Preparation and characterization of biochar from four different solid wastes and its ampicillin adsorption performance

被引:0
作者
Yu, Junxin [1 ]
Gu, Tianyu [1 ]
Wang, Ruiying [1 ]
Li, Bing [1 ]
Dong, Zhiying [1 ]
Zhu, Xiaohui [1 ]
Li, Zhexuan [1 ]
Hu, Tiantian [1 ]
Huang, Ying [1 ]
机构
[1] Ningbo Univ, Sch Civil & Environm Engn & Geog Sci, Ningbo 315000, Zhejiang, Peoples R China
关键词
Adsorption; Ampicillin; Biochar; Solid waste; Mechanism; ACTIVATED CARBON; REMOVAL; WATER; TETRACYCLINE; COMPOSITE; MECHANISM; BEHAVIOR; SORPTION; RELEASE;
D O I
10.1007/s10653-024-02221-x
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The integration of biochar (BC) production from organic waste with ampicillin (AMP), an emerging pollutant, adsorption is a novel and promising treatment approach. In this study, peanut shells, coffee grounds, digestates, and oyster shells were used for BC production. Among these, the use of anaerobic digestate from food waste fermentation to produce extracts for antibiotic adsorption is relatively unexplored. The pyrolysis temperature was determined using thermogravimetric analysis (TGA) and the materials were characterized with BET, SEM, FTIR, and XRD. The TGA results indicate that PSB, CRB, and DSB underwent pyrolysis involving cellulose, hemicellulose, and lignin, whereas OSB underwent crystal formation. Characterization revealed that DSB has more functional groups, a superior mesoporous structure, appropriate O/C ratio, and trace amounts of calcite crystals, which are favorable for AMP adsorption. Adsorption experiments demonstrate that all four materials adhere to the Freundlich and Langmuir isotherm and Elovich kinetic models, indicating predominant physical adsorption, with some chemical adsorption also present. Thermodynamic studies demonstrate that BC is spontaneous during adsorption and is a heat-absorbing reaction. DSB exhibits the strongest AMP adsorption. A 53.81 mg g-1 adsorbance was obtained at a dosage of 150 mg, pH = 2, and 60 degrees C. This study introduces innovative approaches for managing waste types and provides data to support the selection of suitable solid wastes for the preparation of BC with excellent adsorption properties. Furthermore, it lays the groundwork for future studies aimed at enhancing the AMP treatment efficacy.Graphical Abstract Preparation and characterization of biochar and adsorption mechanism of ampicillin in water.
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页数:21
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