| 单质硫改性介孔炭对水溶液中汞的吸附性能研究 |
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| 引用本文： | 殷俊,陈光辉,崔皓,王静,陶仙聪,郑建中.单质硫改性介孔炭对水溶液中汞的吸附性能研究[J].环境工程学报,2009,3(12):2148-2152. |
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| 作者姓名： | 殷俊 陈光辉 崔皓 王静 陶仙聪 郑建中 |
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| 作者单位： | 1. 南京大学环境学院,污染控制与资源化研究国家重点实验室,南京210093
2. 南京大学现代分析中心,南京,210093 |
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| 基金项目： | 国家自然科学基金资助项目（20540420542,20377021） |
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| 摘 要： | 对介孔炭CMK-3进行单质硫改性得到OMC-S，并通过静态吸附实验研究了该材料对水溶液中汞的吸附性能。研究结果表明：单质硫改性可以在介孔炭上负载12.33%的硫，从而使得介孔炭对汞的吸附容量从185 mg/g提高到476 mg/g；OMC-S具有较广的适用pH值范围，在pH 3～11.5范围内其对汞的吸附去除率均达到92%以上；氯离子对OMC-S的吸附性能具有一定的抑制作用，原因在于它能和汞离子络合形成一系列吸附性能较差的Hg-Cl络合物，而腐殖酸在所研究的范围内对OMC-S的吸附性能无明显影响。
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| 关 键 词： | 介孔炭 单质硫 汞吸附 去除率 |
| 修稿时间： | 1/3/2009 12:00:00 AM |
Adsorption of Hg(Ⅱ)from aqueous solutions by elemental sulfur-modified ordered mesoporous carbon |
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| Yin Jun,Chen Guanghui,Cui Hao,Wang Jing,Tao Xiancong and Zheng Jianzhong.Adsorption of Hg(Ⅱ)from aqueous solutions by elemental sulfur-modified ordered mesoporous carbon[J].Techniques and Equipment for Environmental Pollution Control,2009,3(12):2148-2152. |
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| Authors: | Yin Jun Chen Guanghui Cui Hao Wang Jing Tao Xiancong and Zheng Jianzhong |
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| Institution: | State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093,China,State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093,China,State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093,China,State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093,China,Modern Analysis Center, Nanjing University, Nanjing 210093,China and State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093,China |
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| Abstract: | An elemental sulfur-modified ordered mesoporous carbon (OMC-S) was prepared by impregna-ting elemental sulfur on the surface of CMK-3. Batch tests were performed to study aqueous Hg( Ⅱ ) adsorption properties of OMC-S. Results showed that 12.33% sulfur was impregnated onto CMK-3,and the Q(max)was in-creased from 185 mg/g to 476 mg/g. Hg adsorption removal rate was generally over 92% in the range of pH 3 to 11.5. The existence of Cl~- decreased Hg adsorption because of the formation of Hg-C1 complex which had wea-ker affinity to OMC-S comparing with Hg-OH complex. While the existence of HA did not show obvious impact on the Hg adsorption. |
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| Keywords: | ordered mesoporous carbon elemental sulfur mercury adsorption removal rate |
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