Fungal bio-leaching of nickel from Indonesian low grade limonitic ore
This paper presents preliminary investigation results of the bioleaching of Indonesian low-grade nickel laterite ore using fungal consortia. Local food production wastes of tofu, tempeh and molasses were used as the media for the fungals life. Series of leaching tests by using a rotating shaker have been conducted under variations of the ore particle size, pulp density and shaker speed. The investigation results show the highest level of nickel extraction percentage of 25. 5％ , obtained from the leaching test at a pulp density of 2. 5％ , ore particle size of -60 +80＃ and shaking speed of 180 minute1, after 7 days. Increasing the pulp density from 2. 5％ to 5％ and 10％ tends to decrease the extraction percentage of nickel. The optimal ore particle size for nickel extraction was found to be - 60 + 80 ＃ in which further size reduction tends to increase iron dissolution rather nickel extraction. The investigation results provide significant insight into the beneficial use of certain tropical fungi and waste media for bioleaching of nickel laterite ore.
fungal bioleaching limonite ores nickel extraction
Mubarak M. Z. Astuti W. Chaerun S. K.
Department of Metallurgical Engineering, Faculty of Mining and Petroleum Engineering, Institut Tekno School of Life Sciences and Technology, Institut Teknologi Bandung, Jl. Ganesha 10,40132, Bandung, W
国际会议
The 19th International Biohydrometallurgy Symposium(第19届国际生物湿法冶金大会 IBS2011)
长沙
英文
671-676
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）