不锈钢表面生物膜电化学性质与稳定性

Electrochemical Properties and Stability of Biofilm on Stainless Steel Surface

摘要:

以天然水体为挂膜介质,在304号不锈钢表面培养生物膜.以多糖、脂磷为生物量表征参数,研究开路电位和不锈钢表面生物膜生物量的相关性,并使用扫描电镜表征生物膜形貌.此外,利用紫外线处理生物膜样品.结果表明,在一定开路电位范围内,不锈钢表面生物膜生物量与开路电位具有很好的拟合关系,开路电位可以作为生物量的检测手段.不锈钢表面生物膜具有一定的抗剥离能力,一旦形成将难以剥离.

Abstract:

The paper presents a study of the electrochemical property,open circuit potential(OCP),and its relationship with the biomass(measured with polysaccharide and phospholipids) of biofilms.Scanning electronic microscopy(SEM) was used to characterize the biofilm morphology.In addition,the biofilms were treated with UV rays.The results show that certain OCP value variation period is consistent with the biomass increasing on stainless steel surface,and OCP can be an available parameter for biofilm characterization.Biofilms are resistant to UV rays and can not be removed easily after formation.