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• W4291608067 abstract "The purpose of this work is to study the pyrolysis conditions of target biochar suitable for target heavy metal ion, to characterize the optimized target biochar, and to study the adsorption performance of biochar. With Cu2+ and Zn2+ as the target pollutants, the pyrolysis conditions involved in the preparation process as pyrolysis temperature, pyrolysis time, and heating rate were evaluated and optimized from Box-Behnken Design (BBD), response surface methodology (RSM) and desirability function, the optimized pyrolysis conditions of target biochar for Cu2+ (Cu-BC) and Zn2+ (Zn-BC) were obtained. The optimum pyrolysis parameters for Cu-BC and Zn-BC were pyrolysis time of 3.09 and 2.19 h, pyrolysis temperature of 425.27 and 421.97 °C, and heating rate of 19.65 and 15.88 °C/min. The pseudo-second-order kinetic and Langmuir isotherm model proved to be the best fit for the equilibrium data, with a maximum adsorption capacity (Qmax) fitted by Langmuir model were 210.56 mg/g for Cu2+ by Cu-BC and 223.32 mg/g for Zn2+ by Zn-BC, which were both higher than the Qmax of unoptimized biochar (BC) for Cu2+ (177.66 mg/g) and Zn2+ (146.14 mg/g). The physical properties, chemical structure, surface chemistry properties of Cu-BC and Zn-BC were characterized by Zeta potential meter, Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). This study puts forward a new perspective for optimizing target biochar production for special environmental application." @default.
• W4291608067 created "2022-08-15" @default.
• W4291608067 creator A5030783661 @default.
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• W4291608067 date "2022-08-11" @default.
• W4291608067 modified "2023-10-16" @default.
• W4291608067 title "Optimization of target biochar for the adsorption of target heavy metal ion" @default.
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• W4291608067 doi "https://doi.org/10.1038/s41598-022-17901-w" @default.
• W4291608067 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35953641" @default.
• W4291608067 hasPublicationYear "2022" @default.
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