摘要
通过炭纤维电化学表面改性及动态固着代替静态固着,发现好氧池中处理后的聚丙烯腈(PAN)基炭纤维固着能力更好。对改性后炭纤维的表面形貌、表面官能团的种类和含氧官能团的含氧量进行了表征,并根据动、静态固着效果,分析了影响活性污泥固着的关键因素。SEM表面形貌观察表明经过电化学刻蚀后,炭纤维表面粗糙度的增加有利于形成活性污泥的固着。XPS分析显示,电化学表面改性后,C-C键、羧基、羰基等官能团影响活性污泥的表面固着效果,其中羧基的影响最为显著,另外,表面化学吸附氧对活性污泥固着有促进作用。
Current experiment indicates that the activated sludge that contains abundant microorganism can be easy to immobilize on the surface of PAN-based carbon fiber （CF） when the surface of carbon fiber is modified by use of electrochemical oxidation or dynamic immobillzadon replaces static immobilization. Based on characterization of the surface morphology of the carbon fibers, surface oxygenic functional groups and the surface oxygen content, main influence factors which control activated sludge immobilization are analyzed. SEM results indicate that increasing surface roughness is good to biofilm formation. XPS analysis shows that C-C bond,carboxyl,carbonyl are the three main functional groups to influence the biofilrn and the existence of absorbed oxygen on the surface can increase the amount of biofilrn.
出处
《材料开发与应用》
CAS
2007年第5期32-35,45,共5页
Development and Application of Materials
基金
国家自然科学基金(50572092)
关键词
炭纤维
电化学表面改性
活性污泥固着
表面官能团
污水处理
Carbon fiber
Electrochemical surface modification
Activated sludge immobilization
Surface functional groups
Wastewater treatment
