高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (4): 20210824.doi: 10.7503/cjcu20210824

• 无机化学 • 上一篇    下一篇

香蒲基生物炭的活化及对VOCs吸附的应用

王红宁1, 黄丽1, 清江3, 马腾洲3, 蒋伟3, 黄维秋2, 陈若愚1   

  1. 1.常州大学精细石油化工江苏省重点实验室, 常州 213164
    2.常州大学江苏省油气储运技术重点实验室, 常州 213016
    3.上海海关工业品与原材料检测技术中心, 上海 200135
  • 收稿日期:2021-12-07 出版日期:2022-04-10 发布日期:2022-03-04
  • 通讯作者: 陈若愚,黄维秋,蒋伟 E-mail:chry@cczu.edu.cn;hwq213@cczu.edu.cn;willjiang@263.com
  • 基金资助:
    国家重点研发计划项目(2019YFC0810905);国家自然科学基金(52174058);海关总署课题(200HK251)

Activation of Biochar from Cattail and the VOCs Adsorption Application

WANG Hongning1, HUANG Li1, QING Jiang3, MA Tengzhou3, JIANG Wei3, HUANG Weiqiu2, CHEN Ruoyu1   

  1. 1.Jiangsu Province Key Laboratory of Fine Petrochemical Engineering,Changzhou University,Changzhou 213164,China
    2.Jiangsu Key Laboratory of Oil and Gas Storage and Transport Technology,Changzhou University,Changzhou 213016,China
    3.Technical Center for Industrial Product and Raw Material Inspection and Testing,Shanghai Customs,Shanghai 200135,China
  • Received:2021-12-07 Online:2022-04-10 Published:2022-03-04
  • Contact: CHEN Ruoyu, HUANG Weiqiu, JIANG Wei E-mail:chry@cczu.edu.cn;hwq213@cczu.edu.cn;willjiang@263.com
  • Supported by:
    the National Key Research and Development Program of China(2019YFC0810905);the National Natural Science Foundations of China(52174058);the Programme of General Administration of Customs, China(200HK251)

摘要:

以香蒲为原料制备生物炭(Biochar), 并用不同试剂进行活化. 活化前的Biochar比表面积和孔体积很小, 分别为1.71 m2/g和0.00421 cm3/g, 而活化后的Biochar比表面积和孔容均增大, 其中经碳酸钠(Na2CO3)活化后的Biochar比表面积和孔容最大. 研究了Na2CO3与Biochar的质量比对其活化的影响, 确定了Na2CO3/Biochar最佳质量比为3∶1条件下, 得到的样品Biochar-Na2CO3-3具有最优的表面积和孔容, 分别为624 m2/g和0.211 cm3/g, 并具有优异的挥发性有机化合物(VOCs)吸附性能, 其正己烷、 甲苯和92号汽油的静态吸附容量分别为1.03, 0.814和0.751 g/g, 正己烷和甲苯的动态吸附容量分别为1.00和0.796 g/g, 且吸附稳定性相对较高, 优于商业用活性炭(AC)和硅胶(SG).

关键词: 生物炭, 活化, 挥发性有机化合物, 吸附-脱吸, 稳定性

Abstract:

Biochar was achieved by using cattail as raw material and activated with different agents. The specific surface area and pore volume of biochar before activation was very small, 1.71 m2/g and 0.00421 cm3/g, respectively, and they were greatly increased after activation. The biochar activated by Na2CO3 has the best surface area and pore volume. At the same time, the effects of different mass ratios of Na2CO3 and Biochar on the activation of Biochar were studied, and the optimal mass ratio of activation was determined. When mass ratio of Na2CO3/Biochar is 3∶1, the synthesized dample(Biochar-Na2CO3-3) has the biggest specific surface area and pore volume(624 m2/g and 0.211 cm3/g), which has excellent adsorption performance of volatile organic compounds(VOCs). The static n-hexane, toluene and No.92 gasoline adsorption capacities of Biochar-Na2CO3-3 are 1.03, 0.814 and 0.751 g/g, respectively. The dynamic n-hexane and toluene adsorption capacities of Biochar-Na2CO3-3 are 1.00 and 0.796 g/g, respectively. The adsorption performance is stable, which is better than the commercial activated carbon(AC) and silica gel(SG).

Key words: Biochar, Activation, Volatile organic compoundes(VOCs), Adsorption-desorption, Stability

中图分类号: 

TrendMD: