Academy of Finland
Funding decision
Name Kujala, Katharina
Organisation OY
Project title
Microbial transformations of arsenic and antimony in Northern natural peatlands treating mine waste waters
Decision No. 287397
Decision date 11.05.2015
Funding period 01.09.2015 - 31.08.2018
Funding 257 070
WebFOCUS Report
Project description
This project targeted microbially mediated transformations of arsenic and antimony in peatlands treating mining-affected waters. Arsenic and antimony are potentially toxic metalloids and can be major contaminants in mining-affected waters. Microbial transformations of arsenic and antimony (like oxidation and reduction) crucially affect the retention of those contaminants in the peatland. The results of the project show that microorganisms in those treatment peatlands are highly diverse and have the genetic potential to influence arsenic/antimony speciation and subsequently their retention. Incubation experiments showed that peat microorganisms are indeed capable of oxidation/reduction of arsenic and antimony species and thus aid the retention of these potentially toxic contaminants in peat. Treatment peatlands and the microorganisms within them are therefore important players in the protection of natural waterbodies near mining operations.