| 污染土样中六价铬和总铬的浸出条件探究 |
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| 引用本文： | 王东琴,李 超,张松柏.污染土样中六价铬和总铬的浸出条件探究[J].无机盐工业,2016,48(2):60. |
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| 作者姓名： | 王东琴 李 超 张松柏 |
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| 作者单位： | 1.山西省生态环境研究中心，山西太原 030009；2.山西国环环境科技有限公司 |
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| 摘 要： | 采用单因素实验分别考察了固液比、时间、温度、pH等因素对含铬污染土样中六价铬及总铬浸出效果的影响。结果表明，随着固液比的增大，六价铬的浸出率也相应增加，但固液比不宜超过1∶20；延长时间有利于六价铬的浸出，但浸出时间不宜超过13 h；一定的温度范围内，六价铬的浸出率随温度的升高而增加，但温度不宜超过
60 ℃；在强酸性及强碱性条件下均有利于六价铬的浸出，与强碱性条件相比，强酸性条件更有利于六价铬的浸出，浸出率可以达到87%；总铬的浸出效果随这些因素的变化并不明显。
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| 关 键 词： | 六价铬 总铬 浸出条件 |
Leaching conditions of hexavalent chromium and total chromium in chromium polluted soil samples |
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| WANG Dong-Qin,LI Chao,ZHANG Song-Bai.Leaching conditions of hexavalent chromium and total chromium in chromium polluted soil samples[J].Inorganic Chemicals Industry,2016,48(2):60. |
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| Authors: | WANG Dong-Qin LI Chao ZHANG Song-Bai |
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| Affiliation: | 1.Shanxi Research Center for Eco-Environmental Sciences，Taiyuan 030009；
2.Shanxi Guohuan Environmental Science and Technology Co.，Ltd. |
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| Abstract: | The influences of solid-liquid ratio，time，temperature，and pH etc. on the leaching effect of hexavalent chromium and total chromium in the chromium polluted soil samples were investigated by single factor test.The experimental results showed that with the increase of the solid-liquid ratio，the leaching rate of hexavalent chromium also increased accordingly，but the solid-liquid ratio should not exceed 1∶20；prolong the leaching time was good for the leaching rate of hexavalent chromium，but the leaching time should not exceed 13 h；raise the temperature in a certain range was also good for the leaching rate of hexavalent chromium，but temperature should not over 60 ℃；under the condition of strong acid and strong alkali，they were both conducive to hexavalent chromium leaching.Compared with the strong alkali，strong acid condition of hexavalent chromium leaching effect was better，and leaching rate can reach 87%；the total chromium′s leaching effect following the changes of these factors were not obvious. |
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| Keywords: | hexavalent chromium total chromium leaching conditions |
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