数字农科院2.0

Biochar derivation at low temperature: A novel strategy for harmful resource usage of antibiotic mycelial dreg

文献类型： 外文期刊

作者： Jing Yan;Xueqi Guo;Qingjie Li;Xufeng Yuan;Zhenghai Zhang;Louis A. Tremblay;Zhaojun Li

作者机构：

关键词： Adsorption;Antibiotic mycelial dreg;Biochar;Hazardous contaminants;Pyrolysis

期刊名称： Environmental Research

ISSN： 0013-9351

年卷期： 2024 年 250 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Antibiotic mycelial dreg (AMD) has been categorized as hazardous waste due to the high residual hazardous contaminants. Inappropriate management and disposal of AMD can cause potential environmental and ecological risks. In this study, the potential of pleuromutilin mycelial dreg (PMD) as a novel feedstock for preparing tetracycline hydrochloride (TC) adsorbent was explored to achieve safe management of PMD. The results suggested that residual hazardous contaminants were completely eliminated after pyrolysis. With the increase of pyrolysis temperature, the yields, H/C, O/C, (O + N)/C, and pore size in PMD-derived biochars (PMD-BCs) decreased, while BET surface area and pore volume increased, resulting in the higher stability of the PMD-BCs prepared from higher temperatures. The TC adsorption of the PMD-BCs increased from 27.3 to 46.9 mg/g with the increase of the pyrolysis temperature. Surprisingly, pH value had a strong impact on the TC adsorption, the adsorption capacity of BC-450 increased from 6.5 to 71.1 mg/g when the solution pH value increased from 2 to 10. Lewis acid-base interaction, pore filling, π-π interaction, hydrophobic interaction, and charge-assisted hydrogen bond (CAHB) are considered to drive the adsorption. This work provides a novel pathway for the concurrent detoxification and reutilization of AMD.

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