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Article

Cyanobacterial Biomass as a Potential Biosorbent for the Removal of Recalcitrant Dyes from Water

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Grupo de Investigación en Fotoquímica y Fotobiología, Facultad de Ciencias Básicas, Universidad del Atlántico, Puerto Colombia 081007, Colombia
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Gestión de Estudios en Saneamiento y Ambiental, Department of Civil and Environmental, Universidad de la Costa, Calle 58 # 55-66, Barranquilla 080002, Colombia
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Grupo de Investigación en Compuestos Orgánicos de Interés Medicinal CODEIM, Parque Tecnológico Guatiguará, Universidad Industrial de Santander, A.A. 678, Piedecuesta 681011, Colombia
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Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago 7500912, Chile
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Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, UC. Energy Research Center, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
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Author to whom correspondence should be addressed.
Academic Editors: Yan Wang and Constantinos V. Chrysikopoulos
Water 2021, 13(22), 3176; https://doi.org/10.3390/w13223176
Received: 20 September 2021 / Revised: 18 October 2021 / Accepted: 2 November 2021 / Published: 10 November 2021
The accumulation of cyanobacteria produced due to eutrophication processes and the increment of different pollutants in water as a result of industrial processes affects aquatic environments such as the ocean, rivers, and swamps. In this work, cyanobacterial biomass was used as a biosorbent for the removal of a commercial dye, methylene blue (MB). Thus, MB was removed from biomass obtained from cyanobacterial samples collected from the swamp located in the Colombian Caribbean. Spectroscopical techniques such as FTIR, SEM, EDX measurements were used for the physico-chemical characterization of the bio-adsorbent material. Furthermore, we present the effect of various adsorption parameters such as pH, MB dose, time, and adsorbent concentration on the adsorbent equilibrium process. Three different isotherm models were used to model the MB adsorption on biomass. The functional groups identified on biomass suggest that these models are suitable for the characterization of the sorption of cationic dyes on the surfaces of the biomass; in addition, an SEM assay showed the heterogeneous surface of the biomass’ morphology. The equilibrium tests suggested a multilayer type adsorption of MB on the biomass surface. The kinetics results show that a pseudo-second order kinetic model was suitable to describe the MB adsorption on the biomass surface. Finally, the herein obtained results give an alternative to resolve the eutrophication problems generated by cyanobacterial growth in the swamp “Ciénaga de Malambo”. View Full-Text
Keywords: biosorbent; cyanobacterial; recalcitrant dyes; adsorption biosorbent; cyanobacterial; recalcitrant dyes; adsorption
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MDPI and ACS Style

Diaz-Uribe, C.; Angulo, B.; Patiño, K.; Hernández, V.; Vallejo, W.; Gallego-Cartagena, E.; Romero Bohórquez, A.R.; Zarate, X.; Schott, E. Cyanobacterial Biomass as a Potential Biosorbent for the Removal of Recalcitrant Dyes from Water. Water 2021, 13, 3176. https://doi.org/10.3390/w13223176

AMA Style

Diaz-Uribe C, Angulo B, Patiño K, Hernández V, Vallejo W, Gallego-Cartagena E, Romero Bohórquez AR, Zarate X, Schott E. Cyanobacterial Biomass as a Potential Biosorbent for the Removal of Recalcitrant Dyes from Water. Water. 2021; 13(22):3176. https://doi.org/10.3390/w13223176

Chicago/Turabian Style

Diaz-Uribe, Carlos, Barni Angulo, Karen Patiño, Vincent Hernández, William Vallejo, Euler Gallego-Cartagena, Arnold R. Romero Bohórquez, Ximena Zarate, and Eduardo Schott. 2021. "Cyanobacterial Biomass as a Potential Biosorbent for the Removal of Recalcitrant Dyes from Water" Water 13, no. 22: 3176. https://doi.org/10.3390/w13223176

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