SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (12): 2592-2600.DOI: 10.1016/j.cjche.2018.01.028

• Biotechnology and Bioengineering • Previous Articles     Next Articles

Biochar-mediated regulation of greenhouse gas emission and toxicity reduction in bioremediation of organophosphorus pesticide-contaminated soils

Meinan Zhen1, Benru Song1, Xiaomei Liu1, Radhika Chandankere2, Jingchun Tang1   

  1. 1 Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;
    2 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada
  • Received:2017-11-25 Revised:2018-01-04 Online:2019-01-09 Published:2018-12-28
  • Contact: Jingchun Tang
  • Supported by:

    Supported by the National Natural Science Foundation of China (41473070, 31270544); Engineering Research Center Program of Tianjin (17PTGCCX00240) and the National Water Pollution Control and Treatment Science and Technology Major Project (2015ZX07203-011-06).

Biochar-mediated regulation of greenhouse gas emission and toxicity reduction in bioremediation of organophosphorus pesticide-contaminated soils

Meinan Zhen1, Benru Song1, Xiaomei Liu1, Radhika Chandankere2, Jingchun Tang1   

  1. 1 Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;
    2 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada
  • 通讯作者: Jingchun Tang
  • 基金资助:

    Supported by the National Natural Science Foundation of China (41473070, 31270544); Engineering Research Center Program of Tianjin (17PTGCCX00240) and the National Water Pollution Control and Treatment Science and Technology Major Project (2015ZX07203-011-06).

Abstract: Organophosphorus pesticides (OPPs) are a set of toxic persistent organic pollutants (POPs) present in the environment. Recently, biochar-mediated bioremediation has exhibited many advantages over conventional methods for the remediation of pesticide-contaminated soil. In the present study, biochar and nitrogen fertilizer (NH4NO3) were employed to remediate OPP-contaminated soil and the greenhouse gas (GHG) emission during 90 days of incubation was investigated. After thermal desorption treatment, the content of organophosphorus pesticides reduced from 175.61 μg·kg-1 to 62.68 μg·kg-1. The addition of NH4NO3 in the following bioremediation led to larger reduction (34.35%) of the pesticide concentration than that of biochar (31.90%) for the contaminated soils with thermal desorption treatment, while the simultaneous addition of biochar and NH4NO3 led to the largest reduction of pesticide concentration (11.07%) for the soil without thermal desorption treatment. The addition of biochar and NH4NO3 only slightly increased the emission rate of GHGs from the soil without thermal treatment, but remarkably increased the emission rate of GHGs from the soil after thermal treatment. In most cases, the addition of NH4NO3 is more effective than biochar to promote the degradation of pesticide, but also exhibited higher GHG emission. The microbial community analysis suggests that the enhanced degradation of pesticide is mainly owing to the increased activity of microorganism.

Key words: Organophosphorus pesticides, Biochar, NH3NO4, Remediation, Greenhouse gas, Microbial community

摘要: Organophosphorus pesticides (OPPs) are a set of toxic persistent organic pollutants (POPs) present in the environment. Recently, biochar-mediated bioremediation has exhibited many advantages over conventional methods for the remediation of pesticide-contaminated soil. In the present study, biochar and nitrogen fertilizer (NH4NO3) were employed to remediate OPP-contaminated soil and the greenhouse gas (GHG) emission during 90 days of incubation was investigated. After thermal desorption treatment, the content of organophosphorus pesticides reduced from 175.61 μg·kg-1 to 62.68 μg·kg-1. The addition of NH4NO3 in the following bioremediation led to larger reduction (34.35%) of the pesticide concentration than that of biochar (31.90%) for the contaminated soils with thermal desorption treatment, while the simultaneous addition of biochar and NH4NO3 led to the largest reduction of pesticide concentration (11.07%) for the soil without thermal desorption treatment. The addition of biochar and NH4NO3 only slightly increased the emission rate of GHGs from the soil without thermal treatment, but remarkably increased the emission rate of GHGs from the soil after thermal treatment. In most cases, the addition of NH4NO3 is more effective than biochar to promote the degradation of pesticide, but also exhibited higher GHG emission. The microbial community analysis suggests that the enhanced degradation of pesticide is mainly owing to the increased activity of microorganism.

关键词: Organophosphorus pesticides, Biochar, NH3NO4, Remediation, Greenhouse gas, Microbial community