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

 

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dc.contributor.author Opitz, Alex
dc.contributor.author Broadhurst, Jenny
dc.contributor.author Harrison, Sue
dc.date.accessioned 2017-09-11T09:11:03Z
dc.date.available 2017-09-11T09:11:03Z
dc.date.issued 2015-11
dc.identifier.citation Opitz 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, 635-639 en_ZA
dc.identifier.issn 1662-8985 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/25141
dc.description.abstract 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. en_ZA
dc.language eng en_ZA
dc.publisher Trans Tech Publications en_ZA
dc.source Advanced Materials Research en_ZA
dc.source.uri https://www.scientific.net/AMR/Details
dc.subject.other Acid rock drainage
dc.subject.other metal deportment
dc.subject.other coal fines
dc.subject.other waste characterisation
dc.title Assessing environmental risks associated with ultrafine coal wastes using laboratory-scale tests en_ZA
dc.type Journal Article en_ZA
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Centre for Bioprocess Engineering Research
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Opitz, 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/11427/25141 en_ZA
dc.identifier.chicagocitation Opitz, 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/11427/25141 en_ZA
dc.identifier.vancouvercitation Opitz 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.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


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