http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nitrate removal from irrigation run-off using packed-bed bioreactors
2.0, and 2.5 gpm). Efficiency of N03- and N02- removal was
3.5:1 C:N as the electron donor, and NH4NO3, Supplied the
anaerobic environment (1.0 to 2.0 ppm DO). The seed colony
and 200 ppm for N03- (96% removal) and 1.0 gpm and 50 ppm for
and N02- removal was observed along 16 treatment combinations
concentration step changes from 150 to 100 ppm and 100 to 50
concentrations remained steady with slight removal (6.3 -1 1.
Denitrification of irrigation runoff was achieved using a
electron acceptor (NO3-). The fate of N03-, N02-, and NW, as
equilibration, was also observed at 1.0 gpm with negative
fixed colony of facultative, heterotrophic bacteria in an
flow rate of 1.0 gpm (0.58 hour HRT). The majority of the
Hydrogenophaga, Chromobacterium, Rhodobacter, Acidovorox, and
I%) occurring in the first two regions. Efficiency of N03-
Intermediate regions reduced 5.2-16.5%. Ammonium
Methylobacterium. A sub-irrigation growth study utilizing
N02-(O.3 ppm effluent). Transient response time, or colony
N03- (76.5%) were removed in the first region of the columns
observed to be greatest at a treatment combination of 1.0 gpm
of 1.0 gpm and 150 ppm was performed on Catharanthus roseus.
ppm. Approximately two days were needed for equilibration to
produced (1.0 ppm) within the first region of the columns
regions of the columns at an influent of I 00 ppm N03- and a
runoff holding ponds. Methanol was supplied at a ratio of
steady state. Microbial species dominating in the bioreactor
the discharged bioreactor water from a treatment combination
they passed up the columns was analyzed along four equal
Those treated with bioreactor water showed severe chlorosis
was derived from stirred pond water acquired from golf course
were identified as those in the genera Pseudomonas,
with subsequent regions removing 4.8-7.6%. Nitrite was
with the majority (21.12%) being removed in the final region.
Issued also on microfiche from Lange Micrographics.