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林产化学与工业

林产化学与工业 ›› 2012, Vol. 32 ›› Issue (3): 33-37.

• 研究报告 • 上一篇    下一篇

改性糠醛渣基活性炭对水中Hg2+吸附性能的研究

项东升1,2, 秦恒飞2, 朱驯1,3, 陈露1, 曾韬2, 周建斌2   

  1. 1. 盐城纺织职业技术学院 化学工程系 江苏 盐城 224005;2. 南京林业大学 化学工程学院 国家林业局 林产化学加工工程重点开放性实验室 江苏 南京 210037;3. 南京理工大学 化工学院 江苏 南京 210094
  • 收稿日期:2011-07-22 修回日期:1900-01-01 出版日期:2012-06-30 发布日期:2012-06-30
  • 通讯作者: 周建斌,教授,博士生导师,从事生物质能源与活性炭材料研究;E-mail:lzhoujianbin@njfu.com.cn.

Adsorption Behavior of Hg2+ in Aqueous Solution Using Modified Activated Carbon from Furfural Residue

XIANG Dong-sheng1,2, QIN Heng-fei2, ZHU Xun1,3, CHEN Lu1, ZENG Tao2, ZHOU Jian-bin2   

  1. 1. Department of Chemistry Engineer, Yancheng Textile Vocational Technology, Yancheng 224005, China;2. College of Chemical Engineering, Nanjing Forestry University;Key and Open Lab. on Forest Chemical Procese, SFA, Nanjing 210037, China;3. School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
  • Received:2011-07-22 Revised:1900-01-01 Online:2012-06-30 Published:2012-06-30

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摘要： 对糠醛渣制得的活性炭,采用S2Cl2回流负载,再微波焙烧的方法进行改性,采用Boehm滴定法和FT-IR分析了活性炭改性前后表面官能团的变化情况;对比了活性炭改性前后孔径分布情况;并探讨了改性活性炭对水体中的Hg2+吸附性能。Boehm滴定分析表明活性炭改性后的总酸度、羧基、内酯基皆有增加; FT-IR谱图上700~500 cm-1 范围内出现了新的吸收峰说明了改性活性炭表面增加了C-S、S-S键,孔径分布分析表明改性后活性炭微孔更加发达。在Hg2+初始质量浓度1~6 mg/L、温度 25℃、pH值6.0~7.0、吸附时间 180 min 的条件下,经S2Cl2改性后活性炭用量为 2.5 g/L 时,对水体中Hg2+去除率达 93% 以上。

关键词: 糠醛渣, 改性活性炭, Hg2+, 吸附

Abstract: Activated carbon prepared from furfural residue. Then the modification was carried out using sulfur dichloride reflux boiling and microwave roasting. The differences of surface functional groups before and after modification were analyzed through Boehm titration, pore size distribution and Fourier transform infrared spectroscopy (FT-IR). The results of Boehm titration showed that total acidity and the number of carboxyl and lactone increased after modification. The new peaks between 700-500 cm-1 in FT-IR spectra indicated that S-S, C-S bonds appeared on the surface of modified activated carbon. Pore size distribution showed that the microporous of activated carbon were developed after modification. This paper also studied the adsorption capacity of Hg2+ ion by modified activated carbon under different conditions such as varied concentrations, adsorption time and pH value. The final results showed that under the condition of Hg2+ 1-6 mg/L, adsorption time 180 min, and pH value 6-7, 25℃, S2Cl2 modified activated carbon(2.5 g carbon, 1 L solution), the removal rate of Hg2+ was more than 93%.

Key words: furfural residue, modified activated carbon, Hg2+, adsorption

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