Abstract
N self-doped porous biochars (KBCs) were synthesized through high-temperature carbonization and KHCO3 activation using chicken feathers as biomass. Subsequently, it was employed for the remediation of tetracycline hydrochloride (TC)-contaminated water and soil. The properties of KBCs were analyzed by various characterization techniques. The results verified that KBC800-2 exhibited outstanding specific surface area (1648.89 m2 g−1) and pore volume (0.806 cm3 g−1). The maximum adsorption capacity of KBC800-2 for TC was 147.8 mg g−1, which was superior to that of raw biochar (15.5 mg g−1). The results of pseudo-second-order and Freundlich indicated that the process was dominated by chemisorption. Moreover, the adsorption capacity of KBC800-2 was stable over a wide pH range of 3–12 and high coexisting ionic strength. The consequences proved that the enhancement of pore filling effect and π-π electron interactions between TC and N self-doped adsorbent were the predominant driving forces to improve the adsorption efficiency of TC. Notably, compared to T50 (soil and 50 mg kg−1 TC), the properties of organic carbon, total nitrogen, and sucrase, urease, and catalase activities in TKBC800-2 (soil, 50 mg kg−1 TC, and 2% KBC800-2) were increased by 108.57%, 4.98%, 886.08%, 89.52%, and 78.08% respectively. KBC800-2 as a low-cost and highly effective adsorbent for antibiotic pollution has enormous application potential.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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This work was supported by the Regional Innovation Cooperation Program of Sichuan Province (No. 2020YFQ0013).
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Yu Deng: conceptualization, resources, writing—review and editing, funding acquisition. Jingfan Chen: methodology, formal analysis, writing—original draft, project administration. Zhidan Xiao: investigation. Jiaying Liu: investigation. Jie Zhang: investigation. Bingqi Zhu: investigation. Xiaotong You: investigation. Fuquan Ni: writing—review and editing. Tianqi Ao: writing—review and editing. Yanping Tan: writing—review and editing.
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Deng, Y., Chen, J., Xiao, Z. et al. A Novel N Self-Doped Porous Biochar Synthesized by KHCO3-Activated Chicken Feather for the Remediation of Tetracycline-Contaminated Water and Soil. Water Air Soil Pollut 235, 133 (2024). https://doi.org/10.1007/s11270-024-06933-9
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DOI: https://doi.org/10.1007/s11270-024-06933-9