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- W4387569985 abstract "This study explored the influence of pyrolysis temperature on the properties of municipal sludge-based biochar (MSB) and evaluated its impact on humification and oxytetracycline (OTC, a broad-spectrum antibiotic) degradation in pig manure composting. Three types of MSB were produced from sewage sludge pyrolyzed at 300 °C, 500 °C, and 700 °C, respectively. Results indicated that pyrolysis temperature adjusted the formation sequence of functional groups in MSB, and higher pyrolysis temperatures enriched the aromaticity of the biochar and augmented the concentration of humic precursor compounds. The MSB addition to pig manure composting enhanced the peak temperature and prolonged the thermophilic phase. Moreover, the MSB addition significantly increased the HI (humic acid/fulvic acid) values (1.6-2.57) compared with the control (1.28), with a more pronounced effect observed at higher biochar pyrolysis temperatures. Furthermore, MSB reduced the half-life of OTC degradation (1.47-2.44 d) during composting, accelerating its degradation compared with the control (2.66 d). The study demonstrated that MSB provided a substantial amount of humic precursor materials into the composting process while also expediting the degradation of organic matter (OM), thereby enhancing the humification process. Moreover, the extended duration of the thermophilic phase accelerated the degradation of OTC and shortened its half-life. Notably, the MSB at 700 °C had the best performance compared with other MSBs." @default.
- W4387569985 created "2023-10-13" @default.
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- W4387569985 date "2023-10-01" @default.
- W4387569985 modified "2023-10-16" @default.
- W4387569985 title "Effect of municipal sludge-based biochar produced at different pyrolysis temperatures on humification and oxytetracycline degradation of pig manure composting" @default.
- W4387569985 doi "https://doi.org/10.1016/j.scitotenv.2023.167816" @default.
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