不同改性活性炭吸附苯酚和亚甲基蓝的实验研究

陆蓉; 田娟; 何莹莹; 赵俊欢; 陈炎彬

doi:10.16803/j.cnki.issn.1004-6216.2015.06.012

环境保护科学

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陆蓉, 田娟, 何莹莹, 赵俊欢, 陈炎彬. 不同改性活性炭吸附苯酚和亚甲基蓝的实验研究[J]. 环境保护科学, 2015, (6): 50-53. doi: 10.16803/j.cnki.issn.1004-6216.2015.06.012

引用本文:

Lu Rong, Tian Juan, He Yingying, Zhao Junhuan, Chen Yanbin. Experimental Study of Absorption of Phenol and Methylene Blue with Different Modified Activated Carbons[J]. Environmental Protection Science, 2015, (6): 50-53. doi: 10.16803/j.cnki.issn.1004-6216.2015.06.012

Citation:

Lu Rong, Tian Juan, He Yingying, Zhao Junhuan, Chen Yanbin. Experimental Study of Absorption of Phenol and Methylene Blue with Different Modified Activated Carbons[J]. Environmental Protection Science, 2015, (6): 50-53. doi: 10.16803/j.cnki.issn.1004-6216.2015.06.012

不同改性活性炭吸附苯酚和亚甲基蓝的实验研究

江苏师范大学城市与环境学院, 江苏徐州 221116

作者简介: 陆蓉(1994-),女,硕士研究生。研究方向:水环境保护。

基金项目:
国家级大学生实践创新训练计划（201310320040）

国家自然科学青年基金项目（51209109）资助
中图分类号: X701.7

Experimental Study of Absorption of Phenol and Methylene Blue with Different Modified Activated Carbons

School of Urban and Environmental Sciences, Jiangsu Normal University, Xuzhou 221116, China
Fund Project:

摘要: 选用木质、果壳、椰壳和煤质4种不同材质的活性炭,经过HNO3酸化和NaOH碱化,选出对苯酚和亚甲蓝吸附效果最好的活性炭,并进行最佳投加量,最佳pH值和最佳吸附时间的研究。结果表明：碱化木质炭比表面积大、孔隙发达,吸附效果最好。对于初始浓度为1 g/L的苯酚和亚甲基蓝溶液,最佳投加量分别为1.5 g和0.5 g。当pH<10时,碱化木质炭对苯酚有较高的去除率,pH值对亚甲基蓝影响不大,在强酸,中性及碱性溶液中吸附效果更佳。碱化木质炭对苯酚的吸附速度高,在极短时间内去除率高达到88%。当亚甲基蓝的吸附时间在20 min之后,碱化木质炭对亚甲基蓝的吸附趋于平衡,去除率达90%。
- 活性炭 /
- 苯酚 /
- 亚甲基蓝 /
- 碱化改性 /
- 酸化改性
Abstract: In this paper, activated carbons prepared from wood, shell, coconut shell and coal were selected and modified by nitric acid and sodium hydroxide for determination of the one with best removal efficiency of phenol and methylene blue. Simultaneously, study of the optimal dosage, pH value and adsorption time was also conducted. The results showed that the adsorption effect of alkali modified wooden activated carbon was the best with larger specific surface area and developed porosity. The optimal dosages for the phenol and methylene blue solutions with initial concentration of 1g/L were 1.5 g and 0.5 g respectively. When the value of pH was below 10, the alkali modified wooden activated carbon had higher removal rate of phenol, but the pH value had little influence on methylene blue removal. The adsorption effects were better in strong acid, neutral and alkaline solutions. The alkali modified wooden activated carbon had high adsorption rate of phenol, with the removal rate reaching to 88% within a rather short time. After 20 minutes, the adsorption of methylene blue by the alkali modified wooden activated carbon tended to balance with the removal rate of 90%.
- Activated Carbon /
- Phenol /
- Methylene Blue /
- Alkalization Modification /
- Acidification Modification

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Citation:

不同改性活性炭吸附苯酚和亚甲基蓝的实验研究

作者简介: 陆蓉(1994-),女,硕士研究生。研究方向:水环境保护。
江苏师范大学城市与环境学院, 江苏徐州 221116

收稿日期: 2015-06-09

基金项目:

国家级大学生实践创新训练计划（201310320040）

国家自然科学青年基金项目（51209109）资助

关键词:

摘要: 选用木质、果壳、椰壳和煤质4种不同材质的活性炭,经过HNO3酸化和NaOH碱化,选出对苯酚和亚甲蓝吸附效果最好的活性炭,并进行最佳投加量,最佳pH值和最佳吸附时间的研究。结果表明：碱化木质炭比表面积大、孔隙发达,吸附效果最好。对于初始浓度为1 g/L的苯酚和亚甲基蓝溶液,最佳投加量分别为1.5 g和0.5 g。当pH<10时,碱化木质炭对苯酚有较高的去除率,pH值对亚甲基蓝影响不大,在强酸,中性及碱性溶液中吸附效果更佳。碱化木质炭对苯酚的吸附速度高,在极短时间内去除率高达到88%。当亚甲基蓝的吸附时间在20 min之后,碱化木质炭对亚甲基蓝的吸附趋于平衡,去除率达90%。

English Abstract

Experimental Study of Absorption of Phenol and Methylene Blue with Different Modified Activated Carbons

School of Urban and Environmental Sciences, Jiangsu Normal University, Xuzhou 221116, China

Received Date: 2015-06-09

Fund Project:

Keywords:

Abstract: In this paper, activated carbons prepared from wood, shell, coconut shell and coal were selected and modified by nitric acid and sodium hydroxide for determination of the one with best removal efficiency of phenol and methylene blue. Simultaneously, study of the optimal dosage, pH value and adsorption time was also conducted. The results showed that the adsorption effect of alkali modified wooden activated carbon was the best with larger specific surface area and developed porosity. The optimal dosages for the phenol and methylene blue solutions with initial concentration of 1g/L were 1.5 g and 0.5 g respectively. When the value of pH was below 10, the alkali modified wooden activated carbon had higher removal rate of phenol, but the pH value had little influence on methylene blue removal. The adsorption effects were better in strong acid, neutral and alkaline solutions. The alkali modified wooden activated carbon had high adsorption rate of phenol, with the removal rate reaching to 88% within a rather short time. After 20 minutes, the adsorption of methylene blue by the alkali modified wooden activated carbon tended to balance with the removal rate of 90%.