Bacterial cellulose microfilament biochar-architectured chitosan/polyethyleneimine beads for enhanced tetracycline and metronidazole adsorption.

Autor: Mosaffa E; Dr. K. C. Patel R & D Centre, Charotar University of Science and Technology (CHARUSAT), 388 421 Anand, Gujarat, India; P D Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), 388 421 Anand, Gujarat, India., Ramsheh NA; Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, University of Science and Technology, 16846 Tehran, Iran., Banerjee A; Dr. K. C. Patel R & D Centre, Charotar University of Science and Technology (CHARUSAT), 388 421 Anand, Gujarat, India. Electronic address: atanubanerjee.rnd@charusat.ac.in., Ghafuri H; Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, University of Science and Technology, 16846 Tehran, Iran.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Jul; Vol. 273 (Pt 1), pp. 132953. Date of Electronic Publication: 2024 Jun 29.
DOI: 10.1016/j.ijbiomac.2024.132953
Abstrakt: This study investigates the potential applications of incorporating 2D bacterial cellulose microfibers (BCM) biochar into chitosan/polyethyleneimine beads as a semi-natural sorbent for the efficient removal of tetracycline (TET) and metronidazole (MET) antibiotics. Batch adsorption experiments and characterization techniques evaluate removal performance and synthesized adsorbent properties. The adsorbent eliminated 99.13 % and 90 % of TET and MET at a 10 mg.L -1 concentration with optimal pH values of 8 and 6, respectively, for 90 min. Under optimum conditions and a 400 mg.L -1 concentration, MET and TET have possessed the maximum adsorption capacities of 691.325 and 960.778 mg.g -1 , respectively. According to the isothermal analysis, the adsorption of TET fundamentally follows the Temkin (R 2  = 0.997), Redlich-Peterson (R 2  = 0.996), and Langmuir (R 2  = 0.996) models. In contrast, the MET adsorption can be described by the Langmuir (R 2  = 0.997), and Toth (R 2  = 0.991) models. The pseudo-second-order (R 2  = 0.998, 0.992) and Avrami (R 2  = 0.999, 0.999) kinetic models were well-fitted with the kinetic results for MET and TET respectively. Diffusion models recommend that pore, liquid-film, and intraparticle diffusion govern the rate of the adsorption process. The developed semi-natural sorbent demonstrated exceptional adsorption capacity over eleven cycles due to its porous bead structure, making it a potential candidate for wastewater remediation.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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