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NKA-Ⅱ大孔吸附树脂吸附高浓度苯胺溶液的试验研究

ADSORPTION OF ANILINE ON NKA-Ⅱ MACROPOROUS ADSORPTION RESIN

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【作者】 占新民王建龙文湘华孔惠杜可钱易

【Author】 Zhan Xinmin Wang Jianlong Wen Xianghua Kong Hui Du Ke Qian Yi(Department of Environmental Engineering, Tsinghua University, National Joint Laboratory of ESPC, Beijing, 100084)

【机构】 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室!北京100084清华大学环境科学与工程系环境模拟与污染?

【摘要】 本文利用NKA-Ⅱ大孔吸附树脂对高浓度苯胺溶液进行了静态吸附试验,希望利用大孔吸附树脂从化工废水中回收苯胺.由实验得到:NKA-Ⅱ大孔吸附树脂对苯胺的吸附速度非常快.在40min内能够完成80%-90%的吸附;吸附过程主要是外表面吸附;可以用弗洛德里希方程表示该静态吸附的吸附等温线;在长时间吸附后(大约4h),苯胺在水溶液中的表现浓度升高,尤其当苯胺溶液的起始浓度为中等浓度时更加明显;吸附过程放出热量(△H<0),并且吸附热同苯胺的起始浓度有关,但当起始浓度非常高时(≥2165mg·1-1),吸附热不随苯胺的起始浓度发生变化.

【Abstract】 NKA-Ⅱ macroporous adsorption resin, made in China, was utilized to adsorb high concentration aniline. It was found that the adsorption of aniline on NKA-Ⅱ was rapid and mainly completed within 40 minutes by the external surface adsorption; Freundlich equation can fit the adsorption data well; after about 5 hours, the apparent concentration of aniline in water rose, especially when the initial aniline concentration was moderate; heat was discharged during adsorption (△H<0); adsorption heat was related to the concentration of aniline, while the adsorption heat did not change much when initial concentration was over 2165 mg·l-1.

  • 【文献出处】 环境化学 ,Environmental Chemistry , 编辑部邮箱 ,1999年04期
  • 【分类号】O647.3
  • 【被引频次】16
  • 【下载频次】202
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