Browsing Civil Engineering (Scholarly Articles) by Author "Healy, Mark G."
Now showing items 41-60 of 122
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An evaluation of the general composition and critical raw material content of bauxite residue in a storage area over a twelve-year period
Cusack, Patricia B.; Courtney, Ronan; Healy, Mark G.; O’ Donoghue, Lisa M.T.; Ujaczki, Éva (Elsevier, 2018-10-09)Bauxite residue, the by-product produced in the alumina industry, is being produced at an estimated global rate of approximately 150 million tonnes per annum. Currently, the reuse of bauxite residue is low (∼2%), due to ... -
An examination of maximum legal application rates of dairy processing and associated STRUBIAS fertilising products in agriculture
Shi, W.; Fenton, Owen; Ashekuzzaman, S. M.; Daly, K.; Leahy, J. J.; Khalaf, N.; Hu, Y.; Chojnacka, K.; Numviyimana, C.; Healy, Mark G. (Elsevier, 2021-10-09)The dairy industry produces vast quantities of dairy processing sludge (DPS), which can be processed further to develop second generation products such as struvite, biochars and ashes (collectively known as STRUBIAS). These ... -
Factors affecting nitrate distribution in shallow groundwater under a beef farm in South Eastern Ireland
Healy, Mark G. (Elsevier, 2009-07)Groundwater contamination was characterised using a methodology which combines shallow groundwater geochemistry data from 17 piezometers over a 2 yr period in a statistical framework and hydro-geological techniques. Nitrate-N ... -
Field assessment of coconut-based activated carbon systems for the treatment of herbicide contamination
McGinley, John; Healy, Mark G.; Scannell, Shane; Ryan, Paraic C.; Harmon O'Driscoll, Jenny; Mellander, Per-Erik; Morrison, Liam; Siggins, Alma (Elsevier, 2023-12-03)Once released into the environment, herbicides can move through soil or surface water to streams and groundwater. Filters containing adsorbent media placed in fields may be an effective solution to herbicide loss in the ... -
A framework for determining unsaturated zone time lags at catchment scale
Vero, Sara E.; Healy, Mark G.; Henry, Tiernan; Creamer, Rachel E.; Ibrahim, Tristan G.; Richards, Karl G.; Mellander, Per-Erik; McDonald, Noeleen T.; Fenton, Owen (Elsevier Masson, 2016-12-10)The responses of waterbodies to agricultural programmes of measures are frequently delayed by hydrological time lags through the unsaturated zone and groundwater. Time lag may therefore, impede the achievement of remediation ... -
Future phosphorus: advancing new '2D' allotropes and growing a sustainable bio economy
Jarvie, Helen P.; Flaten, Don; Sharpley, Andrew N.; Kleinman, Peter J. A.; Healy, Mark G.; King, Stephen M. (Crop Science Society of America with American Society of Agronomy and Soil Science Society of America, 2019-07-11)With more than 40 countries currently proposing to boost their national bioeconomies, there is no better time for a clarion call for a new bioeconomy, which, at its core, tackles the current disparities and inequalities ... -
Habit suitability assessment of constructed wetlands for the Smooth Newt (Lissotriton vulgaris [Linnaeus, 1758]): a comparison with natural wetlands
Mulkeen, Collette J.; Gibson-Brabazon, S.; Carlin, C..; Williams, C.D.; Healy, Mark G.; Mackey, P.; Gormally, Michael J. (Elsevier, 2017-06-22)Given the current decline of natural wetlands worldwide and the consequent negative impacts on amphibians, wetlands constructed for the treatment of wastewaters have the potential to play a role in the protection of these ... -
Harvesting effects on biomass and nutrient retention in phragmites australis in a free-water surface constructed wetland in western Ireland
Healy, Mark G.; Newell, J.; Rodgers, M. (The Royal Irish Academy, 2008-06-26)The aim of this study was to examine the seasonal variation in biomass, total nitrogen (Tot-N) and total phosphorus (Tot-P) content of Phragmites australis in a 3-cell free-water surface (FWS) constructed wetland in western ... -
Harvesting effects on biomass and nutrient retention in Phragmites australis in a free-water surface constructed wetland in western Ireland
Healy, Mark G.; Newell, J; Rodgers, M. (2007)The aim of this study was to examine the seasonal variation in biomass, total nitrogen (Tot-N) and total phosphorus (Tot-P) content of Phragmites australis in a 3-cell free-water surface (FWS) constructed wetland in western ... -
Holistic evaluation of field-scale denitrifying bioreactors as a basis to improve environmental quality.
Healy, Mark G. (Association of Crop, Soil and Environmental Societies (ACSES), 2015-10-02)Denitrifying bioreactors effectively convert nitrate-nitrogen (NO3-N) to di-nitrogen and thereby protect water quality in agricultural landscapes. In the present study, the performance of a pilot-scale bioreactor (50 m ... -
The impact of alternating drainage and inundation cycles on geochemistry and microbiology of intact peat cores
Healy, Mark G.; Siggins, Alma; Potito, Aaron P.; Molloy, Karen; Potito, Aaron P.; O'Leary, D.; Daly, E.; Callery, O. (Elsevier, 2022-11-02)The rewetting of degraded peatlands has been adopted as a method to address climate change. Concerns have been raised about the effects of peat inundation and drying cycles, in more extreme climate events, on the potential ... -
The Impact of Biochar Addition on Nutrient Leaching and Soil Properties from Tillage Soil Amended with Pig Manure
Troy, Shane M.; O'Flynn, Cornelius J.; Healy, Mark G. (Springer, 2014-02)The application of pig manure to a tillage soil can result in pollution of surface and groundwater bodies. Countries in the European Union are required to comply with the Water Framework Directive, which states that all ... -
Impact of biochar addition to soil on greenhouse gas emissions following pig manure application
Troy, Shane M.; O' Flynn, Cornelius J.; Healy, Mark G. (2013)The application of biochar produced from wood and crop residues, such as sawdust, straw, sugar bagasse and rice hulls, to highly weathered soils under tropical conditions has been shown to influence soil greenhouse gas ... -
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 ... -
Impact of chemically amended pig slurry on greenhouse gas emissions, soil properties and leachate.
O'Flynn, Cornelius J.; Healy, Mark G. (2013)The effectiveness of chemical amendment of pig slurry to ameliorate phosphorus (P) losses in runoff is well studied, but research mainly has concentrated only on the runoff pathway. The aims of this study were to investigate ... -
Impact of historical legacy pesticides on achieving legislative goals in Europe
McGinley, J.; Healy, Mark G.; Ryan, P. C.; O'Driscoll, Harmon; Mellander, P. E.; Morrison, L.; Siggins, A. (Elsevier, 2023-02-26)Pesticides are widely used in agriculture to optimise food production. However, the movement of pesticides into water bodies negatively impacts aquatic environments. The European Union (EU) aims to make food systems fair, ... -
Impact of P inputs on source-sink P dynamics of sediment along an agricultural ditch network
Ezzati, Golnaz; Fenton, Owen; Healy, Mark G.; Christianson, Laura E.; Feyereisen, Gary; Thornton, S. F.; Chen, Qing; Fan, Bingqian; Ding, J.; Daly, Karen (Elsevier, 2019-12-19)Phosphorus (P) loss from intensive dairy farms is a pressure on water quality in agricultural catchments. At farm scale, P sources can enter in-field drains and open ditches, resulting in transfer along ditch networks and ... -
The impact of service-learning on voluntary and community organizations in the west of Ireland
Healy, Mark G.; McIlrath, Lorraine (NUI Maynooth, 2014-04)The aim of this study was to investigate the impact of student volunteers on community organizations and to identify deficits in training within service learning modules which, if addressed, could enable community organizations ...