The Metallotolerance and Biosorption of As(V) and Cr(VI) by Black Fungi.

ABSTRACT: A collection of 34 melanized fungi isolated previously from anthropogenic contaminated sites were assessed for their tolerance to toxic concentrations of As(V) and Cr(VI) anions. Three strains of the species Cyphellophora olivacea, Rhinocladiella similis, and Exophiala mesophila (Chaetothyriales) were identified as hyper-metallotolerant, with estimated IC₅₀ values that ranged from 11.2 to 16.9 g L^-1 for As(V) and from 2.0 to 3.4 g L^-1 for Cr(VI). E. mesophila and R. similis were selected for subsequent assays on their biosorption capacity and kinetics under different pH values (4.0 and 6.5) and types of biomass (active and dead cells and melanin extracts). The fungal biosorption of As(V) was relatively ineffective, but sig

SUBMITTER: Medina-Armijo C 

PROVIDER: S-EPMC10817489 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature