Mobilisation of hazardous elements from arsenic-rich mine drainage ochres by three Aspergillus species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F21%3A00347161" target="_blank" >RIV/68407700:21340/21:00347161 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.jhazmat.2020.124938" target="_blank" >https://doi.org/10.1016/j.jhazmat.2020.124938</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhazmat.2020.124938" target="_blank" >10.1016/j.jhazmat.2020.124938</a>

Result language

angličtina

Original language name

Mobilisation of hazardous elements from arsenic-rich mine drainage ochres by three Aspergillus species

Original language description

Natural ferric ochres that precipitate in streambeds at abandoned mining sites are natural scavengers of various metals and metalloids. Thus, their chemical and structural modification via microbial activity should be considered in evaluation of the risks emerging from probable spread of contamination at mining sites. Our results highlight the role of various aspergilli strains in this process via production of acidic metabolites that affect mobility and bioavailability of coprecipitated contaminants. The Mossbauer analysis revealed subtle structural changes of iron in ochres, while the elemental analysis of non-dissolved residues of ochres that were exposed to filamentous fungi suggest coinciding bioextraction of arsenic and antimony with extensive iron mobilisation. However, the zinc bioextraction by filamentous fungi is less likely dependent on iron leaching from ferric ochres. The strain specific bioextraction efficiency and subsequent bioaccumulation of mobilised metals resulted in distinct tolerance responses among the studied soil fungal strains. However, regardless the burden of bioextracted metal(loid)s on its activity, the Aspergillus niger strain has shown remarkable capability to decrease pH of its environment and, thus, bioextract significant and environmentally relevant amounts of potentially toxic elements from the natural ochres.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Hazardous Materials

ISSN

0304-3894

e-ISSN

1873-3336

Volume of the periodical

409

Issue of the periodical within the volume

December

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

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UT code for WoS article

000621665100006

EID of the result in the Scopus database

2-s2.0-85099158028