Abstrakt
Atrazine mineralization was studied in sediments taken from a shallow
aquifer underlying a cornfield continuously receiving atrazine and
terbuthylazine. In contrast to previous publications indicating slow or
nonexisting mineralization rates under denitrifying conditions in
sediments, we hereby report on the ability of the bacterium Pseudomonas sp.
strain ADP to rapidly mineralize atrazine in aquifer sediments under
nitrate reducing conditions. When atrazine was present in low
concentrations (relevant to nonpoint sources such as agricultural
application), the bacterium mineralized 55% and 75% of the atrazine in 2
and 4 days, respectively. When atrazine was present in high
concentrations (relevant to spill sites), P. ADP mineralized 48%
and 78% in 4 and 15 days, respectively. The present study indicates that
bioaugmantation with an effective atrazine mineralizing bacterium such
as P. ADP could yield high mineralization rates even under oxygen
limited conditions and have a significant implication for
bioremediation of atrazine in contaminated aquifers.
Originalsprog | Engelsk |
---|---|
Sider (fra-til) | 3789–3792 |
Antal sider | 4 |
Tidsskrift | Environmental Science & Technology |
Vol/bind | 32 |
Udgave nummer | 23 |
DOI | |
Status | Udgivet - 13 okt. 1998 |
Programområde
- Programområde 2: Vandressourcer