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Co-Application of Sewage Sludge, Chinese Medicinal Herbal Residue and Biochar Attenuated Accumulation and Translocation of Antibiotics in Soils and Crops

Author

Listed:
  • Min Pan

    (Department of Applied Science, School of Science and Technology, Hong Kong Metropolitan University, Hong Kong SAR, China)

  • Shing Him Lee

    (Department of Social Sciences, Education University of Hong Kong, Hong Kong SAR, China)

  • Liwen Luo

    (Institute of Bioresource and Agriculture, Department of Biology, Hong Kong Baptist University, Hong Kong SAR, China)

  • Xun Wen Chen

    (Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China)

  • Yik Tung Sham

    (Department of Construction and Quality Management, School of Science and Technology, Hong Kong Metropolitan University, Hong Kong SAR, China)

Abstract

Sewage sludge (SL), Chinese medicinal herbal residues (CMHRs) and the raw materials of biochar (BC) are normally treated as wastes. However, SL, CMHRs and BC are potential candidates for soil amendments. The performances of soils amended with three different proportions (5%, 10% and 20% on a dry-weight basis) of SL-BC and SL-CMHR-BC in terms of ameliorating soil properties and attenuating antibiotics in soil–plant systems were investigated with two common crop species: carrot and lettuce. The amended soils in general showed higher nutrient levels than the control soils, and particularly for the 20% SL-CMHR-BC. The soils with 10% or 20% SL-BC or SL-CMHR-BC apparently retarded the germination performances of the two crop species, but the negative effects were not noticeable after a growing period. Six target antibiotics, amoxicillin (AMX), tetracycline (TC), sulfamethazine (SMX), norfloxacin (NOR), erythromycin (ERY) and chloramphenicol (CAP), were applied for growing the crops by using irrigation water with 3 μg L −1 (IW3) and 30 μg L −1 (IW30) of each antibiotic. The amended soils led to lower levels of antibiotics in the soils and crop tissues as compared with the control, with the 20% SL-CMHR-BC soils showing the most pronounced effect. The effects of the soil amendments on the bioconcentration factor (BCF) varied, but generally with lower values in the amended soils. Both SL-BC and SL-CMHR-BC were proven in the study as potential soil amendments for alleviating the environmental dispersal and human exposure risks of different antibiotics, and specifically 20% SL-CMHR-BC.

Suggested Citation

  • Min Pan & Shing Him Lee & Liwen Luo & Xun Wen Chen & Yik Tung Sham, 2023. "Co-Application of Sewage Sludge, Chinese Medicinal Herbal Residue and Biochar Attenuated Accumulation and Translocation of Antibiotics in Soils and Crops," Sustainability, MDPI, vol. 15(8), pages 1-14, April.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:8:p:6972-:d:1128939
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    References listed on IDEAS

    as
    1. Nuno Nunes & Carla Ragonezi & Carla S.S. Gouveia & Miguel Â.A. Pinheiro de Carvalho, 2021. "Review of Sewage Sludge as a Soil Amendment in Relation to Current International Guidelines: A Heavy Metal Perspective," Sustainability, MDPI, vol. 13(4), pages 1-20, February.
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