Ecuadorian yeast species as microbial particles for Cr(VI) biosorption

Juan Fernando Campaña-Pérez, Patricia Portero Barahona, Pablo Martín-Ramos, Enrique Javier Carvajal Barriga

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

17 Citas (Scopus)


Pollution caused by heavy metals is a prime concern due to its impact on human health, animals, and ecosystems. Cr(VI), generated in a range of different industries as a liquid effluent, is one of the most frequent contaminants. In the work presented herein, the adsorption efficiency of three species of native yeasts from Ecuador (Kazachstania yasuniensis, Kodamaea transpacifica, and Saturnispora quitensis) for Cr(VI) removal from simulated wastewater was assessed, taking Saccharomyces cerevisiae as a reference. After disruption of the flocs of yeast with a cationic surfactant, adsorption capacity, kinetics, and biosorption isotherms were studied. K. transpacifica isolate was found to feature the highest efficiency among the four yeasts tested, as a result of its advantageous combination of surface charge, individual cell size (4.04 μm), and surface area (1588.27 m2/L). The performance of S. quitensis was only slightly lower. The remarkable biosorption capacities of these two isolates (476.19 and 416.67 mg of Cr(VI)/g of yeast, respectively) evidence the potential of non-conventional yeast species as sorption microbial particles for polluted water remediation.

Idioma originalInglés
Páginas (desde-hasta)28162-28172
Número de páginas11
PublicaciónEnvironmental Science and Pollution Research
EstadoPublicada - 1 sep. 2019

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© 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

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