| 生态修复植物蜈蚣草中砷的回收 |
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| 引用本文： | 潘雅妹,廖辉伟,周远,雷会利,黄晋芳.生态修复植物蜈蚣草中砷的回收[J].化工环保,2013,33(1):63-66. |
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| 作者姓名： | 潘雅妹 廖辉伟 周远 雷会利 黄晋芳 |
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| 作者单位： | 西南科技大学;材料科学与工程学院，四川;绵阳;621010 |
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| 摘 要： | 采用管式炉高温热解-NaOH-Na2CO3混合液碱浸-CuSO4·5H2O沉淀的方法回收生态修复植物蜈蚣草中的砷，最终得到产品砷酸铜。该方法的最佳工艺条件为：热解温度600 ℃，热解时间30 min，CaO加入量（CaO与蜈蚣草的质量比）8%； m（NaOH）∶m（Na2CO3）=1∶3，碱浸温度70 ℃， 碱浸时间2 h， 固液比1∶10； 沉淀反应pH 5， 沉淀反应温度70 ℃。采用该方法处理生态修复植物蜈蚣草，得到产品砷酸铜的纯度为93%，砷回收率达88%。
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| 关 键 词： | 蜈蚣草 生态修复 热解 碱浸法 砷酸铜 综合利用 |
| 收稿时间： | 2013-03-14 |
Recovery of Arsenic From Hyperaccumulator Pteris Vittata L. |
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| Pan Yamei
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Liao Huiwei
,
Zhou Yuan
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Lei Huili
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Huang Jinfang.Recovery of Arsenic From Hyperaccumulator Pteris Vittata L.[J].Environmental Protection of Chemical Industry,2013,33(1):63-66. |
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| Authors: | Pan Yamei Liao Huiwei Zhou Yuan Lei Huili Huang Jinfang |
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| Affiliation: | College of Material Science and Engineering，Southwest University of Science and Technology，Mianyang Sichuan 621010，China |
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| Abstract: | Arsenic was recovered from hyperaccumulator pteris vittata L.by the process of high temperature pyrolysis in tubular furnace-alkali leaching with NaOH-Na2CO3 solution- precipitation with CuSO4·5H2O. The final product is copper arsenate. The optimum process conditions are as follows：pyrolysis temperature 600 ℃，pyrolysis time 30 min，CaO dosage 8%，m(NaOH)∶m(Na2CO3)=1∶3，alkali leaching temperature 70 ℃，alkali leaching time 2 h，ratio of solid to liquid 1∶10；precipitation reaction pH 5，precipitation reaction temperature 70℃. The purity of the product copper arsenate is 93% and the total recovery rate of arsenic is 88%. |
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| Keywords: | pteris vittata L ecological remediation pyrolysis alkali leaching copper arsenate comprehensive utilization |
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