doi: 10.1007/s0025-8Įlberling B, Askaer L, Jørgensen CJ et al (2011) Linking soil O 2, CO 2, and CH 4 concentrations in a Wetland soil: implications for CO 2 and CH 4 fluxes. Environ Technol 20:1147–1153Įlberling B, Balić-Žunić T, Edsberg A (2003) Spatial variations and controls of acid mine drainage generation. doi: 10.1016/S0169-7722(00)00126-1ĭincer A, Kargi F (1999) Salt inhibition of nitrification and denitrification in saline wastewater.

Geochim Cosmochim Acta 57:3867–3883ĭevlin J, Eedy R, Butler B (2000) The effects of electron donor and granular iron on nitrate transformation rates in sediments from a municipal water supply aquifer. doi: 10.3354/ame01574Ĭanfield DE, Thamdrup B, Hansen JW (1993) The anaerobic degradation of organic matter in Danish coastal sediments: iron reduction, manganese reduction, and sulfate reduction. doi: 10.1016/0168-6496(96)00051-7īurgin A, Hamilton S, Jones S, Lennon J (2012) Denitrification by sulfur-oxidizing bacteria in a eutrophic lake. J Geol Soc London 157:711–714īrunet R, Garcia-Gil LJ (1996) Sulfide-induced dissimilatory nitrate reduction to ammonia in anaerobic freshwater sediments. doi: 10.1042/BST20120102īottrell SH, Parkes RJ, Cragg BA, Raiswell R (2000) Isotopic evidence for anoxic pyrite oxidation and stimulation of bacterial sulphate reduction in marine sediments. Addition of high surface area synthetically precipitated iron sulfide (FeS x) to the aquifer sediment with the lowest natural FeS x reactivity increased both the relative fraction of NO 3 − reduction linked to MISON from approximately 30–100 % and the absolute rates by a factor of 17, showing that the potential for MISON-related NO 3 − reduction is environmentally significant and rate limited by the availability of reactive FeS x.īosch J, Meckenstock RU (2012) Rates and potential mechanism of anaerobic nitrate-dependent microbial pyrite oxidation. An apparent salinity limitation to MISON was observed in the most brackish environment. Approximately 1/3 of the net NO 3 − reduction was caused by MISON in three of the four environments despite the presence of organic carbon in the sediment. In this study, we experimentally demonstrate the co-occurrence of microbial iron sulfide oxidation by NO 3 − (MISON) and other NO 3 −-depleting processes in a range of contrasting sediment types: sandy groundwater aquifer, non-managed minerotrophic freshwater peat and two brackish muddy sediments. Nitrate (NO 3 −) reduction processes are important for depleting the NO 3 − load from agricultural source areas before the discharge water reaches surface waters or groundwater aquifers.

Mettler toledo mp220 electrode