A Novel N Self-Doped Porous Biochar Synthesized by KHCO3-Activated Chicken Feather for the Remediation of Tetracycline-Contaminated Water and Soil

N self-doped porous biochars (KBCs) were synthesized through high-temperature carbonization and KHCO 3 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...

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Veröffentlicht in:Water, air, and soil pollution air, and soil pollution, 2024-02, Vol.235 (2), p.133, Article 133
Hauptverfasser: Deng, Yu, Chen, Jingfan, Xiao, Zhidan, Liu, Jiaying, Zhang, Jie, Zhu, Bingqi, You, Xiaotong, Ni, Fuquan, Ao, Tianqi, Tan, Yanping
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Sprache:eng
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Zusammenfassung:N self-doped porous biochars (KBCs) were synthesized through high-temperature carbonization and KHCO 3 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 KBC 800-2 exhibited outstanding specific surface area (1648.89 m 2 g −1 ) and pore volume (0.806 cm 3  g −1 ). The maximum adsorption capacity of KBC 800-2 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 KBC 800-2 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 TKBC 800-2 (soil, 50 mg kg −1 TC, and 2% KBC 800-2 ) were increased by 108.57%, 4.98%, 886.08%, 89.52%, and 78.08% respectively. KBC 800-2 as a low-cost and highly effective adsorbent for antibiotic pollution has enormous application potential. Graphical Abstract
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-024-06933-9