不同部位竹材制备竹活性炭及其对苯酚的吸附性能

doi:10.11707/j.1001-7488.20090418

林业科学 ›› 2009, Vol. 12 ›› Issue (4): 107-111.doi: 10.11707/j.1001-7488.20090418

不同部位竹材制备竹活性炭及其对苯酚的吸附性能

蒋新元¹ 胡迅² 李湘洲¹ 朱媛媛²

（1. 中南林业科技大学材料科学与工程学院长沙410004；2. 中南林业科技大学资源与环境学院长沙410004）

收稿日期:2007-10-30 修回日期:1900-01-01 出版日期:2009-04-25 发布日期:2009-04-25

Preparation of Bamboo Activated Carbon by Different Parts of Bamboo and Their Adsorption on Phenol

Jiang Xinyuan¹,Hu Xun²,Li Xiangzhou¹,Zhu Yuanyuan²

(1. College of Materials Science and Engineering, Central South University of Forestry and Technology Changsha 410004；2.College of Resources and Environment, Central South University of Forestry and Technology Changsha 410004)

Received:2007-10-30 Revised:1900-01-01 Online:2009-04-25 Published:2009-04-25

摘要/Abstract

摘要：

利用不同部位的竹材如竹蔸、竹节和竹枝制备竹炭，以KOH为活化剂，在活化温度为700 ℃和不同质量浓度的KOH溶液下进行活化制备竹活性炭，测定吸附性能最好的竹活性炭在不同吸附时间和溶液质量浓度下对苯酚的吸附情况，并进行结构表征。结果表明： KOH溶液质量浓度为16.0 g·L^-1时，制备的竹活性炭对苯酚的吸附效果最好，而竹蔸、竹节和竹枝活性炭中又以竹蔸活性炭吸附性能最好；吸附时间在40 min时，竹蔸活性炭对苯酚的吸附趋于平衡，在30 ℃时竹蔸活性炭苯酚吸附量达到83.4 mg·g^-1时趋向饱和。竹枝炭、竹节炭与竹篼炭的孔隙度分别为0.656，0.698和0.740，竹枝活性炭、竹节活性炭与竹篼活性炭的孔隙度分别为0.688，0.748和0.790。竹篼炭和竹篼活性炭比表面积分别为110.4和475.7 m²·g^-1，孔容分别为0.09和0.26 mL·g^-1，平均孔径分别为3.16和2.19 nm。

关键词: 竹炭, 竹活性炭, 苯酚, 吸附, 氢氧化钾, 结构表征

Abstract:

Bamboo carbons were prepared by bamboo butt，bamboo burl and bamboo branch，then the bamboo activated carbons were prepared by bamboo carbons at 700 ℃ under different concentration of KOH solution by using KOH as activator，the adsorption of bamboo activated carbon with best adsorption capability to phenol was measured at different time and solution concentration，and the structure of different carbon was also characterized. The results show that the bamboo activated carbon has best adsorption capability to phenol when the concentration of KOH solution is 16.0 g·L^-1，and the bamboo butt activated carbon has best adsorption capability to phenol among the bamboo activated carbons prepared by butt，burl and branch respectively. The adsorption of bamboo butt activated carbon to phenol can reach to equilibrium when the adsorption time is within 40 min，and the adsorption capacity of bamboo butt activated carbon to phenol reaches to 83.4 mg·g^-1 which tend to saturation at 30 ℃. The porosity rate of bamboo butt carbon，bamboo burl carbon and bamboo branch carbon is 0.656，0.698 and 0.740 respectively，and the porosity rate of bamboo butt activated carbon，bamboo burl activated carbon and bamboo branch activated carbon is 0.688，0.748 and 0.790 respectively. The specific surface area of bamboo butt carbon and bamboo butt activated carbon is 110.4 and 475.7 m²·g^-1 respectively，and the pore volume is 0.09 and 0.26 mL·g^-1 respectively，the average pore size is 3.16 and 2.19 nm respectively.

Key words: bamboo carbon, bamboo activated carbon, phenol, adsorption, KOH, structure characterization

蒋新元胡迅李湘洲朱媛媛. 不同部位竹材制备竹活性炭及其对苯酚的吸附性能[J]. 林业科学, 2009, 12(4): 107-111.

Jiang Xinyuan;Hu Xun;Li Xiangzhou;Zhu Yuanyuan. Preparation of Bamboo Activated Carbon by Different Parts of Bamboo and Their Adsorption on Phenol[J]. Scientia Silvae Sinicae, 2009, 12(4): 107-111.

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不同部位竹材制备竹活性炭及其对苯酚的吸附性能

Preparation of Bamboo Activated Carbon by Different Parts of Bamboo and Their Adsorption on Phenol

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