| 椰壳活性炭对气态氯化汞吸附作用的对比研究 |
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| 引用本文： | 孙康,何跃,卢辛成,蒋剑春,陈水根.椰壳活性炭对气态氯化汞吸附作用的对比研究[J].生物质化学工程,2015,49(4):1-6. |
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| 作者姓名： | 孙康 何跃 卢辛成 蒋剑春 陈水根 |
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| 作者单位： | 1. 中国林业科学研究院 林业新技术研究所, 北京 100091;
2. 环境保护部南京环境科学研究所, 江苏 南京 210042;
3. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业局 林产化学工程 重点开放性实验室; 江苏省 生物质能源与材料重点实验室, 江苏 南京 210042 |
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| 基金项目： | 中国林科院林业新技术所基本科研业务费专项资金(CAFINT2013C02);江苏省自然科学基金(BK2012514);盱眙县政府开放性课题(201412) |
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| 摘 要： | 以氯化汞为目标污染物,研究了椰壳活性炭对气态氯化汞的吸附性能,并结合活性炭微结构表征以及动力学模型拟合研究了其吸附机理。结果表明,椰壳活性炭对气态氯化汞的最大吸附量35.9 mg/g,且活性炭比表面积和总孔容对其吸附氯化汞有显著影响,比表面积大、总孔容大有利于提高饱和吸附量。载气流量不影响活性炭对氯化汞的饱和吸附量,但是影响其吸附时间,增大载气流量能够缩短吸附时间。温度对吸附量和吸附时间均有影响,升高温度能够提高吸附量且缩短吸附时间。通过对吸附过程的动力学模拟,发现活性炭对氯化汞的吸附均符合班厄姆动力学模型,相关系数均大于0.99,活性炭的吸附速率与吸附量随比表面积与总孔容的增大而增大。
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| 关 键 词： | 活性炭 比表面性质 氯化汞吸附 吸附动力学 |
| 收稿时间： | 2015-04-01 |
Characterization for Adsorption of Vapor-phase HgCl2 on Coconut Shell Activated Carbon |
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| SUN Kang,He Yue,LU Xin-cheng,JIANG Jian-chun,CHEN Shui-gen.Characterization for Adsorption of Vapor-phase HgCl2 on Coconut Shell Activated Carbon[J].Biomass Chemical Engineering,2015,49(4):1-6. |
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| Authors: | SUN Kang He Yue LU Xin-cheng JIANG Jian-chun CHEN Shui-gen |
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| Affiliation: | 1. Research Institute of Forestry New Technology, CAF, Beijing 100091, China;
2. Nanjing Institute of Environmental Science, Ministry of Environmental Protection of China, Nanjing 210042, China;
3. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.of Forest Chemical Engineering, SFA; Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China |
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| Abstract: | With mercury chloride as pollution target,the adsorption properties of activated carbons for vapor-phase HgCl2 were investigated.Combining with structural characterization and dynamic model fitting,the adsorption mechanism was discussed.The results indicated that the adsorption capacity of HgCl2 on coco-nut shell activated carbon was 35.9 mg/g and obviously influenced by surface area and total volume.The gas flow didn't influence the saturated adsorption quantity but the adsorption time is affected.The increase of the gas flow could shorten the adsorption time.The temperature affected the adsorption capacity and adsorption time,and raising temperature could increase the adsorption capacity and shorten the adsorption time.From the kinetic study,it was found that the HgCl2 adsorption process of the activated carbon could be described by Bangham model with R2>0.99,and the adsorption rate and capacity increased with the increase of surface area and total volume. |
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| Keywords: | activated carbon surface properties HgCl2 adsorption adsorption kinetic |
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