Removal of arsenic using a dissimilatory arsenic reductase
AssigneeUniwersytet Warszawski
InventorsLukasz Drewniak, Aleksandra Sklodowska, Monika Radlinska, Robert Stasiuk
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Abstract
The object of the invention is the plasmid pSheB, particularly a plasmid which may comprise a fragment of pSheB including the arr module and functional derivatives thereof, and strains containing such a plasmid, preferably the Shewanella sp. strain, deposited as KKP 2045p, which are capable of removing arsenic by dissolution of minerals and reduction of arsenates to arsenites. The object of the invention is also the method and the use of such bacterial strains or compositions which may comprise them, for the selective removal of arsenic from mineral resources, raw materials industry waste or soil.
Claims22
An isolated plasmid comprising a nucleotides 63978 to 72599 of SEQ ID NO:
- 1 or its Functional derivative.
An isolated plasmid pSheB, having the sequence shown in SEQ ID NO:
- 1 or its functional derivative.
A bacterial strain comprising a nucleotides 63978 to 72599 of SEQ ID NO:
- 1 or its functional derivative.
A method for selective arsenic removal from a variety of mineral resources, raw materials industry or soils, wherein the removal of arsenic is carried out by dissimilatory arsenate reduction using a bacterial strain comprising the plasmid pSheB, having the sequence shown in SEQ ID NO:
- 1 or its functional derivative, which method comprises the following steps:
- a) preparation of the mineral resources, wastes or soils and mixing with an appropriate culture medium enabling the cultivation of the strain,
- b) addition of an inoculum of this strain and earring out the culture under conditions enabling its growth and conduction of dissimilatory arsenate reduction.
Dependencies are inferred from the claim text.