facile synthesis & coating of Fe3O4 on biochar showed superparamagnetic properties.•Fe3O4-biochar showed higher surface area with higher furazolidone removal efficacy.•Pseudo-second order model fitted well suggesting chemisorption as rate-limiting step. The present study enlightens facile synthesis and characterization of magnetic biochar derived from waste banana pseudostem biomass for the removal of nitrofuran antibiotic ‘furazolidone’ (FZD). Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), magnetic hysteresis, X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) revealed successful hybridization of magnetic nanocomposites with biochar (BPB600). The maximum adsorption capacity of magnetic BPB600 was 96.81% (37.86 mg g−1), which was significantly higher than the non-coated BPB600 (77.25%; 31.45 mg g−1). Adsorption kinetics data fitted well with pseudo-second order, and Elovich model demonstrating dominance of the chemisorption mechanism. Furthermore, the response surface methodology (RSM) was applied to evaluate the interactive effect of pH, temperature, and FZD concentration on adsorption. Therefore, the results of present study would provide an effective strategy to tackle antibiotic contaminants responsible for the antibiotic resistance genes or bacteria that decreases the therapeutic value of antibiotics.