One-pot preparation of layered double oxides-engineered biochar for the sustained removal of tetracycline in water

文献类型： 外文期刊

第一作者： Tang, Jiayi

作者： Tang, Jiayi;Ma, Yongfei;Deng, Zhikang;Zhang, Zulin;Li, Ping;Qi, Xuebin;Zhang, Zulin

作者机构：

关键词： Biochar; Modification; Tetracycline; Adsorption mechanism

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）

ISSN： 0960-8524

年卷期： 2023 年 381 卷

页码：

收录情况： SCI

摘要： Tetracycline (TC) and sugarcane bagasse had both exerted enormous strain on environmental security. In this work, new composite adsorbent designed by impregnating bio-waste bagasse with magnesium-aluminum layered double oxides (BC-MA) was innovatively brought forward for TC removal. Benefiting from the abundant adsorption sites supplied by developed pores structure (0.308 cm(3).g(-1)), enlarged surface area (256.8 m(2).g(-1)) and reinforced functional groups, the maximum adsorption amount of BC-MA for TC reached 250.6 mg g(-1). Moreover, BC-MA displayed desirable adsorption capacity in diverse water environments coupled with excellent sustainable regeneration ability. The absorption process of TC by BC-MA was spontaneous and endothermic, and the pivotal rate-limiting stage pertained to intraparticle diffusion. The mechanisms proposed here mainly concerned pi-pi interactions, pore filling, complexation and hydrogen bonding. These findings suggested that the synthesis of modified biochar from bagasse would offer new opportunities for simultaneous waste resource reuse and water pollution control.

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