An overview of the biosorption mechanism for the bioremediation of synthetic dyes using yeast cells

ABSTRACT

Dye effluents are among the most polluted wastewaters that require adequate treatment before their discharge into the environment. They have multiple chemical properties that allow them great resistance to environmental conditions, such as the persistence of coloured fabric against washing, exposure to light, chemicals, and biological attacks. However, these same particularities make them hardly degradable, thereby complicating their disposal using traditional methods. The use of biosorption for the removal of dye from wastewater has emerged as a simple, effective, and ecologically technique. Diverse biomaterials are known to bind such pollutants, including natural residues, agricultural wastes and various microorganisms like bacteria, fungi, microalgae, and yeast. In recent decades, the use of yeast cells has received increasing attention, due to their advantages such as low-cost price, availability, and ability to remove various recalcitrant contaminants. On the other hand, their autoaggregation properties can facilitate their recuperation after treatment. The present paper explores the state of the art in the field of biosorption of dye using living, dead, and modified yeast cells. Kinetic, equilibrium models as well as the analytical methods employed in biosorption studies are also discussed. The effects of physicochemical conditions on the biosorption efficiency, including physical, chemical, and biotechnological techniques that can be utilized to increase yeast’s biosorption capacities are also highlighted.

GRAPHICAL ABSTRACT

KEYWORDS:

• Yeast
• dye
• toxicity
• biosorption
• bioremediation

Acknowledgments

The authors gratefully acknowledge Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR) for the financial support. Authors wish to thank Chanda Mutale Joan for reviewing the quality of the English language in this article.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

M. Danouche

Mr. Mohammed DANOUCHE is a PhD student, at Green Biotechnology Laboratory of Moroccan Foundation for Advanced Science, Innovation & Research, and Microbial Biotechnology and Bioactive Molecules Laboratory, Sciences and Techniques Faculty, Sidi Mohamed Ben Abdellah University. He has a master’s degree in biodiversity management and conservation. He is preparing his PhD on microbial diversity applications for the development of a low-cost bioprocess for the treatment of organic and inorganic pollutants in the aquatic environment. Author or co-author of many scientific articles. He also participated in several international congresses on biological management of organic and metallic waste.

H. El Arroussi

Dr. Hicham EL ARROUSSI is Senior Scientist, R&D Manager of Physiology and Biotechnology of microalgae at Moroccan fondation for advanced science, innovation and research (MAScIR), Rabat Morocco. He is a researcher for the last 13 years of microalgae biotechnology and valorization in agriculture, energy and environment fields. His research focuses on based microalgae plant biostimulant for sustainable agriculture and uses of microalgae for wastewater treatment and heavy metals remediation and biosequestration of carbo dioxide by microalgae for biodiesel production. Dr EL ARROUSSI has set up and led several national and international research projects and has important contributions including several international patents and publications in microalgae biotechnology for bioproducts and new process development in different fields. Author or co-author of many JCR scientific articles, book chapters and 9 international patents.

W. Bahafid

Pr. Wikak BAHAFID is a Teacher-Researcher of Microbiology at the Faculty of Sciences and Techniques, University of Sidi Mohammed Ben Abdellah. She has 10 years experience in environmental microbiology and bioremediation research. Her research focuses on bioremediation of polluted sites, with an emphasis on heavy metals and azo dyes pollution. Relevant recent results include the bacterial and yeast mechanisms involved in the detoxification of Cr (VI), the characterization of bacteria and yeast with high potential in azo dyes removal, phytotoxic effect of Cr(VI) and azo dyes. Author or co-author of many scientific articles and book chapters.

N. El Ghachtouli

Pr. Naïma EL GHACHTOULI is professor in Microbiology at the Faculty of Sciences and Techniques, University of Sidi Mohammed Ben Abdellah. She has more than 23 years experience in environmental microbiology and bioremediation research. Her research focuses on soil and water microbiology, with an emphasis on polluted ecosystems. Relevant recent results include the characterization of bacteria and yeast with high potential in pollutants removal, cell surface characterization and Biofilm formation, wastewater treatment. She participated in several reserch projects including 5 international projects. Author of publications in peer-reviewed journals, book chapters and communications at scientific meetings.