煤基活性炭的氧化改性及其对Cd<sup>2+</sup>的吸附性能

王娅娅; 唐亚昆; 高莎莎; 周蓉; 刘浪

doi:10.13568/j.cnki.651094.2016.02.002

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煤基活性炭的氧化改性及其对Cd²⁺的吸附性能

更新时间：2026-01-21

- 煤基活性炭的氧化改性及其对Cd²⁺的吸附性能
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 33, Issue 2, Pages: 134-140(2016)
- 作者机构：
  
  1. 新疆大学化学化工学院
  2. 能源材料化学教育部重点实验室
  3. 新疆大学学报编辑部
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.2016.02.002
  CLC： TQ424.1;X703
- Published：2016
- 稿件说明：
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[1]王娅娅,唐亚昆,高莎莎,等.煤基活性炭的氧化改性及其对Cd~(2+)的吸附性能[J].新疆大学学报(自然科学版),2016,33(02):134-140.
[1]王娅娅,唐亚昆,高莎莎,等.煤基活性炭的氧化改性及其对Cd~(2+)的吸附性能[J].新疆大学学报(自然科学版),2016,33(02):134-140. DOI： 10.13568/j.cnki.651094.2016.02.002.

DOI：10.13568/j.cnki.651094.2016.02.002.

摘要

本文以新疆库车煤为原料

采用KOH活化法

在低碱碳比(1:2)条件下制备了比表面积超过1000m2/g的煤基活性炭.并用不同浓度的硝酸对活性炭进行表面氧化改性

比较了不同氧化程度的活性炭对Cd吸附性能的影响

同时考察了溶液初始浓度、溶液pH值和吸附时间对吸附性能的影响.研究结果表明:采用浓硝酸溶液处理的活性炭具有丰富的含氧官能团、吸附位点多、孔径大

为金属离子的吸附提供了有利条件.由于含氧官能团与金属离子的螯合作用

此氧化改性煤基活性炭对Cd2+的吸附量最大可达到88 mg/g

是未改性前活性炭吸附量的16倍

此材料具有一定的工业应用前景.

Abstract

In this study

coal from Xinjiang kuche was used as raw materials.Coal-based activated carbons with the high surface area(1 000m2/g) were prepared through the chemical activation of KOH in a low proportion of alkali/carbon(1:2).Activated carbons were treated with different concentration of HNO3

leading to abundant oxidation functional groups and special pore structure

rich active sites on the surface of modified activated carbons.The effect of different parameters such as contact time

initial concentrations

solution pH value on the adsorption of Cd2+ was studied in batch experiments.Owing to functional group interact with metal ions

maximum adsorption capacity of Cd2+ on coal-based activated carbons modified with nitric acid reached to 88 mg/g

which was about 16 times than that of the original activated carbon.The results indicated that the modified activated carbon is a high efficient adsorbent for Cd2+

which has a promising prospect for industrial application.

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煤基活性炭的氧化改性及其对Cd2+的吸附性能

DOI：10.13568/j.cnki.651094.2016.02.002

摘要

Abstract

关键词

Keywords

references

煤基活性炭的氧化改性及其对Cd²⁺的吸附性能