Phosphorus fate and dynamics in greywater biofiltration systems

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dc.contributor.authorFowdar, HSen_AU
dc.contributor.authorHatt, BEen_AU
dc.contributor.authorCresswell, Ten_AU
dc.contributor.authorHarrison, JJen_AU
dc.contributor.authorCook, PLMen_AU
dc.contributor.authorDeletic, Aen_AU
dc.date.accessioned2021-12-10T00:43:01Zen_AU
dc.date.available2021-12-10T00:43:01Zen_AU
dc.date.issued2017-01-09en_AU
dc.date.statistics2021-11-22en_AU
dc.description.abstractPhosphorus, a critical environmental pollutant, is effectively removed from stormwater by biofiltration systems, mainly via sedimentation and straining. However, the fate of dissolved inflow phosphorus concentrations in these systems is unknown. Given the growing interest in using biofiltration systems to treat other polluted waters, for example greywater, such an understanding is imperative to optimize designs for successful long-term performance. A mass balance method and a radiotracer, 32P (as H3PO4), were used to investigate the partitioning of phosphorus (concentrations of 2.5–3.5 mg/L, >80% was in dissolved inorganic form) between the various biofilter components at the laboratory scale. Planted columns maintained a phosphorus removal efficiency of >95% over the 15-week study period. Plant storage was found to be the dominant phosphorus sink (64% on average). Approximately 60% of the phosphorus retained in the filter media was recovered in the top 0–6 cm. The 32P tracer results indicate that adsorption is the immediate primary fate of dissolved phosphorus in the system (up to 57% of input P). Plant assimilation occurs at other times, potentially liberating sorption sites for processing of subsequent incoming phosphorus. Plants with high nutrient uptake capacities and the ability to efficiently extract soil phosphorus, for example Carex appressa, are, thus, recommended for use in greywater biofilters. © 2017 American Chemical Societyen_AU
dc.description.sponsorshipThis work was supported by the Commonwealth of Australia through the Cooperative Research Centre Programme and an Australian Institute of Nuclear Science and Engineering Research Grant awarded to A. Deletic for facilitating access to ANSTO.en_AU
dc.identifier.citationFowdar, H. S., Hatt, B. E., Cresswell, T., Harrison, J. J., Cook, P. L. M., & Deletic, A. (2017). Phosphorus fate and dynamics in greywater biofiltration systems. Environmental Science & Technology, 51(4), 2280-2287. doi:10.1021/acs.est.6b04181en_AU
dc.identifier.issn1520-5851en_AU
dc.identifier.issue4en_AU
dc.identifier.journaltitleEnvironmental Science & Technologyen_AU
dc.identifier.pagination2280-2287en_AU
dc.identifier.urihttps://doi.org/10.1021/acs.est.6b04181en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12427en_AU
dc.identifier.volume51en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectPhosphorusen_AU
dc.subjectFiltrationen_AU
dc.subjectDynamicsen_AU
dc.subjectPlantsen_AU
dc.subjectSoilsen_AU
dc.subjectLayersen_AU
dc.subjectBiomassen_AU
dc.titlePhosphorus fate and dynamics in greywater biofiltration systemsen_AU
dc.typeJournal Articleen_AU
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