Compositional variation and hazards of wood ash in Ireland

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dc.contributor.advisor O'Halloran, John en
dc.contributor.advisor Jansen, Marcel A. K. en
dc.contributor.advisor Van Pelt, Frank en Jagodzinski, Lucas S. 2017-09-20T12:02:47Z 2017-09-20T12:02:47Z 2016 2016
dc.identifier.citation Jagodzinski, L. S. 2016. Compositional variation and hazards of wood ash in Ireland. PhD Thesis, University College Cork. en
dc.identifier.endpage 179 en
dc.description.abstract The lack of physico-chemical as well as ecotoxicological data on wood energy ash in Ireland hampers its development as a secondary raw material. This study compiled the first compositional account of the energy wastes and leachates as they accrue from ten untreated wood-fired power plants in Ireland. Bottom and fly ash as well as their leachates, were distinguished for five boilers that allowed for separate sampling. Composition of separate wood bottom and fly ash over time was investigated in a case study on a combined heat and power (CHP) model power plant. Samples of these ashes were examined for their quality as plant nutrient sources and their toxicological properties in an aquatic test battery. The MICROTOX test, Pseudokirchneriella subspicata growth inhibition test, Daphnia magna immobilization assay, Lemna minor growth inhibition and Oncorhynchus mykiss acute and prolonged survival tests comprised the ecotoxicological test battery. Further to this, the two ash types from the case study site were sieve fractionated and tested with MICROTOX and L. minor. Leachates were more variable in composition than their parent solid ashes. A large part of the variability and chemical hazards observed in the wood energy waste stemmed from the fly ash portion therein. Segregation of bottom and fly ash allows for higher compositional consistency and thus better predictability of the materials’ properties. The case study site ashes were variable over time, but some compositional consistency is given. Ecotoxicological assessment revealed fly ash from the case study site to be more toxic than bottom ash. Single cell organisms within the test battery were most likely to be adversely affected. Measurable effects of ash on aquatic species were affected by the test regime (native leachates were more toxic than pH neutralized counterparts). Given the observed variability, a case-by-case evaluation of ashes from distinct boilers (over-time) is recommended. en
dc.description.sponsorship Department of Agriculture, Food and the Marine (Grant COFORD 2008/RD/ASH) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2016, Lucas Simon Jagodzinski. en
dc.rights.uri en
dc.subject Wood ash en
dc.subject Wood energy en
dc.subject Ecotoxicology en
dc.subject Chemical composition en
dc.subject Wood ash fertilization en
dc.subject Waste acceptance criteria en
dc.title Compositional variation and hazards of wood ash in Ireland en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en No embargo required en
dc.description.version Accepted Version
dc.contributor.funder National Council for Forest Research and Development en
dc.contributor.funder Department of Agriculture, Food and the Marine en
dc.description.status Not peer reviewed en Biological, Earth & Environmental Sciences en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
dc.internal.conferring Summer 2017 en

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© 2016, Lucas Simon Jagodzinski. Except where otherwise noted, this item's license is described as © 2016, Lucas Simon Jagodzinski.
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