Batch and continuous adsorption of Cu(II) and Zn(II) ions from aqueous solution on bi-functionalized sugarcane-based biosorbent.

Autor: Teodoro FS; Grupo de Físico-Química Orgânica, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, s/nº, Bauxita, Ouro Preto, Minas Gerais, 35400-000, Brazil., Soares LC; Grupo de Físico-Química Orgânica, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, s/nº, Bauxita, Ouro Preto, Minas Gerais, 35400-000, Brazil., Filgueiras JG; Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense, 400, São Carlos, São Paulo, 13566-590, Brazil.; Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, Niterói, Janeiro, 24020-007, Brazil., de Azevedo ER; Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense, 400, São Carlos, São Paulo, 13566-590, Brazil., Patiño-Agudelo ÁJ; Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n°, Viçosa, Minas Gerais, 36570-000, Brazil.; Instituto de Química, Universidade de São Paulo, Av. Lineu Prestes, 748, Cidade Universitária, São Paulo, 05508-000, Brazil., Adarme OFH; Laboratório de Química Tecnológica e Ambiental, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, s/nº, Bauxita, Ouro Preto, Minas Gerais, 35450-000, Brazil., da Silva LHM; Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n°, Viçosa, Minas Gerais, 36570-000, Brazil., Gurgel LVA; Grupo de Físico-Química Orgânica, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, s/nº, Bauxita, Ouro Preto, Minas Gerais, 35400-000, Brazil. legurgel@ufop.edu.br.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2022 Apr; Vol. 29 (18), pp. 26425-26448. Date of Electronic Publication: 2021 Dec 02.
DOI: 10.1007/s11356-021-17549-5
Abstrakt: A new one-pot synthesis method optimized by a 2 3 experimental design was developed to prepare a biosorbent, sugarcane bagasse cellulose succinate pyromellitate (SBSPy), for the removal of Cu(II) and Zn(II) from single-component aqueous solutions, in batch and continuous modes. The bi-functionalization of the biosorbent with ligands of different chemical structures increased its selectivity, improving its performance for removing pollutants from contaminated water. The succinate moiety favored Cu(II) adsorption, while the pyromellitate moiety favored Zn(II) adsorption. Sugarcane bagasse (SB) and SBSPy were characterized using several techniques. Analysis by 13 C Multi-CP SS NMR and FTIR revealed the best order of addition of each anhydride that maximized the chemical modification of SB. The maximum adsorption capacities of SBSPy for Cu(II) and Zn(II), in batch mode, were 1.19 and 0.95 mmol g -1 , respectively. Homogeneous surface diffusion, intraparticle diffusion, and Boyd models were used to determine the steps involved in the adsorption process. Isothermal titration calorimetry was used to assess changes in enthalpy of adsorption as a function of SBSPy surface coverage. Fixed-bed column adsorption of Cu(II) and Zn(II) was performed in three cycles, showing that SBSPy has potential to be used in water treatment. Breakthrough curves were well fitted by the Thomas and Bohart-Adams models.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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