The Bioleaching Characteristics of Chalcopyrite with Different Genetic Types

Autor:	Jiang Kang Wen, Bo Wei Chen, Jing Bai, Biao Wu, Song Tao Huang
Rok vydání:	2013
Předmět:	Metallosphaera cuprina Copper extraction techniques Microbial population biology Community composition Chalcopyrite Chemistry Environmental chemistry Thermophile visual_art Bioleaching General Engineering visual_art.visual_art_medium Mineralogy
Zdroj:	Advanced Materials Research. 825:443-446
ISSN:	1662-8985
DOI:	10.4028/www.scientific.net/amr.825.443
Popis:	The copper extraction yield from thermophilic bioleaching of chalcopyrite depends on temperature, pH, and the oxidation-reduction potential (ORP), the activity of the thermophile used, as well as on the different genetic type of the chalcopyrite used. The bioleaching characteristics of chalcopyrite from marine volcanic type and porphyry type, and the influence of genetic type on microbial community were studied. The results indicated that the bioleaching of chalcopyrite is controlled by the ORP rather than by the pH. The thermophiles composition of marine volcanic type bioleaching wasMetallosphaeracuprinaandSulfobus spHB59.Metallosphaeracuprinawas the dominate bacteria during porphyry chalcopyrite bioleaching. The different leachability between marine volcanic type and porphyry type is attributed to their nature which caused by genetic type.
Databáze:	OpenAIRE
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