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Li Nan, Shan Baoqing, Tang Wenzhong, Wang Yujun. Preparation of powder activated carbon by rice husks and its adsorption capacity to phosphorus[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 1024-1028.
Citation: Li Nan, Shan Baoqing, Tang Wenzhong, Wang Yujun. Preparation of powder activated carbon by rice husks and its adsorption capacity to phosphorus[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 1024-1028.
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Preparation of powder activated carbon by rice husks and its adsorption capacity to phosphorus

  • 1.

    College of Resource and Environment, Shandong Agricultural University, Taian 271018, China

  • 2.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, China

  • 3.

    Key Laboratory of Agricultural Environment in Universities of Shandong, Taian 271018, China

  • Received Date: 19/12/2011
    Accepted Date: 13/11/2011
    Available Online: 18/03/2013
    Fund Project:
  • Powder activated carbon (PAC) with rich microporous structure was prepared from rice husks by carbonizing, activating, pickling, washing and drying, and its specific surface area (BET) was 886.3 m2/g. The adsorption process of PAC to phosphorus (P) was studied. The results showed that the adsorption isotherm could be described by both Langmuir model (R2 = 0.9284) and Freundlich model (R2 = 0.9208), and the saturated adsorption capacity reached 6.93 mg/g. The adsorption process of PAC to P could be described by pseudo second-order kinetic equation (R2 = 0.9968), and the rate of adsorption was under the control of intra-particle diffusion. PAC, as available, cheap and efficient matrix filler, has bright prospects in ecological treatment technologies of rural sewage.
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Preparation of powder activated carbon by rice husks and its adsorption capacity to phosphorus

  • Received Date: 19/12/2011
  • Accepted Date: 13/11/2011
  • Available Online: 18/03/2013
Fund Project:

Abstract: Powder activated carbon (PAC) with rich microporous structure was prepared from rice husks by carbonizing, activating, pickling, washing and drying, and its specific surface area (BET) was 886.3 m2/g. The adsorption process of PAC to phosphorus (P) was studied. The results showed that the adsorption isotherm could be described by both Langmuir model (R2 = 0.9284) and Freundlich model (R2 = 0.9208), and the saturated adsorption capacity reached 6.93 mg/g. The adsorption process of PAC to P could be described by pseudo second-order kinetic equation (R2 = 0.9968), and the rate of adsorption was under the control of intra-particle diffusion. PAC, as available, cheap and efficient matrix filler, has bright prospects in ecological treatment technologies of rural sewage.

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