Browsing Civil Engineering by Author "|~|6201984|~|"
Now showing items 1-7 of 7
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Carbon and nitrogen dynamics and greenhouse gas emissions in constructed wetlands treating wastewaters: a review
Healy, Mark G. (2016-02-17)The removal efficiency of carbon (C) and nitrogen (N) in constructed wetlands (CWs) is very inconsistent and frequently does not reveal whether the removal processes are due to physical attenuation or whether the different ... -
Catalytic potential of selected metal ions for bioleaching, and potential techno-economic and environmental issues: a critical review
Pathak, Ashish; Morrison, Liam; Healy, Mark G. (Elsevier, 2017-01-06)Bioleaching is considered to be a low-cost, eco-friendly technique for leaching valuable metals from a variety of matrixes. However, the inherent slow dissolution kinetics and low metal leaching yields have restricted its ... -
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 ... -
Modelling stone column installation in an elasto-viscoplastic soil
McCabe, Bryan A.; Sexton, Brian G. (Taylor & Francis, 2014-12-31)The majority of numerical studies investigating stone column performance have used “wished-in-place” columns (no installation effects) in conjunction with elastoplastic soil models (no viscous effects). In the first part ... -
Predicting the propagation of concentration and saturation fronts in fixed-bed filters
Callery, Oisin; Healy, Mark G. (IWA Publishing, 2017-07-05)The phenomenon of adsorption is widely exploited across a range of industries to remove contaminants from gases and liquids. Much recent research has focused on identifying low-cost adsorbents which have the potential to ... -
Statistical grain size effects in fretting crack initiation
Ashton, P.J.; Harte, Annette M.; Leen, Sean B. (Elsevier, 2016-09-20)A crystal plasticity computational framework is developed and validated to investigate the microstructure sensitivity of crack initiation in fretting. Randomly distributed microstructure geometries are incorporated into a ... -
Stone column settlement performance in structured anisotropic clays: the influence of creep
Sexton, Brian G.; McCabe, Bryan A.; Karstunen, Minna; Sivasithamparam, Nallathamby (Elsevier, 2016-07-15)The recently developed elasto-viscoplastic Creep-SCLAY1S model has been used in conjunction with PLAXIS 2D to investigate the effectiveness of vibro-replacement in a creep-prone clay. The Creep-SCLAY1S model accounts for ...