Method for reducing bioavailability of lead by a...

C - Chemistry – Metallurgy – 12 – N

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C12N 11/08 (2006.01) C12S 99/00 (2010.01) B09C 1/10 (2006.01) C02F 3/34 (2006.01) C12N 11/00 (2006.01) C12N 11/02 (2006.01) C12N 11/14 (2006.01) C12P 3/00 (2006.01) C02F 3/00 (2006.01)

Patent

CA 2287222

Bioavailability of lead and other heavy metals in the environment may be reduced by addition of microorganisms which sequester lead from the environment in the presence of phosphate. The microorganisms are highly mobile and are, therefore, capable of scavenging a material for lead, which they then sequester. The method basically consists of reducing bioavailability of lead in the environment by addition of Pseudomonas aeroginosa strain CHL004 to said environment in the presence of phosphate which contains at least stoichiometric equivalent amounts of phosphate to lead.

Il est possible de réduire la biodisponibilité du plomb et d'autres métaux lourds dans l'environnement en ajoutant des micro-organismes qui séquestrent le plomb provenant de l'environnement en présence de phosphate. Les micro-organismes sont extrêmement mobiles et capables, par conséquent, de piéger un matériau à affinité pour le plomb qu'ils séquestrent ensuite. Ce procédé consiste à la base à réduire la biodisponibilité du plomb dans l'environnement en ajoutant une souche Pseudomonas aeroginosa CHL004 à l'environnement en présence de phosphate qui contient au moins des quantités équivalentes stoïchiométriques de phosphate par rapport au plomb.

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