| 煤矸石中砷的淋溶析出规律 |
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| 引用本文： | 苏华美,王智,刘志斌. 煤矸石中砷的淋溶析出规律[J]. 黑龙江科技学院学报, 2013, 0(5): 421-423 |
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| 作者姓名： | 苏华美 王智 刘志斌 |
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| 作者单位： | [1]辽宁工程技术大学环境科学与工程学院,辽宁阜新123000 [2]牙克石市安全生产监督管理局,内蒙古牙克石022150 |
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| 基金项目： | 国家自然基金煤炭联合基金项目（51174266） |
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| 摘 要： | 为了得到煤矸石中砷的析出规律,采用模拟天然降水的淋溶实验法对其进行研究.结果表明,淋溶液的pH值对煤矸石中砷的淋溶析出量影响较大,淋溶液的酸性越强,煤矸石中砷的析出量越大.初始淋溶时,砷的析出量相对较大,随着淋溶量的增加,砷的析出量逐渐降低.裸露堆放煤矸石的淋溶是砷污染的重要途径和影响生态环境的重要因素.
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| 关 键 词： | 煤矸石 砷 淋溶实验 |
Leaching release law of arsenic in coal gangue |
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| SU Huamei,WANG Zhi,LIU Zhibin. Leaching release law of arsenic in coal gangue[J]. Journal of Heilongjiang Institute of Science and Technology, 2013, 0(5): 421-423 |
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| Authors: | SU Huamei WANG Zhi LIU Zhibin |
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| Affiliation: | 1.College of Environmental Science ＆ Engineering, Liaoning Technical University, Fuxin 123000, China; 2.Yakeshi Administration of Work Safety, Yakeshi 022150, China;) |
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| Abstract: | Aimed at an insight into the law underlying arsenic release from coal gangue,this paper introduces the study of the law using leaching experiment marked by simulating natural precipitation.The results show that,the pH value of leaching liquor exerts a great influence on the arsenic amount leached from coal gangue,meaning that a higher acidity of leaching liquor produces a greater arsenic amount leached from coal gangue.The initial leaching triggers a relatively large arsenic content precipitated from coal gangue,followed by the gradually decreasing arsenic content due to the increase in leaching amount.The leaching of coal gangue exposed to air is the main contributor to arsenic pollution and an important factor affecting ecological environment. |
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| Keywords: | coal gangue arsenic leaching experiment |
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