Efficient Removal of Methylene Blue Using Living Biomass of the Microalga Chlamydomonas moewusii: Kinetics and Equilibrium Studies

Seoane Cuquejo, Raquel; Santaeufemia, Sergio; Abalde, Julio; Torres, Enrique

Use this link to cite:

http://hdl.handle.net/2183/30345

Efficient Removal of Methylene Blue Using Living Biomass of the Microalga Chlamydomonas moewusii: Kinetics and Equilibrium Studies

Files

Torres_Enrique_2022_Efficient_removal_methylene_blue_using_living_biomass_microalga_Chlamydomonas_moewusii.pdf (1.5 MB)

Identifiers

URI: http://hdl.handle.net/2183/30345

DOI: 10.3390/ijerph19052653

Publication date

2022-02-24

Authors

Seoane Cuquejo, Raquel

Santaeufemia, Sergio

Abalde, Julio

Torres, Enrique

Bibliographic citation

Seoane, R.; Santaeufemia, S.; Abalde, J.; Torres, E. Efficient Removal of Methylene Blue Using Living Biomass of the Microalga Chlamydomonas moewusii: Kinetics and Equilibrium Studies. Int. J. Environ. Res. Public Health 2022, 19, 2653. https://doi.org/10.3390/ijerph19052653

Abstract

[Abstract] The efficiency of the living biomass of the microalga Chlamydomonas moewusii in removing methylene blue dye is determined. The kinetics, equilibrium isotherms, and the effects on this process of the pH, contact time, and initial concentration of the dye are studied. Fourier transform infrared spectrometry and point of zero charge are used to characterize the biomass and explore the process. The maximum removal capacity derived from the Langmuir isotherm is 212.41 ± 4.55 mg/g after 7 h of contact time at pH 7. The removal process is rapid because kinetic studies revealed that the best fit of the data is with pseudo-third-order kinetics. The removal efficiency is dependent on the pH; as the pH increased, the efficiency is higher. These results show that the living biomass of this microalga is a very efficient biosorbent and therefore very suitable for the removal of methylene blue from aqueous solutions.