| 柠檬酸活化赤泥对亚甲基蓝染料废水的吸附净化作用 |
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| 引用本文： | 黄凯,李一飞,焦树强,朱鸿民.柠檬酸活化赤泥对亚甲基蓝染料废水的吸附净化作用[J].中国有色金属学报,2011,21(12). |
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| 作者姓名： | 黄凯 李一飞 焦树强 朱鸿民 |
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| 作者单位： | 北京科技大学冶金与生态工程学院,北京,100083 |
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| 基金项目： | 教育部留学归国人员科研启动基金资助项目(11140065),教育部长江学者和创新团队发展计划资助项目(IRT0708) |
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| 摘 要： | 采用一种活化赤泥吸附剂用于水溶液中亚甲基蓝的吸附净化.考察吸附剂用量、pH值、亚甲基蓝浓度、吸附温度和吸附时间对活化赤泥吸附性能的影响规律.结果表明:采用稀柠檬酸活化处理可显著提高赤泥对染料分子的吸附效率；吸附率随吸附剂用量增加而增加,随初始亚甲基蓝浓度和温度升高而降低；测得活化赤泥对亚甲基蓝的最大吸附容量为30 mg/g,吸附过程符合Langmuir等温吸附模型；吸附动力学过程可用准二级动力学方程描述,计算出吸附过程的表观活化能为9.88 kJ/mol.对吸附过程焓和熵值的计算结果表明,活化赤泥对水溶液中亚甲基蓝染料的吸附是一个自发的放热过程.
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| 关 键 词： | 赤泥 柠檬酸 活化 吸附 亚甲基蓝 |
Adsorptive removal of methylene blue dye wastewater from aqueous solution using citric acid activated red mud |
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| HUANG Kai
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LI Yi-fei
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BAO Shu-qiang
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ZHU Hong-min.Adsorptive removal of methylene blue dye wastewater from aqueous solution using citric acid activated red mud[J].The Chinese Journal of Nonferrous Metals,2011,21(12). |
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| Authors: | HUANG Kai LI Yi-fei BAO Shu-qiang ZHU Hong-min |
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| Affiliation: | HUANG Kai,LI Yi-fei,JIAO Shu-qiang,ZHU Hong-min (School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | The activated red mud was prepared as the adsorbent for the removal of methylene blue(MB),from aqueous solution by the batch adsorption technique under different operational parameters including adsorbent dosage,pH,initial dye concentration,contact temperature and time.The results demonstrate that the adsorption percentage of the citric acid activated red mud is improved evidently,and increases with the increase of activated red mud dosage,white decreases with the increase of initial MB concentration and te... |
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| Keywords: | red mud citric acid activation adsorption methylene blue |
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