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Founded in 1987， Bimonthly
Supervisor：Jiangxi University Of Science And Technology
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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
CN：36-1311/TF
CODEN YJKYA9
Volume 5 Issue 4
Aug.  2014
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TANG Minkang, CHEN Ping, XU Jianhong, GAO Naiyun, XIAO Aihong. Preparation of Fe(Ⅱ)-H2O2-impregnated granular activated carbon at different temperatures for arsenate removal from water[J]. Nonferrous Metals Science and Engineering, 2014, 5(4): 66-70. DOI: 10.13264/j.cnki.ysjskx.2014.04.013
Citation: TANG Minkang, CHEN Ping, XU Jianhong, GAO Naiyun, XIAO Aihong. Preparation of Fe(Ⅱ)-H2O2-impregnated granular activated carbon at different temperatures for arsenate removal from water[J]. Nonferrous Metals Science and Engineering, 2014, 5(4): 66-70. DOI: 10.13264/j.cnki.ysjskx.2014.04.013
shu

Preparation of Fe(Ⅱ)-H2O2-impregnated granular activated carbon at different temperatures for arsenate removal from water

  • 1.

    Jiangxi University of Science and Technology,Ganzhou 341000,China

  • 2.

    Tongji University, Shanghai 200092,China

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  • Received Date: May 17, 2014
  • Published Date: August 30, 2014
    Graphical Abstract
    • Abstract
  • Granular activated carbon (GAC) modified by Fe(Ⅱ)-H2O2 incipient wetness impregnation at different temperatures are prepared by FeSO4·7H20 and hydrogen peroxide (H2O2) via the incipient wetness for 24 h at 100 ℃ (Fe(Ⅱ)-24 h ) and the high temperature evaporation for 15 min (Fe(Ⅱ)-15 min).Fe(Ⅱ)-24 h and Fe(Ⅱ)-15 min are characterized by SEM and are compared for the adsorption behavior of the arsenate (1.1 mg/L).The SEM has shown that nano-iron hydroxides are formed on the surface of Fe (Ⅱ)(0.485 %)-24 h (0.485 % is the iron content of Fe (Ⅱ)-24 h，the same below) and that sintering distorted hydroxides are formed on the surface of Fe (Ⅱ)(1.35 %)-15 min.The high temperature evaporation for 15 min is favorable for iron to load on GAC.The iron use efficiency of Fe(Ⅱ)-24 h(108-142 mg/gFe) is two fold of that of Fe(Ⅱ)-15 min(57-63 mg/gFe).The arsenate equilibrium adsorption capacity of Fe(Ⅱ) (0.485 %)-24 h is better than the Fe(Ⅱ)(1.35 %)-15 min at pH 2-3.5 or 9-12，at the same time，the soluble iron at any particular pH released from the Fe(Ⅱ)(0.485 %)-24 h is less than that released from the Fe (Ⅱ)(1.35 %)-15 min.The presence of SO42-，NO3-，ClO4-，or PO43- inhibit the adsorption of arsenate， especially for phosphate，while the existence of Cl-(100 mg/L)and BrO3- promote the adsorption of arsenate.
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