Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents

Contamination of effluents with chemicals is a serious problem that impacts human health. Methylene blue is a cationic dye found frequently in industrial and urban sewages. In this work, dried grinded seeds and peels of nance were used as biosorbents in aqueous solutions at pH 7 and 10 (simulating u...

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Bibliographic Details
Published in:Journal of chemistry 2021-04, Vol.2021, p.1-13
Main Authors: Robles-Melchor, Lorena, Cornejo-Mazón, Maribel, Hernández-Martínez, Diana Maylet, Gutiérrez-López, Gustavo F., García-Pinilla, Santiago, López-Villegas, Edgar Oliver, Téllez-Medina, Darío Iker
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aqueous solutions
Cationic dyes
Contamination
Efficiency
Effluents
Gibbs free energy
Image analysis
Mass transfer
Methylene blue
Moisture content
Physiological aspects
Seeds
Sorbents
Sorption
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Summary:Contamination of effluents with chemicals is a serious problem that impacts human health. Methylene blue is a cationic dye found frequently in industrial and urban sewages. In this work, dried grinded seeds and peels of nance were used as biosorbents in aqueous solutions at pH 7 and 10 (simulating urban and textile effluents) finding that Langmuir and Freundlich isotherms adequately described the sorption. Adsorption efficiencies were larger than 98% in all cases and slightly lower at pH 7 due to the closeness with the point of zero charge (pzc) of seeds and peels of nance (5.96 and 3.42, respectively). In all cases, Langmuir adsorption was favorable (RLa 
ISSN:2090-9063
2090-9071
DOI:10.1155/2021/5556940