炭化褐煤吸附剂萃取水溶液中的银离子

IF 0.4 Q4 ENGINEERING, CHEMICAL

Coke and Chemistry Pub Date : 2025-02-03 DOI:10.3103/S1068364X24600805

I. Yu. Zykov, N. I. Fedorova

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引用次数: 0

摘要

如果用硝酸对褐煤衍生的多孔碳材料进行改性，对水溶液中银离子的吸附有何影响？为了回答这个问题，我们研究了在800°C和1000°C下盒式焦化生产的碳化褐煤。硝酸氧化改性可以降低褐煤的灰分含量。O/C原子比增大，各种含氧官能团的含量增加。炭化后褐煤的比表面积和总孔隙体积增大。初始样品和改性样品对水溶液中银离子的吸附实验表明，炭化褐煤的氧化并没有提高其吸附性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Extraction of Silver Ions from Aqueous Solution by Sorbents Based on Carbonized Lignite

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Extraction of Silver Ions from Aqueous Solution by Sorbents Based on Carbonized Lignite

If porous carbon materials derived from lignite are modified by means of nitric acid, how does that affect the sorption of silver ions from aqueous solution? To answer that question, we study carbonized lignite produced by box coking at 800 and 1000°C. Oxidative modification by nitric acid is found to reduce the ash content of carbonized lignite. The O/C atomic ratio is increased, and the content of various oxygen-bearing functional groups rises. In addition, the specific surface and the total pore volume of the carbonized lignite increase. Experiments on the sorption of silver ions from aqueous solution by the initial and modified samples show that oxidation of the carbonized lignite does not improve their sorption.

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来源期刊

Coke and Chemistry ENGINEERING, CHEMICAL-

CiteScore

0.70

自引率

50.00%

发文量

期刊介绍： The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.