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Title: Batch and continuous adsorption of Cu(II) and Zn(II) ions from aqueous solution on bi‐functionalized sugarcane‐based biosorbent.
Authors: Teodoro, Filipe Simões
Soares, Liliane Catone
Filgueiras, Jefferson Gonçalves
Azevedo, Eduardo Ribeiro de
Patino Agudelo, Alvaro Javier
Herrera Adarme, Oscar Fernando
Silva, Luis Henrique Mendes da
Gurgel, Leandro Vinícius Alves
Keywords: Mixed ester
Nuclear magnetic resonance
Isothermal titration calorimetry
Thomas model
Bohart-Adams model
Issue Date: 2022
Citation: TEODORO, F. S. et al. Batch and continuous adsorption of Cu(II) and Zn(II) ions from aqueous solution on bi‐functionalized sugarcane‐based biosorbent. Environmental Science and Pollution Research, v. 29, p. 26425–26448, 2022. Disponível em: <>. Acesso em: 11 out. 2022.
Abstract: A new one-pot synthesis method optimized by a 23 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 diferent chemical structures increased its selectivity, improving its performance for removing pollutants from contaminated water. The suc- cinate 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 13C Multi-CP SS NMR and FTIR revealed the best order of addition of each anhydride that maximized the chemical modifcation 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 difusion, intraparticle difusion, 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 ftted by the Thomas and Bohart-Adams models.
ISSN: 1614-7499
Appears in Collections:DEQUI - Artigos publicados em periódicos

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