Characterization of Montmorillonite-Biochar Composite and Its Application in the Removal of Atrazine in Aqueous Solution and Soil

文献类型： 外文期刊

第一作者： Wang, Pingping

作者： Wang, Pingping;Mao, Liangang;Zhu, Lizhen;Zhang, Lan;Zhang, Yanning;Jiang, Hongyun;Zheng, Yongquan;Liu, Xingang;Stenrod, Marianne;Wang, Liang;Yuan, Shankui

作者机构：

关键词： montmorillonite-biochar composite; atrazine; sorption; degradation; soil

期刊名称：FRONTIERS IN ENVIRONMENTAL SCIENCE （ 影响因子：5.411； 五年影响因子：6.313 ）

ISSN：

年卷期： 2022 年 10 卷

页码：

收录情况： SCI

摘要： Atrazine is a widely used triazine herbicide, which poses a serious threat to human health and aquatic ecosystem. A montmorillonite-biochar composite (MMT/BC) was prepared for atrazine remediation. Biochar samples were characterized by using scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectrometer (XPS). Structural and morphological analysis of raw biochar (BC) and MMT/BC showed that MMT particles have been successfully coated on the surface of biochar. Sorption experiments in aqueous solution indicated that the MMT/BC has higher removal capacity of atrazine compared to BC (about 3.2 times). The sorption of atrazine on the MMT/BC was primarily controlled by both physisorption and chemisorption mechanisms. The amendment of MMT/BC increased the sorption capacity of soils and delayed the degradation of atrazine. Findings from this work indicate that the MMT/BC composite can effectively improve the sorption capacity of atrazine in aquatic environment and farmland soil and reduce the environmental risk.

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