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

Samayita Chakraborty; Eldon R. Rene; Piet N. L. Lens

doi:10.1007/s12275-019-9042-6

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Reduction of selenite to elemental Se(0) with simultaneous degradation of phenol by co-cultures of Phanerochaete chrysosporium and Delftia lacustris: Samayita Chakraborty , Eldon R. Rene , Piet N. L. Lens; Journal of Microbiology 2019;57(9):738-747.
DOI: https://doi.org/10.1007/s12275-019-9042-6
Published online: August 3, 2019

UNESCO-IHE Institute for Water Education, 2601 DA Delft, The NetherlandsUNESCO-IHE Institute for Water Education, 2601 DA Delft, The Netherlands

Corresponding author: Eldon R. Rene , Tel: +31-152151840,

Received: 25 January 2019 • Revised: 17 March 2019 • Accepted: 27 March 2019

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Abstract

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.

Keywords: Phanerochaete chrysosporium;Delftia lacustris;phenol;selenite;Se(0) nanoparticles

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

J. Microbiol. 2019;57(9):738-747. Published online August 3, 2019

DOI: https://doi.org/10.1007/s12275-019-9042-6

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