| 稻壳基活性炭的制备及其对亚甲基蓝吸附的研究 |
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| 引用本文： | 廖钦洪,刘庆业,蒙冕武,赵永明,计晓梅,康彩艳,黄思玉.稻壳基活性炭的制备及其对亚甲基蓝吸附的研究[J].环境工程学报,2011,5(11):2447-2452. |
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| 作者姓名： | 廖钦洪 刘庆业 蒙冕武 赵永明 计晓梅 康彩艳 黄思玉 |
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| 作者单位： | 广西师范大学环境与资源学院、广西环境工程与保护评价重点实验室、珍稀濒危动植物生态与环境保护省部共建教育部重点实验室,桂林,541004 |
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| 基金项目： | 广西自然科学基金资助项目(2011GXNSFA018027)；广西教育厅科研项目（200807LX042）；珍稀濒危动植物生态与环境保护省部共建教育部重点实验室研究基金；广西环境工程与保护评价重点实验室平台建设经费资助） |
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| 摘 要： | 以稻壳为原料，采用K2CO3活化法和H3P04活化法制备了比表面积为1312m^2／g和682m^2／g的活性炭，通过扫描电子显微镜（SEM）、X-射线衍射仪（XRD）对样品进行了表征，并将孔隙发达的活性炭样品用于对亚甲基蓝的吸附，结果表明，K2CO3活化法制备的活性炭样品具有更多的微孔结构；随着亚甲基蓝溶液初始浓度的增加、活性炭吸附时间的延长，亚甲基蓝的去除率呈现逐渐降低和逐渐增大的变化规律，当pH值为6时，活性炭对亚甲基蓝的吸附效果最佳；稻壳基活性炭对亚甲基蓝的吸附等温线符合Langmuir模型，Qm最高可达476．2mg／g；热力学参数△G^0△H^0和△S^0均为负值，表明稻壳基活性炭对亚甲基蓝的吸附是一个自发的放热反应。
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| 关 键 词： | 活性炭 亚甲基蓝 比表面积 吸附等温线 热力学参数 |
| 收稿时间： | 7/1/2010 12:00:00 AM |
Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue |
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| Liao Qinhong,Liu Qingye,Meng Mianwu,Zhao Yongming,Ji Xiaomei,Kang Caiyan and Huang Siyu.Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue[J].Techniques and Equipment for Environmental Pollution Control,2011,5(11):2447-2452. |
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| Authors: | Liao Qinhong Liu Qingye Meng Mianwu Zhao Yongming Ji Xiaomei Kang Caiyan and Huang Siyu |
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| Institution: | Liao Qinhong Liu Qingye Meng Mianwu Zhao Yongming Ji Xiaomei Kang Caiyan Huang Siyu(Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Guangxi Normal University),Ministry of Education,Guangxi Key Laboratory of Environmental Engineering,Protection and Assessment,College of Environment and Resources,Guangxi Normal University,Guilin 541004,China) |
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| Abstract: | Activated carbon was prepared from rice husk by using K2CO3 and H3PO4,and the two types of activated carbon prepared by these two chemicals have specific surface areas of 1 312 m2/g and 682 m2/g respectively.Activated carbon with developed pore structures was used to adsorb methylene blue after being characterized by scanning electron microscope(SEM) and X-ray diffraction(XRD).Results show that the activated carbon prepared by K2CO3 activation has more microporous structures.The removal rate of methylene bl... |
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| Keywords: | activated carbon methylene blue specific surface areas adsorption isotherm thermodynamic parameter |
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