化工学报 ›› 2012, Vol. 63 ›› Issue (1): 286-291.DOI: 10.3969/j.issn.0438-1157.2012.01.040

• 能源和环境工程 • 上一篇    下一篇

改性活性炭负载高分子季铵盐的杀菌性能

周静茹,裴丽霞,张立志   

  1. 华南理工大学化学与化工学院,传热强化与过程节能教育部重点实验室
  • 收稿日期:2011-06-22 修回日期:2011-08-19 出版日期:2012-01-05 发布日期:2012-01-05
  • 通讯作者: 张立志

Antibacterial property of polymeric quaternary ammonium salt immobilized on modified activated carbon

ZHOU Jingru,PEI Lixia,ZHANG Lizhi   

  1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education,School of Chemistry and Chemical Engineering,South China University of Technology
  • Received:2011-06-22 Revised:2011-08-19 Online:2012-01-05 Published:2012-01-05

关键词: 活性炭, 高分子季铵盐, 杀菌, 吸附

Abstract: Polymeric quaternary ammonium salt was immobilized on activated carbon(AC),by oxidation of AC with concentrated nitric acid,subsequent eletrostatic assembly to produce a high-performance bactericide(P-AC)with good adsorption.The surface characteristics of AC before and after modification were analyzed by Boehm method.The composition and microstructure of P-AC were characterized by FTIR and TG.The adsorption capacity of the obtained P-AC was tested using phenol as a model compound,and the antibacterial activity against E.coli was also measured.The results show that:(1)AC is well modified by concentrated nitric acid,carboxyl and lactone groups of AC increase while the hydroxyl groups decrease;(2)Polymeric quaternary ammonium salt was immobilized on modified AC with loading of 12%(mass),P-AC has lower BET surface area and the pore volume than AC,but has the larger average pore diameter;(3)P-AC exhibits good adsorption property for phenol,which is 82.5% of adsorption capacity of AC;(4)P-AC shows excellent antibacterial property,an antibacterial efficiency for E.coli of 99% can be achieved over a period of 2 hours.And a slight decrease of 5% in antibacterial efficiency can be observed after 10 batches of regeneration-antibacterial action cycle tests.

Key words: activated carbon, polymeric quaternary ammonium salt, antibacterial property, adsorption

中图分类号: