Denitrification coupled to pyrite oxidation and implications for groundwater quality: A case study at Oostrum (The Netherlands)
Because pyrite oxidation increases the aqueous concentrations of sulphate and trace metals and also modifies the pH, it can significantly affect groundwater quality. This study focuses on the occurrence and effects of denitrification in 1996 and 2006 at Oostrum, the Netherlands. Results shows denitrification coupled to pyrite oxidation as the main pathway removing nitrate from groundwater in the agricultural area and the compositional trends are similar over a 10-year period, although the nitrate concentrations dropped due to decreasing fertilizer input. In contrast, in the forested area the concentrations of pollutants (nitrate, chloride and trace metals) have risen since 1996, as a result of contaminated groundwater flow originating from the agricultural area.
Y.Zhang C.P.Slomp P.Van Cappellen H.P.Broers H.F.Passier
Faculty of Geosciences, Utrecht University, The Netherlands TNO - Built Environment and Geosciences, Utrecht, The Netherlands
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
1153-1156
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）