| Possibility of using strain F9（Serratia marcescens） as a bio-collector for hematite flotation |
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| 作者姓名： | Hui-fen Yang Tian Li Yan-hong Chang Hui Luo Qiong-yao Tang |
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| 作者单位： | [1]Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China [2]State Key Laboratory for High-Efficiency Mining and Safety of Metal Mines, Ministry of Education, Beijing 100083, China |
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| 基金项目： | financially supported by the National Natural Science Foundation of China （No. 51074017） |
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| 摘 要： | In this study, we characterized strain F9 and evaluated the interaction between strain F9 and hematite by scanning electron microscopy（SEM）, Fourier transform infrared spectrophotometry（FTIR）, zeta potential, flotation, and other methods. The results showed that strain F9 belongs to Serratia marcescens. This brevibacterium had CH2, CH3, and hydroxyl groups on its cell wall, which imparted a strong hydrophobic and negative charge. Adsorption of strain F9 reduced the zeta potential of the hematite surface and increased the hydrophobicity of the hematite surface, thereby generating hydrophobic hematite agglomerates. At least four groups on strain F9 interacted with the hematite surface, which contributed to chemical interactions of carboxylic groups and hydrophobic association among hydrophobic hematite particles. The possible use of strain F9 as a bio-collector for hematite flotation was proved.
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| 关 键 词： | 粘质沙雷氏菌 赤铁矿 浮选 生物 菌株 傅里叶变换红外光谱法 收藏家 化学相互作用 |
Possibility of using strain F9 (Serratia marcescens) as a bio-collector for hematite flotation |
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| Hui-fen Yang,Tian Li,Yan-hong Chang,Hui Luo,Qiong-yao Tang.Possibility of using strain F9 (Serratia marcescens) as a bio-collector for hematite flotation[J].International Journal of Minerals,Metallurgy and Materials,2014,21(3):210-215. |
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| Authors: | Hui-fen Yang Tian Li Yan-hong Chang Hui Luo Qiong-yao Tang |
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| Institution: | 1. Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing, 100083, China
2. State Key Laboratory for High-Efficiency Mining and Safety of Metal Mines, Ministry of Education, Beijing, 100083, China
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| Abstract: | In this study, we characterized strain F9 and evaluated the interaction between strain F9 and hematite by scanning electron microscopy (SEM), Fourier transform infrared spectrophotometry (FTIR), zeta potential, flotation, and other methods. The results showed that strain F9 belongs to Serratia marcescens. This brevibacterium had CH2, CH3, and hydroxyl groups on its cell wall, which imparted a strong hydrophobic and negative charge. Adsorption of strain F9 reduced the zeta potential of the hematite surface and increased the hydrophobicity of the hematite surface, thereby generating hydrophobic hematite agglomerates. At least four groups on strain F9 interacted with the hematite surface, which contributed to chemical interactions of carboxylic groups and hydrophobic association among hydrophobic hematite particles. The possible use of strain F9 as a bio-collector for hematite flotation was proved. |
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| Keywords: | microorganisms Serratia marcescens flotation hydrophobicity hematite |
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