کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1744620 | 1522154 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reductive dissolution of manganese from manganese dioxide ore by autotrophic mixed culture under aerobic conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
Reductive leaching of manganese from manganese dioxide ore has become increasingly important for production of electrolytic manganese. The anaerobic bioleaching has long received great concerns for reductive extraction of Mn by heterotrophic microorganisms in the presence of sacchariferous substances. Alternatively, the reductive dissolution of manganese from manganese dioxide ore by autotrophic mixed culture under aerobic conditions was investigated in this work. The results showed that the autotrophic mixed culture was capable of reductive liberation of Mn in the presence of cheap sulfur and pyrite. 99% of Mn extraction was achieved by the mixed culture at 10% of pulp density after 72-96 h under 24 g/L of mixed energy substrates, initial pH at 1.0 and pH control of process at 2.0. The diffusion controlled model ï¬tted best for describing dissolution of Mn. The acid dissolution was the dominating mechanism for great improvement in leaching efficiency from 78% without pH control to 99% with pH control.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 92, 1 April 2015, Pages 54-64
Journal: Journal of Cleaner Production - Volume 92, 1 April 2015, Pages 54-64
نویسندگان
Baoping Xin, Ting Li, Xin Li, Zhigang Dan, Fuyuan Xu, Ning Duan, Yongtao Zhang, Haiyan Zhang,