稻壳基活性炭的制备及其对亚甲基蓝吸附的研究

廖钦洪; 刘庆业; 蒙冕武; 赵永明; 计晓梅; 康彩艳; 黄思玉

环境工程学报

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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.

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.

Liao Qinhong, Liu Qingye, Meng Mianwu, Zhao Yongming, Ji Xiaomei, Kang Caiyan, Huang Siyu. Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue[J]. Chinese Journal of Environmental Engineering, 2011, 5(11): 2447-2452.

Citation:

Liao Qinhong, Liu Qingye, Meng Mianwu, Zhao Yongming, Ji Xiaomei, Kang Caiyan, Huang Siyu. Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue[J]. Chinese Journal of Environmental Engineering, 2011, 5(11): 2447-2452.

稻壳基活性炭的制备及其对亚甲基蓝吸附的研究

1.
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
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）
中图分类号: X703

Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue

1.
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，Guan
Fund Project:

摘要: 以稻壳为原料，采用K2CO3活化法和H3PO4活化法制备了比表面积为1 312 m2/g和682 m2/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
- 活性炭 /
- 亚甲基蓝 /
- 比表面积 /
- 吸附等温线 /
- 热力学参数
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 blue decreases with increasing initial concentration of methylene blue. Meanwhile，the removal rate increases with increasing adsorption time. The best adsorption effect can be obtained at pH 6. Adsorption isotherm of methylene blue is best fitted with Langmuir model，and its Qm value can reach up to 476.2 mg/g. Thermodynamic parameters such as ΔG0，ΔH0 and ΔS0 are negative，which show that the adsorption of methylene blue by rice husk-based activated carbon is a spontaneous and exothermic reaction.
- formaldehyde /
- degradation strain /
- screening /
- degradation characteristics /

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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.

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.

Citation:

Liao Qinhong, Liu Qingye, Meng Mianwu, Zhao Yongming, Ji Xiaomei, Kang Caiyan, Huang Siyu. Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue[J]. Chinese Journal of Environmental Engineering, 2011, 5(11): 2447-2452.

稻壳基活性炭的制备及其对亚甲基蓝吸附的研究

1. 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

收稿日期: 2010-08-28

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）

关键词:

摘要: 以稻壳为原料，采用K2CO3活化法和H3PO4活化法制备了比表面积为1 312 m2/g和682 m2/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

English Abstract

Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue

1. 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，Guan

Received Date: 2010-08-28

Fund Project:

Keywords:

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 blue decreases with increasing initial concentration of methylene blue. Meanwhile，the removal rate increases with increasing adsorption time. The best adsorption effect can be obtained at pH 6. Adsorption isotherm of methylene blue is best fitted with Langmuir model，and its Qm value can reach up to 476.2 mg/g. Thermodynamic parameters such as ΔG0，ΔH0 and ΔS0 are negative，which show that the adsorption of methylene blue by rice husk-based activated carbon is a spontaneous and exothermic reaction.

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稻壳基活性炭的制备及其对亚甲基蓝吸附的研究

Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue

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稻壳基活性炭的制备及其对亚甲基蓝吸附的研究

English Abstract

Study on preparation of rice husk-based activated carbon and its adsorption of methylene blue

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