高效吸附La(III)和Y(III)的橘皮生物炭的研制

IF 2.8 4区 工程技术 Q2 CHEMISTRY, APPLIED
Li Liu, Bo Feng, Yun Zhang Rao, Chang Shun Tian, Qi Xiong Gu, Tao Huang
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引用次数: 0

摘要

本研究以柑桔皮为原料制备生物炭。研究了限氧碳化温度(200、400和600℃)对柑桔皮生物炭(OPB)在水介质中对La(III)和Y(III)的吸附性能和理化性质的影响。采用SEM、FTIR、XRD对制备的OPB样品进行了表征。实验结果表明,OPB能有效去除水溶液中的La(III)和Y(III)。炭化作用促进了孔隙发育,吸附过程发生迅速。采用Langmuir和拟二级动力学模型分析了La(III)和Y(III)在OPB上的主要化学吸附,确定了静电吸引、交换和羟基、羧基络合在OPB中的作用。在pH为4~6、OPB投加量为1 g/L和2 g/L的条件下,La(III)和Y(III)的Langmuir最大容量分别为55.57 mg/g和31.49 mg/g。通过选择合适的炭化温度,可以获得高效、高吸附性能的橙皮生物炭。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption
In this work, orange peel (OP) was used as raw material to produce biochar. The effect of oxygen-limited carbonization temperature (200, 400, and 600°C) on the physicochemical properties and adsorption behavior of orange peel biochar (OPB) toward La(III) and Y(III) in aqueous media was studied. The prepared OPB samples were characterized by SEM, FTIR, and XRD. The experimental results exhibited effective removal of La(III) and Y(III) from aqueous solution by OPB. The carbonization promoted the pore development, and the adsorption process occurred rapidly. The main chemisorption of La(III) and Y(III) on OPB was analyzed by the Langmuir and pseudo-second-order kinetic model, and the participations of electrostatic attraction, exchange, and hydroxyl and carboxyl complexation in OPB were confirmed. The Langmuir maximum capacity of 55.57 mg/g and 31.49 mg/g was obtained at the optimum pH range of 4~6 and the OPB dosage of 1 g/L and 2 g/L for La(III) and Y(III). The efficient orange peel biochar with high adsorption performance can be obtained by considering suitable carbonization temperature.
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来源期刊
Adsorption Science & Technology
Adsorption Science & Technology 工程技术-工程:化工
CiteScore
5.00
自引率
10.30%
发文量
181
审稿时长
4.5 months
期刊介绍: Adsorption Science & Technology is a peer-reviewed, open access journal devoted to studies of adsorption and desorption phenomena, which publishes original research papers and critical review articles, with occasional special issues relating to particular topics and symposia.
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