Projects per year
Eighteen isolates of wood-rotting fungi isolated from Thailand were screened for the ability to produce metal-containing crystals from zinc, copper, cadmium and lead salts-amended culture medium. Five isolates (MR40, KYO, WR3, WR4 and WR5) were able to produce mycogenic crystals in 0.5% (w/v) heavy metal compound amended plates. The crystals were further investigated by scanning electron microscopy equipped with energy dispersive X-ray microanalysis (SEM-EDXA) and identified by X-ray powder diffraction (XRPD). The selected fungi were found to be capable of transforming zinc sulfate (ZnSO4·7H2O) into zinc oxalate dihydrate (C2O2Zn·2H2O), copper sulfate (CuSO4·5H2O) into copper oxalate hydrate (C2CuO4·xH2O), cadmium sulfate (3CdSO4·8H2O) into cadmium oxalate trihydrate (C2CdO4·3H2O) and lead nitrate (Pb(NO3)2) into lead oxalate (PbC2O4). Two of the selected strains (Fomitopsis cf. meliae and Ganoderma aff. steyaertanum) have not been previously reported to have heavy metal compound transformation abilities. These results provide further evidence that wood-rotting fungi can remove heavy metals from a metal-amended substrate by precipitation as metal oxalates: wood-rotting fungi could therefore be applied for detoxification of heavy metal pollution.
- heavy metal
- wood-rotting fungi
COG3: The Geology, Geometallurgy and Geomicrobiology of Cobalt Resources Leading to New Product Streams (joint with Natural History Museum and Universities of Manchester, Bangor, Exeter, Loughborough and Southampton and Industrial Partner)
1/05/15 → 31/03/21