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dc.contributor.authorCallery, Oisín
dc.contributor.authorHealy, Mark G.
dc.identifier.citationCallery, O., & Healy, M. G. (2019). A novel method to rapidly assess the suitability of water treatment residual and crushed concrete for the mitigation of point and nonpoint source nutrient pollution. Resources, Conservation & Recycling: X, 2, 100010. doi:
dc.description.abstractFreshwater ecosystems worldwide are at risk of becoming degraded as a result of excessive inputs of phosphorus (P) associated with terrestrial activities. This study describes a novel methodology to rapidly assess the potential of low-cost adsorbents which might be used to combat this issue. The ability of aluminum drinking water treatment residual (Al-WTR) and crushed concrete (CC) to remove P from dairy wastewater (DW) and forestry runoff (wastewaters representative of point and nonpoint P pollution sources, respectively) was assessed. In addition to predicting the longevity of these media in large-scale filters, potential risks associated with their use were also examined. The results indicate that both CC and Al-WTR show promise for use in removing P from forestry runoff, however the raised pH of effluent from CC filters may pose an environmental concern. Al-WTR showed greater promise than CC for the treatment of DW due to its higher adsorption capacity at high concentrations. Small releases of aluminum (13.63-96.17 µg g-1) and copper (5.25-31.9 µg g-1) were observed from both media when treating forestry runoff, and Al-WTR also released a small amount of nickel (0.16 µg g-1). Approximately 50% of total metal loss occurred during the first 25% of total filter loading, indicating that pre-washing of the media would help prevent metal release. These results indicate that field-scale tests are warranted for the treatment of both wastewaters with Al-WTR; CC is likely to be unsuitable for either forestry runoff or DW due to its effects on pH and its short lifespan.en_IE
dc.description.sponsorshipThe first author would like to acknowledge the Irish Research Council (GOIPG/2013/75) for funding.en_IE
dc.relation.ispartofResources Conservation And Recyclingen
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland
dc.subjectLow-cost adsorbents; adsorption; phosphorus; wastewater treatmenten_IE
dc.subjectLow-cost adsorbentsen_IE
dc.subjectwastewater treatmenten_IE
dc.titleA novel method to rapidly assess the suitability of water treatment residual and crusted concrete for the mitigation of point and nonpoint source nutrient pollutionen_IE
dc.contributor.funderIrish Research Councilen_IE
dc.local.contactMark Healy, Room Eng-1038, Civil Engineering, Col Of Engineering & Informatics, Nui Galway. 5364 Email:

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