Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests

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dc.contributor.authorOpitz, Alex
dc.contributor.authorBroadhurst, Jenny
dc.contributor.authorHarrison, Sue
dc.date.accessioned2017-09-11T09:11:03Z
dc.date.available2017-09-11T09:11:03Z
dc.date.issued2015-11
dc.description.abstractCharacterisation of the risk of acid rock drainage is typically achieved through the quantification of acid-generating and acid-consuming components present within a sample using initial laboratory-scale, chemical static tests. These static tests, however, consider ARD generation under chemical conditions and do not account for the role of micro-organisms. Their focus is exclusively on the net potential for acid generation, with no account of metal deportment or the relative rate of acid generation and consumption. The present study investigates the ARD potential of two ultrafine coal wastes samples using the standard static tests as well as the UCT biokinetic test to account for microbial ARD generation. The deportment of metal species under each test condition was also considered. The UCT biokinetic test results supported the static test classification, providing preliminary kinetic data on the ARD generation. Sequential chemical extraction tests allowed for differentiation of the host minerals according to their leaching potentials, providing supporting evidence for the deportment of metal species under the characterisation tests, thereby improving the knowledge base on which to classify coal wastes as benign or otherwise.en_ZA
dc.identifier.apacitationOpitz, A., Broadhurst, J., & Harrison, S. (2015). Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests. <i>Advanced Materials Research</i>, http://hdl.handle.net/11427/25141en_ZA
dc.identifier.chicagocitationOpitz, Alex, Jenny Broadhurst, and Sue Harrison "Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests." <i>Advanced Materials Research</i> (2015) http://hdl.handle.net/11427/25141en_ZA
dc.identifier.citationOpitz A. K. B., Broadhurst J. L. and Harrison S. T. L. (2015). Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests. Advanced Materials Research, Biotechnologies in Mining Industry and Environmental Engineering, Volume 1130, 635-639en_ZA
dc.identifier.issn1662-8985en_ZA
dc.identifier.ris TY - Journal Article AU - Opitz, Alex AU - Broadhurst, Jenny AU - Harrison, Sue AB - Characterisation of the risk of acid rock drainage is typically achieved through the quantification of acid-generating and acid-consuming components present within a sample using initial laboratory-scale, chemical static tests. These static tests, however, consider ARD generation under chemical conditions and do not account for the role of micro-organisms. Their focus is exclusively on the net potential for acid generation, with no account of metal deportment or the relative rate of acid generation and consumption. The present study investigates the ARD potential of two ultrafine coal wastes samples using the standard static tests as well as the UCT biokinetic test to account for microbial ARD generation. The deportment of metal species under each test condition was also considered. The UCT biokinetic test results supported the static test classification, providing preliminary kinetic data on the ARD generation. Sequential chemical extraction tests allowed for differentiation of the host minerals according to their leaching potentials, providing supporting evidence for the deportment of metal species under the characterisation tests, thereby improving the knowledge base on which to classify coal wastes as benign or otherwise. DA - 2015-11 DB - OpenUCT DP - University of Cape Town J1 - Advanced Materials Research LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 SM - 1662-8985 T1 - Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests TI - Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests UR - http://hdl.handle.net/11427/25141 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/25141
dc.identifier.vancouvercitationOpitz A, Broadhurst J, Harrison S. Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests. Advanced Materials Research. 2015; http://hdl.handle.net/11427/25141.en_ZA
dc.languageengen_ZA
dc.publisherTrans Tech Publicationsen_ZA
dc.publisher.departmentCentre for Bioprocess Engineering Research
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.sourceAdvanced Materials Researchen_ZA
dc.source.urihttps://www.scientific.net/AMR/Details
dc.subject.otherAcid rock drainage
dc.subject.othermetal deportment
dc.subject.othercoal fines
dc.subject.otherwaste characterisation
dc.titleAssessing environmental risks associated with ultrafine coal wastes using laboratory-scale testsen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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