| 改性活性炭对废水中Cr（VI）吸附的研究 |
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| 引用本文： | 杨汝婷,李璇.改性活性炭对废水中Cr（VI）吸附的研究[J].甘肃科学学报,2012(3):70-73. |
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| 作者姓名： | 杨汝婷 李璇 |
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| 作者单位： | 兰州石化职业技术学院;兰州寰球工程公司 |
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| 摘 要： | 研究了改性活性炭对水溶液中Cr（VI）的吸附作用,运用正交分析法考查活性炭用量、废水pH值及吸附时间对Cr（VI）去除率的影响.筛选出改性活性炭最佳工艺条件：改性活性炭单位吸附量为6.7 mg Cr6＋/g活性炭,吸附时间2 h,pH值4,净化率为99.97%.相比原活性炭,改性后活性炭的吸附性更强,净化率提高了20%,吸附平衡时间缩短了66%.
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| 关 键 词： | 改性活性炭 吸附 Cr（VI） 正交实验设计 |
Adsorption of Hexavalent Chromium Ions by Modified Active Carbon in Wastewater |
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| YANG Ru-ting,LI Xuan.Adsorption of Hexavalent Chromium Ions by Modified Active Carbon in Wastewater[J].Journal of Gansu Sciences,2012(3):70-73. |
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| Authors: | YANG Ru-ting LI Xuan |
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| Institution: | 1.Lanzhou Vocational College of Petrochemical Technology,Lanzhou 730060,China; 2.Lanzhou Huanqiu Contracting Engineering Corporation,Lanzhou 730060,China) |
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| Abstract: | A static test is carried out according to the capacity of adsorbents removing chromium.First,the adsorbability of the original active carbon is studied.When the pH of chromium-containing wastewater is 4,the dosage of modified active carbon is 0.15 g,the absorbing time is 6 h,the removal rate of Cr could be higher than 79.23%.When the nitric acid(1∶1) is modified on the ash,the pH of chromium-containing wastewater is 4,the dosage of modified active carbon is 0.15 g,the absorbing time is 2 h,the removal rate of Cr could be as high as 99.97%.Compared with the original actived carbon,the modified ash has a higher adsorbability. |
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| Keywords: | modified active carbon adsorption Cr(VI) static test |
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