中文摘要：

引言 活性炭比表面积大、吸附性能好,广泛应用在空气污染防治和工业废水处理中,如大型通风系统的过滤器、肾透析病房的水处理系统[1-2]。然而,活性炭表面易繁殖细菌,使其本身也成了微生物的污染源,从而影响净化空气或水的效果[3]。

英文摘要：

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.