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| 负载纳米氧化铁活性炭去除水中重金属铜实验研究 |
| Experimental study on removal of Cu(Ⅱ) by nanosized iron oxide loaded activated carbon |
| 投稿时间：2013-08-10 |
| DOI：10.13259/j.cnki.eri.2014.02.002 |
| 中文关键词: 活性炭 纳米氧化铁 重金属 铜 |
| 英文关键词:activated carbon nanosized iron oxide heavy metal copper |
| 基金项目: |
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| 摘要点击次数: 2462 |
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| 中文摘要: |
| 采用两种制备方法（M1、M2），分别对三种活性炭（AC1、AC2、AC3）进行负载纳米氧化铁实验研究.通过不同材料对Cu（Ⅱ）吸附量的筛选实验，得出 AC2-M2对Cu（Ⅱ）吸附量最大.对AC2-M2进行的静态吸附实验研究结果表明：pH值在1~6范围内，AC2-M2对Cu（Ⅱ）的吸附量随pH值增大而增加；AC2-M2对Cu（Ⅱ）的吸附规律符合Langmuir吸附等温模型和准二级动力学模型，与AC2相比，其最大吸附量提升了约113%，其吸附过程分为快速吸附、慢速吸附、动态平衡三个阶段；AC2-M2对Cu（Ⅱ）的吸附是自发吸热过程，吸附机理主要以物理吸附为主，并同时存在化学吸附. |
| 英文摘要: |
| Nanosized iron oxide was loaded onto three kinds of activated carbon (AC1, AC2, AC3) by two preparation methods (M1, M2). Within these materials, the results of screening tests of adsorption showed that AC2-M2 has the maximum adsorption capacity of Cu(Ⅱ). Batch adsorption experiment was carried out on Cu(Ⅱ) adsorption by AC2-M2. It was found that Cu(Ⅱ) adsorption capacity of AC2-M2 increased with solution pH from 1 to 6. The adsorption behavior of Cu(Ⅱ) on AC2-M2 obeyed Langmuir isotherm model and pseudo-second-order kinetic model. Compared with AC2, the maximum Cu(Ⅱ) capacity of AC2-M2 increased approximately 113%. The adsorption process was divided into fast adsorption stage, slow adsorption stage and dynamic balance stage. Adsorption thermodynamic data indicated that Cu(Ⅱ) adsorption onto AC2-M2 was a spontaneous endothermic process, and the adsorption mechanism mainly depended on physical adsorption and chemical adsorption existed at the same time. |
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