Browsing College of Engineering and Informatics by Author "Healy, Mark G."
Now showing items 21-40 of 129
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Different depth sand filters for laboratory treatment of synthetic wastewater with concentrations close to measured septic tank effluent
Walsh, G.; Rodgers, Michael; Healy, Mark G. (2011)The objective of this study was to apply hydraulic and chemical oxygen demand (COD) loading rates at the upper limits of the design criteria for buried sand filters to test the sand filter depth design criteria. Over a ... -
The distribution, type, popularity, size and availability of river-run gravel and crushed stone for use in land drainage systems, and their suitability for mineral soils in Ireland
Byrne, I.; Healy, Mark G.; Fenton, O.; Tuohy, P. (Compuscript for Teagasc (Agriculture and Food Development Authority, Ireland), 2022-06-24)The performance of land drainage systems installed in mineral soils in Ireland is highly variable, and is dependent on, amongst other factors, the quality and suitability of the aggregate used. In Ireland, aggregate for ... -
Economic analysis of pig manure treatment options in Ireland.
Troy, Shane M.; Healy, Mark G. (2012)An economic analysis was performed on treatment options for pig manure in Ireland. Costs were based on a 500 sow integrated pig farm producing 10,500 m3 of manure per year at 4.8 % dry matter. The anaerobic digestion of ... -
Effect of chemical amendments to dairy soiled water and time between application and rainfall on phosphorus and sediment losses in runoff
Serrenho, Ana; Healy, Mark G. (2012)Dairy soiled water (DSW) is a dilute, low nutrient effluent produced on Irish dairy farms through the regular washing down of milking parlours and holding areas. In Ireland, there is no closed period for the land application ... -
Effect of chemical amendments to dairy soiled water and time between application and rainfall on phosphorus and sediment losses in runoff
Serrenho, Ana; Healy, Mark G. (Elsevier, 2012-05-18)Dairy soiled water (DSW) is a dilute, low nutrient effluent produced on Irish dairy farms through the regular washing down of milking parlours and holding areas. In Ireland, there is no closed period for the land application ... -
Effect of rainfall interval on runoff losses of biosolids and meat and bone meal when applied to a grassland soil
Lucid, Joseph D.; Healy, Mark G. (Springer, 2014)This study assessed runoff losses following laboratory rainfall simulation on a grassland soil at two time intervals (48 and 216 h) after a single application of biosolids and meat and bone meal (MBM). The treatments were: ... -
Effect of sawdust addition and composting of feedstock on renewable energy and biochar production from pyrolysis of anaerobically digested pig manure
Shane M. Troy, Tereza Nolan, James J. Leahy, Peadar G. Lawlor, Mark G. Healy, Witold Kwapinski; Nolan, Tereza; Leahy, James J.; Lawlor, Peadar G.; Healy, Mark G.; Kwapinski, Witold (2013) -
Effect of sawdust addition on composting of separated raw and anaerobically digested pig manure
Troy, Shane M.; Leahy, James J.; Healy, Mark G. (Elsevier, 2012-06)Manures need the addition of carbon-rich bulking agents to conserve N during composting, which increases the cost of the composting process. The recommended proportion of manure / sawdust, based on a carbon (C): nitrogen ... -
Effect of sawdust addition on composting of separated raw and anaerobically digested pig manure
Troy, Shane M.; Healy, Mark G. (Elsevier, 2012)Manures need the addition of carbon-rich bulking agents to conserve N during composting, which increases the cost of the composting process. The recommended proportion of manure/sawdust, based on a carbon (C):nitrogen (N) ... -
Effect of sawdust addition on composting of separated raw and anaerobically digested pig manure
Troy, Shane M.; Healy, Mark G. (Elsevier, 2012)Manures need the addition of carbon-rich bulking agents to conserve N during composting, which increases the cost of the composting process. The recommended proportion of manure / sawdust, based on a carbon (C): nitrogen ... -
Effects of fertiliser on phosphorus pools in soils with contrasting organic matter content: A fractionation and path analysis study
González Jiménez, J.L.; Healy, Mark G.; Daly, Karen (Elsevier, 2018-12-05)With the intensification of agricultural production in many European countries, more marginal soils with elevated organic matter (OM) content are being brought into cultivation. However, little is known about the transformations ... -
Effects of substrate stress and light intensity on enhanced biological phosphorus removal in a photo-activated sludge system
Mohamed, A.Y.A.; Welles, L.; Siggins, A.; Healy, Mark G.; Brdjanovic, D.; Rada-Ariza, A.M.; Lopez-Vazquez, C.M. (Elsevier, 2020-11-06)Photo-activated sludge (PAS) systems are an emerging wastewater treatment technology where microalgae provide oxygen to bacteria without the need for external aeration. There is limited knowledge on the optimal conditions ... -
Effects of wastewater pre-treatment on clogging of an intermittent sand filter
Mohamed, A.Y.A.; Tuohy, P.; Healy, Mark G.; Ó hUallacháin, D.; Fenton, O.; Siggins, A. (Elsevier, 2023-03-11)Intermittent sand filters (ISFs) are widely used in rural areas to treat domestic and dilute agricultural wastewater due to their simplicity, efficacy and relative low cost. However, filter clogging reduces their operational ... -
The efficiency of a sequencing batch reactor (SBBR) in organic carbon and phosphorus removal
Prendergast, John; Rodgers, Michael; Healy, Mark G. (Taylor & Francis, 2005)A laboratory sequencing batch biofilm reactor (SBBR), operated for a period of 158 days, was used to treat domestic-strength synthetic effluent. The biofilm. reactor comprised a bulk fluid reactor, a biofilm plastic module, ... -
Enhancement of bauxite residue as a low-cost absorbent for phosphorus in aqueous solution, using seawater and gypsum treatments.
Cusack, Patricia B.; Healy, Mark G.; Ryan, Paraic C.; Burke, Ian T.; O'Donoghue, Lisa M.T.; Ujaczki, Éva; Courtney, Ronan (Elsevier, 2018-01-20)Bauxite residue (red mud), the by-product produced in the alumina industry, is being produced at an estimated global rate of approximately 150Mt per annum. Due to its highly alkaline nature, many refineries use neutralisation ... -
Erodibility of hill peat
Mulqueen, J.; Rodgers, M.; Marren, N.; Healy, Mark G. (Teagasc, 2006-06-30)The energy necessary to entrain soil in water depends on the soil strength. Once entrained, the settling velocity of the eroded soil in water is of fundamental importance to the processes of sediment transport and deposition. ... -
Estimation of Maximum Biosolids and Meat and Bone Meal Application to a Low P Index Soil and a Method to Test for Nutrient and Metal Losses
Lucid, Joseph D.; Fenton, Owen; Healy, Mark G. (2013)The aim of this study was to develop (1) a method for the calculation of the maximum legal rate at which meat and bone meal (MBM) and biosolids should be applied to land, which took into account the soil phosphorus (P) ... -
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 amendments to control phosphorus losses in runoff from dairy soiled water.
Fenton, Owen; Serrenho, Ana; Healy, Mark G. (Springer, 2011-12-01)Amendments with the potential to reduce phosphorus (P) losses from agricultural grassland arising from the land application of dairy-soiled water (DSW) were investigated. Optimal application rates were studied, and associated ... -
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 ...