کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4769309 1425535 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bioleaching of the mixed oxide-sulfide copper ore by artificial indigenous and exogenous microbial community
ترجمه فارسی عنوان
بیولوژی لعاب مخلوط اکسید سولفید مس مخلوط توسط جامعه مصنوعی بومی و بیرونی میکروبی
کلمات کلیدی
بومی خارجی سنگ معدن اکسید سولفید، ضدعفونی کردن، بستر انرژی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Bioleaching has been widely applied to recover sulfide minerals, however, little is known about the bioleaching behavior and mechanism of mixed oxide-sulfide copper ore with high-oxidative ratio. The leaching efficiency of artificial indigenous and exogenous microbial communities on a mixed oxide-sulfide copper ore with and without energy substrate was investigated. The results indicated that extra energy substrate was needed when bioleaching was applied to this kind of ore. The variation of leaching parameters caused by indigenous community was inferior to that caused by exogenous ones due to its lower activity. The leaching efficiency of sulfide part induced by indigenous strains was superior to that induced by exogenous ones, due to the stronger colonization ability of indigenous strains. It verified that both microbial activity and colonization ability were important properties affecting leaching efficiency. Sulfur oxidizers, which can oxidize sulfur or polysulfide formed on mineral surface and decrease leachate pH, played a more important role than ferrous oxidizers in bioleaching of high-oxidative oxide-sulfide ore.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 169, May 2017, Pages 41-46
نویسندگان
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