title: IronOxalateHumboldtine Crystallization by Fungus Aspergillus niger
metadata.name: dc.contributor.author
metadata.value: Zelenskaya, Marina S.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Izatulina, Alina R.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Frank-Kamenetskaya, Olga V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Vlasov, Dmitry Y.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2022-12-01T19:55:42Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2022-12-01T19:55:42Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2021-12-20
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/38653
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Microfungi were able to alternate solid substrate in various environments and play a
  noticeable role in the formation of insoluble calcium oxalate crystals in subaerial biofilms on rock
  surfaces. The present work describes how iron oxalate dihydrate humboldtine is acquired under
  the influence of the acid-producing microscopic fungus Aspergillus niger on the surface of two
  iron- bearing mineral substrates in vitro. Pyrrhotite and siderite rocks, as well as the products of
  their alteration, were investigated using a complex of analytical methods, including powder X-ray
  diffraction, optical microscopy, scanning electron microscopy and EDX spectroscopy. The effect
  of the underlying rocks with different composition and solubility and different oxidation states of
  iron on Fe-oxalate crystallization and on the morphology of humboldtine crystals was shown. The
  mechanisms of humboldtine formation were discussed. The results obtained in vitro seem promising
  for using fungi in bioleaching iron and other metals from processed ores and for the development of
  environmentally friendly biotechnologies.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: microbial biomineralization; Aspergillus niger; humboldtine; siderite; pyrrhotite
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: IronOxalateHumboldtine Crystallization by Fungus Aspergillus niger
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: crystals-gumboldt.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/38653/1/crystals-gumboldt.pdf
resources.format: Adobe PDF
resources.size: 2,51 MB