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Efficient bioremediation of metal containing industrial wastewater using white rot fungi

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Abstract

Industrial wastewater contains several toxic heavy metals, which causes distressing effects on the environmental, animal, and human health as well. Hence, new efficient and eco-friendly methods to remove these harmful elements from industrial wastewaters are continuously being explored. During the present study, the bioremediation of industrial wastewaters by using wood degrading white rot fungi Phlebia brevispora and Phlebia floridensis and the results were also compared with Phanerochaete chrysosporium. Industrial wastewater showed the presence of significant amounts of Pb, Cd and Ni along with trace amount of Cr. Influence of these metals on the development and growth of white rot fungal strains were evaluated to confirm the degree of metal concentration tolerance using known metal solutions. Atomic absorption spectroscopic analyses revealed a maximum removal of 99–98% for Ni, 98–97% for Cd, while 12–98% for Pb from the industrial wastewater depending upon the fungi used. Scanning electron microscopic images showed the deformation and irregular expansion of fungal mycelium in the presence of synthetic blend and industrial wastewater. Energy dispersive X-ray spectroscopy revealed the significant presence of Cr on the mycelial surface, while trace amounts of other metal were observed after the treatment. Thus, outcomes of this study point toward the onsite use of white rot fungi as biosorbents to remove these metals from industrial wastewaters.

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Acknowledgements

Authors are thankful to CFMR, USDA, Madison, Wisconsin for proving the fungal cultures and Manipal University Jaipur for providing AAS and FESEM facility.

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No funding received.

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Contributions

KRS performed the experimental work, RG analyzed and validated the results and prepared the draft of manuscript, RKS conceptualized and supervised the work and edited the manuscript.

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Correspondence to R. K. Sharma.

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Authors declare no conflict of interest.

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Editorial responsibility: Maryam Shabani.

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Sharma, K.R., Giri, R. & Sharma, R.K. Efficient bioremediation of metal containing industrial wastewater using white rot fungi. Int. J. Environ. Sci. Technol. 20, 943–950 (2023). https://doi.org/10.1007/s13762-022-03914-5

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  • DOI: https://doi.org/10.1007/s13762-022-03914-5

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