Reduction of selenite to elemental Se(0) with simultaneous degradation of phenol by co-cultures of Phanerochaete chrysosporium and Delftia lacustris.

Author(s) Chakraborty, S.; Rene, E.R.; Lens, P.N.L.
Journal J Microbiol
Date Published 2019 Sep

The simultaneous removal of phenol and selenite from synthetic wastewater was investigated by adopting two different co-culturing techniques using the fungus Phanerochaete chrysosporium and the bacterium Delftia lacustris. Separately grown biomass of the fungus and the bacterium (suspended co-culture) was incubated with different concentrations of phenol (0-1,200 mg/L) and selenite (10 mg/L). The selenite ions were biologically reduced to extracellular Se(0) nanoparticles (3.58 nm diameter) with the simultaneous degradation of up to 800 mg/L of phenol. Upon growing the fungus and the bacterium together using an attached growth co-culture, the bacterium grew as a biofilm onto the fungus. The extracellularly produced Se(0) in the attached growth co-culture had a minimum diameter of 58.5 nm. This co-culture was able to degrade completely 50 mg/L phenol, but was completely inhibited at a phenol concentration of 200 mg/L.

DOI 10.1007/s12275-019-9042-6
Keywords Biodegradation, Environmental; Biotransformation; Coculture Techniques; Delftia; Oxidation-Reduction; Phanerochaete; Phenol; Selenious Acid; Selenium; Waste Water; Water Pollutants
ISSN 1976-3794
Citation J Microbiol. 2019;57(9):738747.

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