| 赤泥处理含镉废水的影响因素 |
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| 引用本文： | 王林江,文小年,谢襄漓.赤泥处理含镉废水的影响因素[J].桂林工学院学报,2006,26(4):543-546. |
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| 作者姓名： | 王林江 文小年 谢襄漓 |
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| 作者单位： | 1. 桂林工学院,有色金属及材料加工新技术教育部重点实验室,广西,桂林,541004;桂林工学院,材料与化学工程系,广西,桂林,541004
2. 桂林工学院,材料与化学工程系,广西,桂林,541004 |
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| 基金项目： | 国家自然科学基金资助项目(40672026)，广西区教育厅项目[桂教科2003(22)] |
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| 摘 要： | 研究了赤泥对模拟废水中镉离子的吸附作用,以及反应时间、溶液中镉离子初始浓度、赤泥的掺加量、温度和pH值等因素对吸附的影响.结果表明,赤泥对镉离子有很好的吸附作用,对废水中镉离子的去除率最大可达99.4%.溶液中镉离子初始浓度不但影响吸附率而且影响吸附量,最大吸附量可达5.34 mg/g.在碱性环境中,该反应是吸附和沉淀共同作用的结果.该吸附以化学吸附为主,符合二级动力学方程和Freundlich吸附等温式.
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| 关 键 词： | 赤泥 吸附 镉离子 影响因素 |
| 文章编号： | 1006-544X(2006)04-0543-04 |
| 收稿时间： | 2005-11-15 |
| 修稿时间： | 2005年11月15 |
Influence factors of cadmium waste water disposal with red mud |
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| WANG Lin-jiang,WEN Xiao-nian,XIE Xiang-li.Influence factors of cadmium waste water disposal with red mud[J].Journal of Guilin University of Technology,2006,26(4):543-546. |
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| Authors: | WANG Lin-jiang WEN Xiao-nian XIE Xiang-li |
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| Affiliation: | a. Key Laboratory of New Processing Technology for Nonferrous Materials,Ministry of Education,b. Department of Materials and Chemistry Engineering, Guilin University of Technology, Guilin 541004, China |
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| Abstract: | The adsorption of red mud to the cadmium ion in the simulative waste water is studied.The influence factors on adsorption such as contact time,red mud content in solution,initial cadmium ion content in solution,temperature and the value of pH are tested.The results show that red mud exhibits good adsorption capability to cadmium ion,the maximum adsorption ratio would be 99.4%.The initial cadmium ion content influences both the adsorption ratio and the adsorption quantity.The maximum adsorption quantity would be 5.34 mg/g.The reaction is the result of adsorption and deposition together in strongly alkalescent condition.The adsorption reaction is chemistry adsorption and follows the second grade dynamics equation and the Freudlich equation. |
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| Keywords: | red mud adsorption cadmium ion influence factor |
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