Natural Acid Mine Drainage affects abandoned sulphide mines worldwide, causing hardpans genesis and heavy metals leaching. Hardpans are characterized by very low permeability, thus representing a significant limiting factor for oxygen and water circulation in the rhizosphere. Our work shows the results concerning the gypsum biomineralization capability of a native Trichoderma harzianum Rifai strain in sulphide-rich hardpans. Two months after the fungal inoculum, hardpan clasts resulted completely covered by T. harzianum mycelium, where new-formed gypsum crystals occur. Our study provided the first evidence about interaction between T. harzianum and sulphide-mineralized hardpans as well as on its influence on gypsum genesis.

Gypsum biomineralization in sulphide-rich hardpans by a native Trichoderma harzianum Rifai strain

CECCHI, GRAZIA;MARESCOTTI, PIETRO;DI PIAZZA, SIMONE;LUCCHETTI, GABRIELLA;MARIOTTI, MAURO;ZOTTI, MIRCA
2018-01-01

Abstract

Natural Acid Mine Drainage affects abandoned sulphide mines worldwide, causing hardpans genesis and heavy metals leaching. Hardpans are characterized by very low permeability, thus representing a significant limiting factor for oxygen and water circulation in the rhizosphere. Our work shows the results concerning the gypsum biomineralization capability of a native Trichoderma harzianum Rifai strain in sulphide-rich hardpans. Two months after the fungal inoculum, hardpan clasts resulted completely covered by T. harzianum mycelium, where new-formed gypsum crystals occur. Our study provided the first evidence about interaction between T. harzianum and sulphide-mineralized hardpans as well as on its influence on gypsum genesis.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/876183
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