{"refrec":{"BRefID":209865,"RR":"<b>Spiteri, C.; Slomp, C. P. ; Regnier, P.; Meile, C.; Van Cappellen, P.</b> (2007). Modelling the geochemical fate and transport of wastewater-derived phosphorus in contrasting groundwater systems. <i>J. Contam. Hydrol. 92(1-2)</i>: 87-108. <a href=\"http://dx.doi.org/10.1016/j.jconhyd.2007.01.002\" target=\"_blank\">dx.doi.org/10.1016/j.jconhyd.2007.01.002</a>","BEntID":201837,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>J. Contam. Hydrol. 92(1-2)</i>: 87-108. <a href=\"https://dx.doi.org/10.1016/j.jconhyd.2007.01.002\" target=\"_blank\">https://dx.doi.org/10.1016/j.jconhyd.2007.01.002</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Spiteri, C.; Slomp, C. P. ; Regnier, P.; Meile, C.; Van Cappellen, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Spiteri, C. <i>et al.</i>","Englishabstract":"A 1D reactive transport model (RTM) is used to obtain a mechanistic understanding of the fate of phosphorus (P) in the saturated zone of two contrasting aquifer systems. We use the field data from two oxic, electron donor-poor, wastewater-impacted, sandy Canadian aquifers, (Cambridge and Muskoka sites) as an example of a calcareous and non-calcareous groundwater system, respectively, to validate our reaction network. After approximately 10 years of wastewater infiltration, P is effectively attenuated within the first 10 m downgradient of the source mainly through fast sorption onto calcite and Fe oxides. Slow, kinetic sorption contributes further to P removal, while precipitation of phosphate minerals (strengite, hydroxyapatite) is quantitatively unimportant in the saturated zone. Nitrogen (N) dynamics are also considered, but nitrate behaves essentially as a conservative tracer in both systems. The model-predicted advancement of the P plume upon continued wastewater discharge at the calcareous site is in line with field observations. Model results suggest that, upon removal of the wastewater source, the P plume at both sites will persist for at least 20 years, owing to desorption of P from aquifer solids and the slow rate of P mineral precipitation. Sensitivity analyses for the non-calcareous scenario (Muskoka) illustrate the importance of the sorption capacity of the aquifer solids for P in modulating groundwater N:P ratios in oxic groundwater. The model simulations predict the breakthrough of groundwater with high P concentrations and low N:P ratios after 17 years at 20 m from the source for an aquifer with low sorption capacity (< 0.02% w/w Fe(OH)<sub>3</sub>). In this type of system, denitrification plays a minor role in lowering the N:P ratios because it is limited by the availability of labile dissolved organic matter.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Modelling the geochemical fate and transport of wastewater-derived phosphorus in contrasting groundwater systems","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Phosphorus; Nitrogen; N:P ratio; Groundwater; Sorption capacity; Reactive transport modelling","OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2018-05-17","DateCreate":"2011-11-23","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000247415600006","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.jconhyd.2007.01.002"},"refs":null,"anarec":{"AnaID":209865,"PubliDate":2007,"Pagination":"87-108","XtraPublOfAnaID":null,"ISBN":null,"Volume":"92","Issue":"1-2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":209858,"SerRR":"Journal of Contaminant Hydrology. Elsevier: Tokyo; Oxford; New York; Amsterdam.  ISSN 0169-7722; e-ISSN 1873-6009","StandardTitleSer":"Journal of Contaminant Hydrology","ISSN":"0169-7722","AbbrevSer":"J. Contam. Hydrol.","StandardTitleMon":null,"StartPage":87,"Pages":22,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Spiteri","Firstname":"Claudette","Initials":"C.","Affiliation":"Department of Earth Sciences–Geochemistry, Faculty of Geosciences, Utrecht University","Discriminator":null,"CorporateFlag":0,"BEntID":201837,"AutID":136138,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Universiteit Utrecht; Faculteit Geowetenschappen; Department of Earth Sciences - Geochemistry","ORCID":null,"PersID":null,"InsID":8544},{"AutName":"Slomp","Firstname":"Caroline","Initials":"C. 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