数字农科院2.0

Oxygen-Rich Biochar From Torrefaction: A V.ersatile Adsorbent For Water P ollution Control

文献类型： 外文期刊

作者： Li, L; Yang, M; Lu, Q; Zhu, WK; Ma, HQ; Dai, LC

作者机构：

关键词： Torrefaction; Biochar; Adsorption; Uranium; Methylene blue

期刊名称： BIORESOURCE TECHNOLOGY

ISSN： 0960-8524

年卷期： 2019 年 294 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： Compared to pyrochar (PC), little is known about the capability of torrefaction char (TC) in water pollution control. In this study, the physicochemical properties of TC and PC, and their adsorption performances for uranium (U(VI)) and methylene blue (MB) were investigated. Results showed that TC was higher in oxygen content, and richer in oxygen-containing functional groups. The maximum U(VI) and MB adsorption capacities were increased from 56.21 and 192.67 mg/g for PC, respectively, to > 100 and > 350 mg/g for TC, respectively, indicating that TC was much more efficient than PC. Furthermore, torrefaction atmosphere affected the adsorption performance of resulting TC. For example, TC from N-2 was more efficient in MB adsorption, while TC from air was more efficient in U(VI) adsorption. Thus, attributed to the lower processing temperature, simpler preparation route, and higher adsorption capacity, TC could be a competent candidate for water pollution control.

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