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| 改性CMC聚合物吸附酸法地浸废水中的铀 | |
| 引用本文： | 周书葵,曾光明,刘迎九,杨金辉.改性CMC聚合物吸附酸法地浸废水中的铀[J].环境工程学报,2012,6(4):1093-1098. |
| 作者姓名： | 周书葵 曾光明 刘迎九 杨金辉 |
| 作者单位： | 1. 南华大学城市建设学院,衡阳421001／湖南大学环境科学与工程学院,长沙410082 2. 湖南大学环境科学与工程学院,长沙,410082 3. 南华大学城市建设学院,衡阳,421001 |
| 基金项目： | 国家自然科学基金资助项目(51174117)；湖南省科技厅项目(06JT1002，2010FJ4121) |
| 摘 要： | 在温度为70～80℃、单体质量浓度为30%～35%、羧甲基纤维素∶丙烯酸(质量比)为10∶2.5、反应时间为3.5～4 h条件下对CMC进行改性,接枝率可达68%以上。以改性前后的CMC为吸附剂,对模拟酸法地浸含铀废水进行了对比吸附实验研究。结果表明:改性CMC对铀吸附效果最佳的实验条件为:改性CMC质量浓度为0.10 g/L,温度为25℃,pH为5.0,吸附时间100 min,此时铀去除率达到了97.1%,比CMC改性后对铀的吸附率平均提高了近21%。影响吸附效果程度由强到弱的顺序为:改性CMC投加量、pH、吸附时间、温度。 |
| 关 键 词： | 改性CMC 吸附 含铀废水 |
Acid leaching uranium-containing wastewater treatment by modified CMC polymer |
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| Zhou Shukui,Zeng Guangming,Liu Yingjiu and Yang Jinghui.Acid leaching uranium-containing wastewater treatment by modified CMC polymer[J].Techniques and Equipment for Environmental Pollution Control,2012,6(4):1093-1098. | |
| Authors: | Zhou Shukui Zeng Guangming Liu Yingjiu and Yang Jinghui |
| Institution: | Zhou Shukui1,2 Zeng Guangming2 Liu Yingjiu1 Yang Jinghui1(1.School of Urban Construction,University of South China,Hengyang 421001,China; 2.School of Environment Science and Engineering,Hunan University,Changsha 410082,China) |
| Abstract: | The adsorption of uranium(VI) onto modified CMC was studied in this experiment.The result showed that the adsorption effect of modified CMC polymer was good,the grafting rate was above 68%,when temperature was 70~80 ℃,monomers quality concentration was 30%~35%,mass ratio was 10∶ 2.5,contact time was 3.5~4 h.The optimum experimental conditions were CMC quality concentration of 0.10 g/L,temperature of 25 ℃,pH=5.0,contact time of 100 min,under the optimal conditions,the removal rate of U(VI) was 97.1%,which increased about 21% on an average.Orthogenesis test is also showed that factors affecting adsorption from strong to weak were CMC dose,pH,contact time and temperature. |
| Keywords: | modified CMC adsorption uranium-containing wastewater |
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