Influence of Carbon Fiber Modification with Anodic Oxidation on Activated Sludge Immobilization Behavior
-
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。Abstract: 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 immobilization 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 biofilm and the existence of absorbed oxygen on the surface can increase the amount of biofilm.
-
[1] 顾国维.水污染治理技术研究[M].上海:同济大学出版社,1997. [2] 赵庆良,刘淑彦,王琨.复合式生物膜反应器中生物膜量、厚度及活性[J].哈尔滨建筑大学学报,1999,32(6):39-43. [3] Hoehn R C,Ray A D.Effect of thickness on bacterialfilm[J].Wat Pollut Control Fed,1971,45:2302-2320. [4] Huang J.C,Liu Y C.Relationship between oxygen fluxand biofilm performance[J].Wat Sci Techno,1993,7:153-158. [5] 贺福,王茂章.炭纤维及其复合材料[M].北京:科学出版社,1995.113-152. [6] 立本英机,安部郁夫(日)主编.活性炭的应用技术[M].南京:东南大学出版社,2002.23-53. [7] 刘鸿鹏,吕春祥,李永红.电化学表面处理PAN基炭纤维的表面性能研究[J].新型炭材料,2005(1):39-40. [8] 刘杰,何振坤,王绍堂.炭纤维生物膜的形成机制Ⅱ炭纤维表面特性对微生物固着化的影响[J].新型炭材料,2002(9):20-24. [9] 何振坤,刘杰,王绍堂.炭纤维生物膜的形成机制Ⅱ炭纤维表面特性对微生物活性与增殖的影[J].新型炭材料,2003(1):43-47. [10] Liu Jie,Wang Pinghua.Structural characteristic of PANbased ACF-XPS and element analysis[J].New CarbonMaterials(Chinese),1999,14(1):48-52. [11] 房宽峻,蔡玉青.电解质浓度对电化学氧化后碳纤维表面基团含量的影响[J].青岛大学学报,1999(1):7-10. -
点击查看大图
计量
- 文章访问数: 18
- HTML全文浏览量: 9
- PDF下载量: 0
- 被引次数: 0
下载:
