title: Chemo-denitrification of nitrate-polluted water.
abstract: Nitrate-nitrogen reduction was studied in the presence of ferrous iron and a copper catalyst. In a batch system, it was found that the reduction was very fast at pH 8.1 and slow at pH 7.5. A temporary accumulation of nitrate and hydroxylamine was noted. It was found that the reduction of nitrite-nitrogen in the presence of ferrous iron partly continued to ammonium. Decreasing the amount of reagents led to a slower reduction rate but a lower accumulation of nitrite and hydroxylamine. A continuous system was described whereby more than 50% of the initial nitrate could be removed.
authors.affiliation: Faculty of Agricultural Sciences, University of Ghent, Coupure 653, 9000 Ghent, Belgium.
authors.forename: K
authors.initials: K
authors.lastname: Van Hecke
authors.forename: O
authors.initials: O
authors.lastname: Van Cleemput
authors.forename: L
authors.initials: L
authors.lastname: Baert