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生物质化学工程 ›› 2008, Vol. 42 ›› Issue (2): 30-32.

• 论文 • 上一篇    下一篇

环氧氯丙烷改性花生壳对次甲基蓝的吸附研究

李山1,2, 张丽娜1, 樊君2   

  1. 1. 长安大学 环境科学与工程学院, 陕西 西安 710054;2. 西北大学 化工学院, 陕西 西安 710069
  • 收稿日期:2007-08-24 修回日期:1900-01-01 出版日期:2008-03-30 发布日期:2008-03-30
  • 通讯作者: 樊 君,男,教授,博士生导师,研究方向为光催化在能源、环境等领域的应用研究。

Study on Adsorption of Methylene Blue in Solution with Epichlorohydrin Modified Peanut Shell

LI Shan1,2, ZHANG Li-na1, FAN Jun2   

  1. 1. College of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China;2. College of Chemical Engineering, Northwest University, Xi'an 710069, China
  • Received:2007-08-24 Revised:1900-01-01 Online:2008-03-30 Published:2008-03-30

摘要: 以花生壳为原料,环氧氯丙烷为改性剂,对花生壳进行改性制备吸附剂,并对其吸附次甲基蓝的性能作了较系统的研究。结果表明,在 2.0 g 花生壳中分别加入 1.25 mol/L 的NaOH溶液 45 mL 和环氧氯丙烷 25 mL,控制温度 40℃,搅拌反应 30 min,经过滤、水洗干燥后得到改性的花生壳,用此改性的花生壳吸附次甲基蓝的最佳条件为:处理 100 mg/L 的次甲基蓝溶液 50 mL,用 0.2 g 改性花生壳,pH值在6.48,搅拌吸附 60 min,在此条件下吸附率可达 99%,吸附后的花生壳用 0.5 mol/L NaOH溶液再生,重复使用3次对次甲基蓝的吸附率在 96% 以上;未改性花生壳对次甲基蓝的吸附率仅为 82%。

关键词: 环氧氯丙烷, 花生壳, 次甲基蓝, 吸附

Abstract: An absorbent was prepared from peanut shell by epichlorohydrin modification. Its adsorption performance for methy-lene blue in solution was also studied. The results indicate: the modified peanut shell was obtained by using 1.25 mol/L NaOH solution 45 mL and epichlorohydrin 25mL to modify 2.0g peanuts shell, controlling reaction temperature at 40℃, mixing time for 30min,filtering, water washing and drying. The optimal adsorption condition of modified peanut shell to methylene blue was: 50 mL of 100 mg/L methylene blue solution, 0.2g modified peanut shell, pH value 6.48, stirring time 60min. The adsorption rate of modified peanut shell was 99%. The used peanut shell could be regenerated by 0.5 mol/L NaOH solution. The adsorption rate of regenerated peanut shell after being used three times was over 96%. The adsorption rate of unmodified peanut shell to methylene blue was only 82%.

Key words: epichlorohydrin, peanut shell, methylene blue, adsorption

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