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Assessing Chromium Contamination in Red Soil: Monitoring the Migration of Fractions and the Change of Related Microorganisms

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  • Siyuan Zhang

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Xiaodong Hao

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Jiahui Tang

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Jin Hu

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Yan Deng

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Menglong Xu

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Ping Zhu

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Jiemeng Tao

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Yili Liang

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Huaqun Yin

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Luhua Jiang

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Xueduan Liu

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

  • Hongwei Liu

    (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
    Key Laboratory of Biometallurgy of Ministry of Education, Changsha 410083, China)

Abstract

The improper stacking of chromium (Cr) slag poses a great threat to the environment and human health. The toxicity of Cr in soil is not only related to its total amount, but also to its fractions. A simulated experiment was conducted in laboratory to assess the environmental risk of Cr fractions migration and distribution in red soil. The results showed the content of acid-soluble and reducible Cr significantly decreased ( P < 0.05) in top layer but increased in middle and substratum layers over time. This indicated that acid-soluble and reducible Cr migrated downward with time and the relative mobility of acid-soluble Cr (0.038 mg/kg·d·m) was higher than that of reducible Cr (0.028 mg/kg·d·m). Furthermore, correlation analysis between microbial community and chromium fraction showed the relative abundance of Lysobacter , Flavihumibacter , Flavisolbacter, and Altererythrobacter was significantly ( P < 0.05) correlated with acid-soluble and reducible fractions. Thus, these microorganisms might be evaluators to assess the migration of acid-soluble and reducible fractions in red soil. In summary, this study provided a new comprehension on remediation of Cr-contaminated soil by monitoring the migration of acid-soluble and reducible fractions and the changes of related microbial groups.

Suggested Citation

  • Siyuan Zhang & Xiaodong Hao & Jiahui Tang & Jin Hu & Yan Deng & Menglong Xu & Ping Zhu & Jiemeng Tao & Yili Liang & Huaqun Yin & Luhua Jiang & Xueduan Liu & Hongwei Liu, 2020. "Assessing Chromium Contamination in Red Soil: Monitoring the Migration of Fractions and the Change of Related Microorganisms," IJERPH, MDPI, vol. 17(8), pages 1-15, April.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:8:p:2835-:d:348155
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    References listed on IDEAS

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    1. Weigang Hu & Qi Zhang & Tian Tian & Dingyao Li & Gang Cheng & Jing Mu & Qingbai Wu & Fujun Niu & James C Stegen & Lizhe An & Huyuan Feng, 2015. "Relative Roles of Deterministic and Stochastic Processes in Driving the Vertical Distribution of Bacterial Communities in a Permafrost Core from the Qinghai-Tibet Plateau, China," PLOS ONE, Public Library of Science, vol. 10(12), pages 1-19, December.
    2. Xiangke Kong & Chunhui Li & Ping Wang & Guoxin Huang & Zhitao Li & Zhantao Han, 2019. "Soil Pollution Characteristics and Microbial Responses in a Vertical Profile with Long-Term Tannery Sludge Contamination in Hebei, China," IJERPH, MDPI, vol. 16(4), pages 1-12, February.
    3. Li, Zhong-Wu & Zeng, Guang-Ming & Zhang, Hua & Yang, Bin & Jiao, Sheng, 2007. "The integrated eco-environment assessment of the red soil hilly region based on GIS—A case study in Changsha City, China," Ecological Modelling, Elsevier, vol. 202(3), pages 540-546.
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