磷酸铁膜对黄铁矿氧化抑制作用

黄骁; 蓝叶青

环境化学

磷酸铁膜对黄铁矿氧化抑制作用

黄骁, 蓝叶青. 磷酸铁膜对黄铁矿氧化抑制作用[J]. 环境化学, 1998, 17(4): 376-380.

引用本文:

黄骁, 蓝叶青. 磷酸铁膜对黄铁矿氧化抑制作用[J]. 环境化学, 1998, 17(4): 376-380.

Huang Xiao, Lan Yeqing. THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION[J]. Environmental Chemistry, 1998, 17(4): 376-380.

Citation:

Huang Xiao, Lan Yeqing. THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION[J]. Environmental Chemistry, 1998, 17(4): 376-380.

磷酸铁膜对黄铁矿氧化抑制作用

黄骁¹,
蓝叶青²

1.
南京农业大学资环学院南京 210095;
2.
南京农业大学理学院南京 210095
基金项目:
国家教委出国留学生资助项目

THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION

Huang Xiao¹,
Lan Yeqing²

1.
College of Resources and Environment, Nanjing, Agricultural University, Nanjing, 210095;
2.
College of Sciences, Nanjing Agricultural University, Nanjing, 210095
Fund Project:

摘要: 本文用动力学、表面分析技术方法研究在黄铁矿表面磷酸铁膜形成的可能性以及磷酸铁膜抑制黄铁矿的氧化作用.黄铁矿经0.3mol·l-1H2O2+0.01mol·l-1NaH2PO4+0.05mol·l-1NaAC(pH5.0)淋洗后,在其表面可形成一层磷酸铁膜,该膜能显著抑制黄铁矿的进一步氧化.结果还表明,在H2O2作用下,黄铁矿氧化有自催化氧化的特征,其氧化产物Fe3+能加快黄铁矿的氧化速率.
- 黄铁矿 /
- 酸性废水 /
- 磷酸铁膜
Abstract: In this study, the feasibility of formation of iron phosphate coating on the pyrite surfaces and its role of the suppression of pyrite oxidation were carried out by utilizing kinetics and surface analysis techniques. After leaching with a solution containig 0.3 mol·l-1H2O2+0. 01mol·l-1NaH2PO4+0.05mol·l-1NaAc(pH=5),iron phosphate coating formed on the pyrite surfaces, which could reduce the rate of pyrite oxidation greatly. In addition, the results proved that pyrite oxidation was characterized by the au-tocatalytic process. Fe3+released from the oxidation could accelerate the rate of pyrite oxidation.
- pyrite /
- acid mine drainage /
- iron phosphate coating

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黄骁, 蓝叶青. 磷酸铁膜对黄铁矿氧化抑制作用[J]. 环境化学, 1998, 17(4): 376-380.

引用本文:

黄骁, 蓝叶青. 磷酸铁膜对黄铁矿氧化抑制作用[J]. 环境化学, 1998, 17(4): 376-380.

Huang Xiao, Lan Yeqing. THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION[J]. Environmental Chemistry, 1998, 17(4): 376-380.

Citation:

Huang Xiao, Lan Yeqing. THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION[J]. Environmental Chemistry, 1998, 17(4): 376-380.

磷酸铁膜对黄铁矿氧化抑制作用

黄骁¹,
蓝叶青²

1. 南京农业大学资环学院南京 210095;
2. 南京农业大学理学院南京 210095

收稿日期: 1997-05-26

基金项目:

国家教委出国留学生资助项目

关键词:

黄铁矿 /
酸性废水 /
磷酸铁膜

摘要: 本文用动力学、表面分析技术方法研究在黄铁矿表面磷酸铁膜形成的可能性以及磷酸铁膜抑制黄铁矿的氧化作用.黄铁矿经0.3mol·l-1H2O2+0.01mol·l-1NaH2PO4+0.05mol·l-1NaAC(pH5.0)淋洗后,在其表面可形成一层磷酸铁膜,该膜能显著抑制黄铁矿的进一步氧化.结果还表明,在H2O2作用下,黄铁矿氧化有自催化氧化的特征,其氧化产物Fe3+能加快黄铁矿的氧化速率.

English Abstract

THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION

Huang Xiao¹,
Lan Yeqing²

1. College of Resources and Environment, Nanjing, Agricultural University, Nanjing, 210095;
2. College of Sciences, Nanjing Agricultural University, Nanjing, 210095

Received Date: 1997-05-26

Fund Project:

Keywords:

Abstract: In this study, the feasibility of formation of iron phosphate coating on the pyrite surfaces and its role of the suppression of pyrite oxidation were carried out by utilizing kinetics and surface analysis techniques. After leaching with a solution containig 0.3 mol·l-1H2O2+0. 01mol·l-1NaH2PO4+0.05mol·l-1NaAc(pH=5),iron phosphate coating formed on the pyrite surfaces, which could reduce the rate of pyrite oxidation greatly. In addition, the results proved that pyrite oxidation was characterized by the au-tocatalytic process. Fe3+released from the oxidation could accelerate the rate of pyrite oxidation.

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磷酸铁膜对黄铁矿氧化抑制作用

THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION

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磷酸铁膜对黄铁矿氧化抑制作用

English Abstract

THE ROLE OF IRON PHOSPHATE COATING IN THE SUPPRESSION OF PYRITE OXIDATION

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