Browsing Civil Engineering by Author "Daly, K."
Now showing items 1-7 of 7
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Dairy processing sludge and co-products: a review of present and future re-use pathways in agriculture
Shi, W.; Healy, Mark G.; Ashekuzzaman, S.M.; Daly, K.; Leahy, J.J.; Fenton, Owen (Elsevier, 2021-06-22)The dairy industry is one of the largest global producers of wastewater and generates huge volumes of dairy processing sludge (DPS). There are two main types of DPS, lime-treated dissolved air floatation sludge and ... -
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 ... -
An integrated connectivity risk ranking for phosphorus and nitrogen along agricultural open ditches to inform targeted and specific mitigation management
Opoku, D. G.; Healy, Mark G.; Fenton, Owen; Daly, K.; Condon, T.; Tuohy, Patrick (Frontiers Media, 2024-02-19)On dairy farms with poorly drained soils and high rainfall, open ditches receive nutrients from different sources along different pathways which are delivered to surface water. Recently, open ditches were ranked in terms ... -
Mineral fertiliser equivalent value of dairy processing sludge and derived biochar using ryegrass (Lolium perenne L.) and spring wheat (Triticum aestivum)
Shi, W.; Healy, Mark G.; Ashekuzzaman, S. M.; Daly, K.; Fenton, Owen (Elsevier, 2022-08-20)As supply chains of chemical fertilisers become more precarious, raw or derived bio-based fertilisers (herein referred to as bio-fertilisers) from the dairy processing industry could be good alternatives. However, their ... -
Phosphorus and nitrogen leaching from an organic and a mineral soil receiving single and split dairy slurry applications: A laboratory column experiment
González Jiménez, J. L.; Daly, K.; Healy, Mark G. (Springer, 2022-11-12)Purpose Intensification of farming means that organic soils, of low phosphorus (P) holding capacity, are being brought into production. Consequently, farmers may have to adjust their fertiliser application regimes to ... -
Phosphorus fertiliser equivalent value of dairy processing sludge-derived STRUBIAS products using ryegrass (Lolium perenne L.) and spring wheat (Triticum aestivum)
Shi, W.; Fenton, Owen; Ashekuzzaman, S. M.; Daly, K.; Leahy, J. J.; Khalaf, N.; Chojnacka, K.; Numviyimana, C.; Warchoł, J.; Healy, Mark G. (Wiley, 2023-12-11)Struvite, biochar and ash products (collectively known as STRUBIAS) products derived from different waste streams are used as fertilisers in agriculture. Raw dairy processing sludge (DPS) shows promise as bio-based ... -
Split phosphorus fertiliser applications as a strategy to reduce incidental phosphorus losses in surface runoff
González Jiménez, J.L.; Daly, K.; Roberts, W.M.; Healy, Mark G. (Elsevier, 2019-04-24)Organic soils have low sorption capacities for phosphorus (P), and may pose a risk of P loss to water if P applications to these soils coincide with runoff events. Little is known about the magnitude of exports of P in ...