Fluoranthene adsorption by graphene oxide and magnetic chitosan composite (mCS/GO).

Autor: Nascimento DP; School of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Avenue, 500, 13083-852 Campinas, São Paulo, Brazil., de Farias MB; School of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Avenue, 500, 13083-852 Campinas, São Paulo, Brazil., Queiroz RN; School of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Avenue, 500, 13083-852 Campinas, São Paulo, Brazil., da Silva MGC; School of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Avenue, 500, 13083-852 Campinas, São Paulo, Brazil., Prediger P; School of Technology, University of Campinas - UNICAMP, 13484-332 Limeira, São Paulo, Brazil., Vieira MGA; School of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Avenue, 500, 13083-852 Campinas, São Paulo, Brazil. melissag@unicamp.br.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Jan; Vol. 31 (5), pp. 6891-6906. Date of Electronic Publication: 2023 Dec 29.
DOI: 10.1007/s11356-023-31528-y
Abstrakt: The oil industry faces the challenge of reducing its high polluting potential, due to the presence of aromatic pollutants, such as polycyclic aromatic hydrocarbons (PAHs). Efforts have been made to mitigate the impact of PAHs in industry through the development of detection technologies and the implementation of mitigation strategies. This study presents the adsorption of fluoranthene, through a magnetic composite of graphene oxide and chitosan as a method of remediation of produced water. The efficiency of the process was evaluated through kinetic, equilibrium, thermodynamic, and characterization analyses. The nanocomposite was able to remove 90.9% of FLT after 60 min and showed a maximum adsorption capacity of 28.22 mg/g, demonstrating that they can be implemented to remove fluoranthene. Kinetic and equilibrium experimental data showed that physisorption is the predominant adsorptive mechanism; however, the process is also influenced by chemisorption, which occurs through electrostatic interactions between the surface of the material and the adsorbate. The thermodynamic study showed that fluoranthene and graphene composite have high affinity, and that the adsorption is exothermic and spontaneous. The results presented in this paper indicate that the magnetic composite is a potential and sustainable adsorbent for fluoranthene remediation.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
Externí odkaz: