title: Aluminium leaching from red mud by filamentous fungi.
abstract: This contribution investigates the efficient and environmentally friendly aluminium leaching from red mud (bauxite residue) by 17 species of filamentous fungi. Bioleaching experiments were examined in batch cultures with the red mud in static, 7-day cultivation. The most efficient fungal strains in aluminium bioleaching were Penicillium crustosum G-140 and Aspergillus niger G-10. The A. niger G-10 strain was capable to extract up to approximately 141 mg·L(-1) of aluminium from 0.2 g dry weight red mud. Chemical leaching with organic acids mixture, prepared according to A. niger G-10 strain's respective fungal excretion during cultivation, proved that organic acids significantly contribute to aluminium solubilization from red mud.
authors.affiliation: Comenius University in Bratislava, Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, Slovak Republic. Electronic address: urik@fns.uniba.sk.
authors.forename: Martin
authors.initials: M
authors.lastname: Urík
authors.affiliation: Comenius University in Bratislava, Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, Slovak Republic.
authors.forename: Marek
authors.initials: M
authors.lastname: Bujdoš
authors.affiliation: Comenius University in Bratislava, Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, Slovak Republic.
authors.forename: Barbora
authors.initials: B
authors.lastname: Milová-Žiaková
authors.affiliation: Department of Mycology and Physiology, Institute of Botany, Slovak Academy of Sciences, Dubravská 9, 84523 Bratislava, Slovak Republic.
authors.forename: Petra
authors.initials: P
authors.lastname: Mikušová
authors.affiliation: Department of Mycology and Physiology, Institute of Botany, Slovak Academy of Sciences, Dubravská 9, 84523 Bratislava, Slovak Republic.
authors.forename: Marek
authors.initials: M
authors.lastname: Slovák
authors.affiliation: Comenius University in Bratislava, Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, Slovak Republic.
authors.forename: Peter
authors.initials: P
authors.lastname: Matúš
mesh_terms: D000535:Aluminum / Q000737:chemistry* / Q000378:metabolism; D000537:Aluminum Oxide / Q000737:chemistry; D000538:Aluminum Silicates / Q000737:chemistry* / Q000378:metabolism; D001230:Aspergillus / Q000378:metabolism*; D001711:Biotransformation; D002264:Carboxylic Acids / Q000737:chemistry; D000077215:Clay; D010407:Penicillium / Q000378:metabolism*
chemical_list: D000538:Aluminum Silicates; D002264:Carboxylic Acids; D000535:Aluminum; D000537:Aluminum Oxide; D000077215:Clay
keywords: Aluminium; Bioleaching; Filamentous fungi; Red mud