Cited by 420Pesticide and Herbicide Environmental StudiesAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterials

Adsorption and catalytic hydrolysis of carbaryl and atrazine on pig manure-derived biochars: Impact of structural properties of biochars

Zhang, Peng, Sun, Hongwen, Yu, Li, Sun, Tieheng·2013·Journal of Hazardous Materials

Abstract

Biochars were produced from pig manure to elucidate the influence of biochars with high ash contents on the fate of pesticides. Adsorption and catalytic hydrolysis of carbaryl and atrazine on original biochars and deashed biochars were investigated. The two pesticides were substantially adsorbed by the biochars, with organic carbon normalized sorption coefficient (K(oc)) values of 10(2.65)-10(3.66) L/kg for carbaryl and 10(1.90)-10(3.57) L/kg for atrazine at C(e) of 0.5 mg/L. Hydrophobic effect alone could not explain the sorption, and several other processes including pore-filling and π-π electron donor-acceptor interactions were involved in pesticide adsorption. Adsorption increased greatly on the deashed biochar, indicating that some organic sorption sites in the original biochars were blocked or difficult to access due to their interactions with inorganic moiety. The pesticides were found to hydrolyze faster in the presence of biochars, and in the presence of biochar pyrolyzed at 700 °C, carbaryl and atrazine were decomposed by 71.8% and 27.9% in 12 h, respectively. The elevated solution pH was the main reason for the enhanced hydrolysis; however both the mineral surface and dissolved metal ions released from the biochars were confirmed to catalyze the hydrolysis.

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Crossref · 10.1016/j.jhazmat.2012.11.046

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  • Sorption of organic contaminants on biochar occurs by pore-filling, diffusion and partitioning, surface hydrophobic and hydrophilic interactions, aromatic and cation-π interactions, electrostatic interactions, and hydrogen bonding, or by a simultaneous occurrence of these mechanisms.

    “occurs by: (a) pore-filling mechanisms (contributed by the majority of the surface area of biochar); (b) diffusion and partitioning mechanisms (effects of electrostatic interactions on the diffusion and equilibrium partitioning); (c) surface hydrophobic and hydrophilic inter-actions”

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Authors
Zhang, P., Sun, H., Yu, L., & Sun, T.
Affiliations
  • Nankai University (CN)
  • Chinese Academy of Sciences (CN)
Corresponding author
Sun, Hongwen
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2013-01
Volume
244-245
Pages
217-224
ISSN
0304-3894 (ISSN-L)
OpenAlex
W2052697842
Cited by
420
References
57
Citations by year
2026: 12 · 2025: 32 · 2024: 30 · 2023: 39 · 2022: 41 · 2021: 51 · 2020: 41 · 2019: 36 · 2018: 36 · 2017: 33 · 2016: 25 · 2015: 25 · 2014: 12 · 2013: 5 · 2012: 2
FWCI
11.62
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
Asia-Pacific Network for Global Change Research
Topics
  • Physical Sciences › Environmental Science › Pollution › Pesticide and Herbicide Environmental Studies
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
biochar, pig manure, carbaryl, atrazine, pesticide adsorption, catalytic hydrolysis, ash content, pore filling, π-π electron donor-acceptor interactions, hydrophobic effect, pyrolysis temperature, metal ions, solution pH, pesticide fate in soil
MeSH terms
Adsorption, Animals, Atrazine, Catalysis, Charcoal, Hot Temperature, Herbicides, Insecticides, Manure, Carbaryl, Soil Pollutants, Swine, Recycling

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