Volume 7 Issue 2
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Article Navigation >  Journal of Environmental Engineering Technology  > 2017  >  7(2): 168-174
MA Yuxia, TAN Leilei, SHEN Zhiqiang, ZHOU Yuexi, CHEN Xuemin, FU Xiaoyong, TANG Hanying. Study on denitrification performance using calcium hydroxide pretreated straw as solid carbon source[J]. Journal of Environmental Engineering Technology, 2017, 7(2): 168-174. doi: 10.3969/j.issn.1674-991X.2017.02.025
Citation: MA Yuxia, TAN Leilei, SHEN Zhiqiang, ZHOU Yuexi, CHEN Xuemin, FU Xiaoyong, TANG Hanying. Study on denitrification performance using calcium hydroxide pretreated straw as solid carbon source[J]. Journal of Environmental Engineering Technology, 2017, 7(2): 168-174. doi: 10.3969/j.issn.1674-991X.2017.02.025
shu

Study on denitrification performance using calcium hydroxide pretreated straw as solid carbon source

doi: 10.3969/j.issn.1674-991X.2017.02.025
  • 1.

    Manchuria Environment Monitoring Station, Manzhouli 021400, China

  • 2.

    Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

  • 3.

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

  • 4.

    Institute of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

  • 5.

    Mongolia Environment Monitoring Station, Hohhot 010011, China

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  • Corresponding author: Yuexi ZHOU E-mail: zhouyuexi@263.net
  • Received Date: 2016-08-31
  • Publish Date: 2017-03-20
    Abstract
  • Four typical agricultural straws (rice straw, wheat straw, corn straw and sorghum straw) were pretreated by calcium hydroxide, and the effects of pretreated time and solid-to-liquid ratio on enzymatic hydrolysis of straws studied. The denitrification performance was investigated in pretreated straws supported denitrification systems. The results indicated that the higher sugar production was received of calcium hydroxide pretreated straws comparing with raw straws and water pretreated straws. For pretreatment of straws by calcium hydroxide, the optimal pretreatment time was 3 d, and the best solid-to-liquid ratio was 1∶30. The denitrification rates of pretreated rice straw, wheat straw, corn straw and sorghum straw were 0.074, 0.056, 0.055 and 0.077 mg/(g·h), which account for 211%, 215%, 239% and 197% of the raw straws, respectively.

     

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