Reduction of Fe(III)EDTA by Klebsiella sp. strain FD-3 in NOx scrubber solutions

► A new bacterium FD-3 was isolated and identified as Klebsiella sp. strain. ► FD-3 had a good performance on Fe(III)EDTA reduction. ► Fe(II)EDTA-NO, NO3-, NO2- and SO32- inhibited the bio-reduction of Fe(III)EDTA. ► FD-3 had a certain capability to reduce Fe(II)EDTA-NO, NO3- and NO2-. ► The production of Fe(II)EDTA was associated with FD-3 growth.