Browsing Civil Engineering (Scholarly Articles) by Author "Brennan, Raymond B."
Now showing items 1-13 of 13
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Evaluating long-term performance of low-cost adsorbents using small-scale adsorption column experiments
Callery, Oisin; Healy, Mark G.; Rognard, F.; Barthelemy, L.; Brennan, Raymond B. (Elsevier, 2016-05-31)This study investigated a novel method of predicting the long-term phosphorus removal performance of large-scale adsorption filters, using data derived from short-term, small-scale column experiments. The filter media ... -
Evaluation of chemical amendments to control phosphorus losses from dairy slurry
Brennan, Raymond B.; Rodgers, Michael; Healy, Mark G. (Wiley, 2011)Land application of dairy slurry can result in incidental losses of phosphorus (P) to runoff in addition to increased loss of P from soil as a result of a buildup in soil test P (STP). An agitator test was used to identify ... -
Evaluation of chemical amendments to control phosphorus losses from dairy slurry.
Brennan, Raymond B.; Rodgers, Michael; Healy, Mark G. (Soil Use and Management, 2011-06-01)The aim of this paper is to identify chemicals with the potential to reduce P losses from agricultural grassland arising from the land application of dairy cattle slurry. It also aims to identify optimal application rates ... -
The impact of chemical amendment of dairy cattle slurry before land application on soil phosphorus dynamics
Brennan, Raymond B.; Healy, Mark G. (Taylor and Francis, 2014-08-22)Application of dairy cattle slurry to agricultural soils, particularly those with high phosphorus (P) status or vulnerability to runoff, can increase P loss to waterbodies, which may accelerate eutrophication. While the ... -
Impact of chemical amendment of dairy cattle slurry on phosphorus, suspended sediment and metal loss to runoff from a grassland soil
Brennan, Raymond B.; Healy, Mark G. (2011)Emerging remediation technologies such as chemical amendment of dairy cattle slurry have the potential to reduce phosphorus (P) solubility and consequently reduce P losses arising from land application of dairy cattle ... -
Impact of chemical amendment of dairy cattle slurry on phosphorus, suspended sediment and metal loss to runoff from a grassland soil.
Brennan, Raymond B.; Healy, Mark G. (Science of the Total Environment, 2011-11-01)Emerging remediation technologies such as chemical amendment of dairy cattle slurry have the potential to reduce phosphorus (P) solubility and consequently reduce P losses arising from land application of dairy cattle ... -
Incidental phosphorus and nitrogen loss from grassland plots receiving chemically amended dairy cattle slurry.
Brennan, Raymond B.; Healy, Mark G. (Elsevier, 2012-09)Chemical amendment of dairy cattle slurry has been shown to effectively reduce incidental phosphorus (P) losses in runoff; however, the effects of amendments on incidental nitrogen (N) losses are not as well documented. ... -
Influence of soil phosphorus status, texture, pH and metal content on the efficacy of amendments to pig slurry in reducing phosphorus losses
O’ Flynn, Cornelius J.; Fenton, Owen; Wall, David; Brennan, Raymond B.; McLaughlin, Mike J.; Healy, Mark G. (Wiley, 2017-12-13)Cost effective strategies for using chemically amended organic fertilizers need to be developed to minimize nutrient losses in surface and groundwater. Coupling specific soil physical and chemical characteristics with ... -
Metal concentrations in lime stabilised, thermally dried and anaerobically digested sewage sludges.
Healy, Mark G.; Brennan, Raymond B.; Morrison, Liam (Elsevier ScienceDirect, 2015-11-25)Cognisant of the negative debate and public sentiment about the land application of treated sewage sludges ( biosolids ), it is important to characterise such wastes beyond current regulated parameters. Concerns may be ... -
The short-term effects of management changes on watertable position and nutrients in shallow groundwater in a harvested peatland forest
Finnegan, Joanne; Regan, John T.; Fenton, Owen; Lanigan, Gary J.; Brennan, Raymond B. (Elsevier, 2014-09-01)Management changes such as drainage, fertilisation, afforestation and harvesting (clearfelling) of forested peatlands influence watertable (WT) position and groundwater concentrations of nutrients. This study investigated ... -
Treatment of landfill leachate in municipal wastewater treatment plants and impacts on effluent ammonium concentrations.
Brennan, Raymond B.; Clifford, Eoghan; Devroedt, E.; Morrison, Liam; Healy, Mark G. (Elsevier, 2016-12-05)Landfill leachate is the result of water percolating through waste deposits that have undergone aerobic and anaerobic microbial decomposition. In recent years, increasingly stringent wastewater discharge requirements have ... -
Use of amendments in a peat soil to reduce phosphorus losses from forestry operations
Callery, Oisin; Brennan, Raymond B.; Healy, Mark G. (Elsevier, 2015-10-18)Forestry harvesting on peats is known to result in significant losses of soil phosphorus (P) to adjacent waters, and the issue is becoming an increasingly serious concern as peatland forest stocks mature and reach harvestable ... -
Use of zeolite with alum and PAC amendments to mitigate runoff losses of P, N and suspended solids from agricultural wastes applied to land
Healy, Mark G.; Fenton, Owen; Murnane, John; Brennan, Raymond B. (ASA, CSSA, and SSSA, 2015)Diffuse pollutant losses containing phosphorus (P), nitrogen (N) and suspended solids (SS) can occur when agricultural wastes are applied to soil. This study aimed to mitigate P, N and SS losses in runoff from grassed ...