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Application of alginate extraction residue for Al(III) ions biosorption: a complete batch system evaluation

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Abstract

The residue derived from the alginate extraction from S. filipendula was applied for the biosorption of aluminum from aqueous medium. The adsorptive capacity of the residue (RES) was completely evaluated in batch mode. The effect of pH, contact time, initial concentration, and temperature was assessed through kinetic, equilibrium, and thermodynamic studies. The biosorbent was characterized prior and post-Al biosorption by N2 physisorption, Hg porosimetry, He pycnometry, and thermogravimetry analyses. Equilibrium was achieved in 60 min. Kinetics obeys pseudo-second-order model at aluminum higher concentrations. Isotherms followed Freundlich model at low temperature (293.15 K) and D-R or Langmuir model at higher temperatures (303 and 313 K). Data modeling indicated the occurrence of both chemical and physical interactions in the aluminum adsorption mechanism using RES. The maximum adsorption capacity obtained was 1.431 mmol/g at 293 K. The biosorption showed a spontaneous, favorable, and exotherm character. A simplified batch design was performed, indicating that the residue is a viable biosorbent, achieving high percentages of removal using low biomass dosage.

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Funding

The authors thank the Coordination Office for the Improvement of Higher Education Personnel (CAPES), Brazilian Council for Scientific and Technological Development (CNPq) (Grant No. 308046/2019-6) and São Paulo Research Foundation (FAPESP) (Grant No. 2017/18236-1 and 2019/11353-8) for the financial support.

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Conceptualization: Melissa Gurgel Adeodato Vieira

Literature search and data analysis: Heloisa Pereira de Sá Costa

Writing—original draft preparation: Heloisa Pereira de Sá Costa

Writing—review and editing: Melissa Gurgel Adeodato Vieira, Meuris Gurgel Carlos da Silva, and Heloisa Pereira de Sá Costa

Supervision: Melissa Gurgel Adeodato Vieira

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Correspondence to Melissa Gurgel Adeodato Vieira.

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The authors declare no competing interests.

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Costa, H.P.d.S., da Silva, M.G.C. & Vieira, M.G.A. Application of alginate extraction residue for Al(III) ions biosorption: a complete batch system evaluation. Environ Sci Pollut Res 28, 51826–51840 (2021). https://doi.org/10.1007/s11356-021-14333-3

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  • DOI: https://doi.org/10.1007/s11356-021-14333-3

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