| 重庆电厂炉前煤及飞灰中As元素在有机酸作用下的淋滤行为 |
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| 引用本文： | 刘惠永 张爱云. 重庆电厂炉前煤及飞灰中As元素在有机酸作用下的淋滤行为[J]. 重庆环境科学, 2000, 22(4): 29-32 |
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| 作者姓名： | 刘惠永 张爱云 |
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| 作者单位： | [1]清华大学热能工程系煤清洁燃烧国家重点实验室 [2]中国地质大学能源系 |
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| 基金项目： | 国家重点基础研究专项经费资助! ( G1 9990 2 2 2 ) |
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| 摘 要： | 采用模拟酸雨手段，突出有机酸对Ａｓ元素的淋出作用。分别配置ｐＨ＝４．４７的硝酸、乙酸及硝酸与乙酸的混酸三种淋滤液，对重庆电厂炉前煤及飞灰中的Ａｓ元素进行４０ｈ的淋滤实验，以探讨有机酸淋滤条件下Ａｓ元素的淋出行为。结果表明：有机酸淋滤液对炉前煤及飞灰中的Ａｓ元素具有较强的淋出作用，有机酸中Ｈ＾＋的缓冲释放作用是导致Ａｓ元素较强淋出率的主要因素。
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| 关 键 词： | 模拟 酸雨 有机酸 淋溶 飞灰 砷 大气污染 |
| 文章编号： | 1001-2141(2000)-0029-04 |
| 修稿时间： | 1999-11-15 |
Releasing of As in Coal and Fly Ash of Chongqing Power Plant under Organic Acid Conditions |
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| Liu Huiyong ,Xu Xuchang ,Yao Qiang ,Zhang Aiyun ,Yin Jinshuang ,Wang Xiuqin. Releasing of As in Coal and Fly Ash of Chongqing Power Plant under Organic Acid Conditions[J]. Chongqing Environmental Science, 2000, 22(4): 29-32 |
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| Authors: | Liu Huiyong Xu Xuchang Yao Qiang Zhang Aiyun Yin Jinshuang Wang Xiuqin |
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| Affiliation: | Liu Huiyong 1,Xu Xuchang 1,Yao Qiang 1,Zhang Aiyun 2,Yin Jinshuang 3,Wang Xiuqin 3 |
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| Abstract: | This paper mainly discussed the leaching characteristics of As in coal and fly ash of Chongqing Power Plant through the leaching experiments by using the simulated acid rain.HNO 3,CH 3COOH and mixed acid (with pH value 4.47)leaching solutions were provided to carry out the 40h leaching experiments.The results showed that large amounts of As were leached from coal and fly ash under organic acid leaching solutions,and H + buffering of organic acid played an important role on As releasing. |
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| Keywords: | Simulated acid rain Organic acid As Leaching. |
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