Cited by 72Pesticide and Herbicide Environmental StudiesHeavy metals in environmentSoil Carbon and Nitrogen Dynamics

Biochars reduced the bioaccessibility and (bio)uptake of organochlorine pesticides and changed the microbial community dynamics in agricultural soils

Ali, Neelum, Khan, Sardar, Yao, Huaiying, Wang, Juan·2019·Chemosphere

Abstract

Biochar is considered as a universal sorbent used for soil amendment but its impacts on organochlorine pesticides (OCPs) and microbial communities associated with soil and vegetables are unclear. The effects of different biochars (derived from sewage sludge biochar (SSBC), soybean straw biochar (SBBC), rice straw biochar (RSBC) and peanut shells biochar (PNBC)), on bioaccessible fractions of OCPs in a contaminated soil and their subsequent bioaccumulation into vegetables (Chinese cabbage and spring onion) were investigated in this research work. The influence of these amendments on vegetable yields and soil microbial community using Illumina next generation sequencing technology was also assessed. The application of selected biochars significantly (p < 0.01) reduced the bioaccessibility of ∑OCPs in contaminated soil: SSBC (52%), PNBC (51%), RSBC (60%), and SBBC (47%), as compared to the control. The results indicated that following biochar additions, the bio-uptake of ∑OCP bio-uptake was considerably (from 86 to 85%) reduced in grown vegetables. Risk assessment showed that biochar amendments markedly (p < 0.01) decreased the hazard quotient (HQ) indices and incremental lifetime cancer risk (ILTR) values for OCPs associated with the consumption of vegetables. In addition, the results of high-throughput sequencing showed significant differences in microbial community structure between the treatments, which was driven by differences in the relative abundances of soil microbes. The relative abundances of Acidobacteria, Chloroflexi, Nitrospirae and Verrucomicrobia decreased following biochar additions. However, biochar amendments increased the relative abundances of Actinobacteria, Proteobacteria, Planctomycetes, Bacteroidetes, Firmicutes, and Gemmatimonadetes, though the increase in relative abundances of these phyla was strongly dependent on the type of biochar used.

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Crossref · 10.1016/j.chemosphere.2019.02.163

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  • Ali et al. (2019) selected biochar could effectively reduce bio-accessibility of organochlorine pesticides (47-60%) and concentration of OCPs in grown vegetables decreased significantly (85-86%).

    “The results indicated that selected BC could effectively reduce the bio-accessibility of OCPs (47-60%) and the concentration of OCPs in grown vegetables was decreased significantly (85-86%).”
  • Introduction of biochar changed microbial community structure; relative abundances of Acidobacteria, Chloroflexi, Nitrospirae and Verrucomicrobia decreased, while Actinobacteria, Proteobacteria, Planctomycetes, Bacteroidetes, Firmicutes, and Gemmatimonadetes increased, dependent on type and dosage of biochar.

    “The introduction of BC changed the microbial community structure, the relative abundances of Acidobacteria , Chloroflexi , Nitrospirae and Verrucomicrobia decreased following biochar additions, while Actinobacteria , Proteobacteria , Planctomycetes , Bacteroidetes , Firmicutes , and Gemmatimonadetes increased, which were dependent on the type and dosage of BC used.”

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Authors
Ali, N., Khan, S., Yao, H., & Wang, J.
Affiliations
Chinese Academy of Sciences (CN)
Corresponding author
  • Khan, Sardar
  • Yao, Huaiying
Venue
Chemosphere
Publisher
Elsevier BV
Published
2019-06
Volume
224
Pages
805-815
ISSN
0045-6535 (ISSN-L)
OpenAlex
W2915211382
Cited by
72
References
72
Citations by year
2026: 2 · 2025: 11 · 2024: 13 · 2023: 12 · 2022: 11 · 2021: 13 · 2020: 7 · 2019: 3
FWCI
2.55
Type
journal article
Language
en
Open access
closed
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Chinese Academy of Sciences
  • Strategic Priority Research Program (XDB15020301)
Topics
  • Physical Sciences › Environmental Science › Pollution › Pesticide and Herbicide Environmental Studies
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
Keywords
biochar, organochlorine pesticides, bioaccessibility, bioaccumulation, soil microbial communities, soil remediation, vegetable uptake, Chinese cabbage, spring onion, hazard quotient, incremental lifetime cancer risk, sewage sludge biochar, rice straw biochar, peanut shell biochar, soil amendment
MeSH terms
Agriculture, Bacteria, Charcoal, Environmental Pollution, Hydrocarbons, Chlorinated, Arachis, Pesticides, Oryza, Sewage, Soil, Soil Microbiology, Soil Pollutants, Vegetables, Microbiota

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