Autotrophic denitrification by nitrate-dependent Fe(II) oxidation in a continuous up-flow biofilter.

A continuous-upflow biofilter packed with sponge iron was constructed for nitrate removal under an anaerobic atmosphere. Microbacterium sp. W5, a nitrate reducing and Fe(II) oxidizing strain, was added to the biofilter as an inoculum.

Nitrate removal by nitrate-dependent Fe(II) oxidation in an upflow denitrifying biofilm reactor.

A continuous upflow biofilm reactor packed with ceramsite was constructed for nitrate removal under an anaerobic atmosphere without an organic carbon source. Denitrifying bacteria, Pseudomonas sp. W1, Pseudomonas sp.

Autotrophic denitrification with anaerobic Fe(2+) oxidation by a novel Pseudomonas sp. W1.

In the present study, a novel Pseudomonas sp. W1 was characterized in terms of its ability to perform nitrate removal coupled with anaerobic Fe⁻¹ oxidation under autotrophic growth condition. The effects of operating parameters with respect to the initial solution pH, temperature and initial Fe⁻¹ concentration on nitrate removal were investigated by central composite design.

[Nitrate removal by a strain of nitrate-dependent Fe (II) -oxidizing bacteria].

A nitrate-dependent Fe(II)-oxidizing bacterial strain, named W5, was isolated from the sediment of the East Lake in Wuhan. Strain W5 was studied for its characteristics of denitrification and nitrogen removal. According to its physiological and biochemical characteristics and the analysis of its 16S rRNA gene sequence, strain W5 was identified as Microbacterium sp.