Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Removal of Copper Ions from Distilled Sugar Cane Spirits by Adsorption on Red Mud

Sandro L. Barbosa
* ORCID logo ,
David Lee Nelson
ORCID logo ,
Savio E. O. Miranda
,
Wallans Torres Pio dos Santos
,
Alexandre Pereira Wentz
,
Helvia Nancy Fuzer Lira
,
Fernando L. P. Pessoa
,
Foster A. Agblevor
,
Daniel Armelim Bortoleto
,
Maria Betânia de Freitas-Marques
,
Wagner da Nova Mussel
,
Lucas D. Zanatta
Version 1 : Received: 30 March 2023 / Approved: 31 March 2023 / Online: 31 March 2023 (03:13:00 CEST)

How to cite: Barbosa, S.L.; Nelson, D.L.; Miranda, S.E.O.; dos Santos, W.T.P.; Wentz, A.P.; Lira, H.N.F.; Pessoa, F.L.P.; Agblevor, F.A.; Bortoleto, D.A.; Freitas-Marques, M.B.D.; Mussel, W.D.N.; Zanatta, L.D. Removal of Copper Ions from Distilled Sugar Cane Spirits by Adsorption on Red Mud. Preprints 2023, 2023030537. https://doi.org/10.20944/preprints202303.0537.v1 Barbosa, S.L.; Nelson, D.L.; Miranda, S.E.O.; dos Santos, W.T.P.; Wentz, A.P.; Lira, H.N.F.; Pessoa, F.L.P.; Agblevor, F.A.; Bortoleto, D.A.; Freitas-Marques, M.B.D.; Mussel, W.D.N.; Zanatta, L.D. Removal of Copper Ions from Distilled Sugar Cane Spirits by Adsorption on Red Mud. Preprints 2023, 2023030537. https://doi.org/10.20944/preprints202303.0537.v1

Abstract

The presence of copper in distilled sugar cane spirits, especially cachaça produced in alembics, has impeded the marketing of this product. Red mud (RM) is a residue obtained from alumina production. It contains a high concentration of metal oxides and is very alkaline. The RM was dried at 100 oC and sifted through a 150-micron sieve. The sample was characterized by B.E.T. nitrogen adsorption, scanning electron microscopy-energy-dispersive X-ray (SEM-EDX) and Atomic Absorption Spectrometry (A.A.S.). The textural parameters indicate that the total surface area (S.T.) was 21.9 m2g-1, and the total volume pore (V.T.) was 0.09 cm3g-1. The RM (1 g) was stirred for two hours with a 1.0 L cachaça sample containing 9.39 mg of copper L-1 and filtered under atmospheric pressure. The concentration of copper ions detected in the filtrate was 0.00 mg L-1. No copper ions were retained when the cachaça was filtered through the RM under high pressure without stirring prior to filtration.

Keywords

metals oxides; surface hydrophilicity; alcoholic beverage; contaminants; quality control; mesoporous materials

Subject

Business, Economics and Management, Accounting and Taxation

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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