MINERAL LEACHING OF NON-SULFIDE NICKEL ORES USING HETEROTROPHIC MICROORGANISMS

TZEFERIS, PG; AGATZINI, S; NERANTZIS, ET

dc.contributor.author	TZEFERIS, PG	en
dc.contributor.author	AGATZINI, S	en
dc.contributor.author	NERANTZIS, ET	en
dc.date.accessioned	2014-03-01T01:42:53Z
dc.date.available	2014-03-01T01:42:53Z
dc.date.issued	1994	en
dc.identifier.issn	0266-8254	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23966
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.classification	Microbiology	en
dc.title	MINERAL LEACHING OF NON-SULFIDE NICKEL ORES USING HETEROTROPHIC MICROORGANISMS	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	Laboratory studies were conducted on microbial leaching of non-sulphide nickel ores not amenable to conventional mineral processing operations. The results showed that extensive low-grade laterite domestic sources are generally amenable to bioleaching when micro-organisms were cultivated in the presence of the ore. Nickel recoveries were as high as 60% using hydroxycarboxylic acid producing strains of Aspergillus and Penicillium codes A3, P2. Cobalt recovery achieved was around 50%. Losses of soluble nickel in the fungal biomass were found to be 3.5-10.8%. Chemical analysis of the leach liquors showed the presence of significant amounts of citric, oxalic and other organic acids, indicating that leaching may be ascribed to the production of these metabolic products of fungal activity.	en
heal.publisher	BLACKWELL SCIENCE LTD	en
heal.journalName	LETTERS IN APPLIED MICROBIOLOGY	en
dc.identifier.isi	ISI:A1994NF73500010	en
dc.identifier.volume	18	en
dc.identifier.issue	4	en
dc.identifier.spage	209	en
dc.identifier.epage	213	en