Volume 10 Issue 1
Jan.  2020
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Article Navigation >  Journal of Environmental Engineering Technology  > 2020  >  10(1): 47-55
YUAN Dandan, CHEN Mian, LIU Junxiang, GAO Liang, LIU Fei, ZHANG Xiaoyuan, HAO Ronghua, CHEN Lei, ZHANG Yanyan. The suppression effect and safety evaluation of poly-γ-glutamic acid, a novel biological dust suppressant[J]. Journal of Environmental Engineering Technology, 2020, 10(1): 47-55. doi: 10.12153/j.issn.1674-991X.20190084
Citation: YUAN Dandan, CHEN Mian, LIU Junxiang, GAO Liang, LIU Fei, ZHANG Xiaoyuan, HAO Ronghua, CHEN Lei, ZHANG Yanyan. The suppression effect and safety evaluation of poly-γ-glutamic acid, a novel biological dust suppressant[J]. Journal of Environmental Engineering Technology, 2020, 10(1): 47-55. doi: 10.12153/j.issn.1674-991X.20190084
shu

The suppression effect and safety evaluation of poly-γ-glutamic acid, a novel biological dust suppressant

doi: 10.12153/j.issn.1674-991X.20190084
  • 1.

    Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Shandong Academy of Pharmaceutical Sciences

  • 2.

    Shandong Freda Pharmaceutical Group Co.,Ltd.

  • 3.

    Jinan Yuxuan Environmental Protection Technology Co.,Ltd.

  • 4.

    Shandong Commercial Group Co.,Ltd.

More Information
  • Corresponding author: Fei LIU E-mail: lfshwu@163.com
  • Received Date: 2019-05-13
  • Publish Date: 2020-01-20
    Abstract
  • The dust suppression effect of poly-γ-glutamic acid (γ-PGA) was studied and its safety was evaluated. The dust suppression effects of γ-PGA at different molecular weight, concentration and coordinated-effects with various polysaccharides were investigated respectively by filter paper loading dust and periodic simulation of wind erosion. The effect of γ-PGA on dust removal was tested by smog simulating dust. The effects of γ-PGA on seed germination of Poa pratensis L. and corrosion of carbon steel were investigated separately. The results showed that the dust suppression rate of high molecular weight γ-PGA was higher and only decreased by 10.6% within 12 days. The dust suppression rate of 0.100%γ-PGA was higher than other groups at 1st, 3rd, 7nd and 12th day. When γ-PGA was mixed with hyaluronic acid or xanthan gum in a ratio of 2:1, the dust suppression rates were higher than γ-PGA was used alone. After spraying 0.100% γ-PGA, the sedimentation rate of particles was significantly faster than that of natural sedimentation rate, especially for particles with small particle size. γ-PGA could promote growth of seed. The corrosion rate of carbon steel treated with high concentration γ-PGA was the lowest.

     

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