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过程工程学报 ›› 2016, Vol. 16 ›› Issue (5): 744-750.DOI: 10.12034/j.issn.1009-606X.216172CSTR: 32067.14.jproeng.216172

• 反应与分离 • 上一篇    下一篇

超重力对活性炭上苯酚脱附性能的影响

武晓娜,刘有智,焦纬洲   

  1. 中北大学山西省超重力化工工程技术研究中心，超重力化工过程山西省重点实验室
  • 收稿日期:2016-04-07 修回日期:2016-05-13 出版日期:2016-10-20 发布日期:2016-10-14
  • 通讯作者: 刘有智 lyzzhongxin@126.com

Influence of High Gravity on Desorption of Phenol from Activated Carbon

WU Xiao-na 1,LIU You-zhi 2,JIAO Wei-zhou 1   

  1. 1. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering
    2. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, Taiyuan
  • Received:2016-04-07 Revised:2016-05-13 Online:2016-10-20 Published:2016-10-14
  • Contact: LIU You-zhi lyzzhongxin@126.com

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摘要： 研究了超重力对活性炭上苯酚脱附性能的影响及脱附动力学，并与传统脱附法进行了对比. 结果表明，在常温、常压、超重力因子??55.14、液体流率为40 L/h、碱液浓度为0.5 mol/L、吸附时间为90 min的条件下，苯酚脱除率达93.01%，较相近条件下传统脱附法提高了3.88倍；采用拟二级动力学模型对实验数据进行拟合，脱附速率常数由较相近条件下传统脱附法的13.66?10?4提高到超重力条件下的29.59?10?4，表明超重力强化了液固传质，对脱附有利；两种方法中以碱液为脱附剂的脱附性能均优于蒸馏水为脱附剂.

关键词: 超重力, 苯酚, 脱附, 速率常数

Abstract: We investigated the desorption of phenol from activated carbon with high gravity technology and the desorption kinetics, compared the results with that of the traditional desorption method. Under the optimal conditions, high gravity factor of 55.14, flow rate of 40 L/h, concentration of NaOH of 0.5 mol/L, the desorption time of 90 min, the phenol desorption efficiency was reached up to 93.01%, 3.88 times higher than that of the traditional desorption method under the same conditions. The pseudo-second-order model was used to study the desorption kinetics. The desorption rate constant improved from 13.66?10?4 to 29.59?10?4 compared with the traditional desorption method. The results showed that the mass transfer between liquid and solid was intensified by high gravity technology, which do favor to desorption process. Moreover, the desorption efficiency by NaOH solution was higher than that of deionized water under two methods.

Key words: high gravity, phenol, desorption, rate constant

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