摘要
利用长春南湖水体培养生物膜,研究自然水体生物膜对苯酚及对硝基苯酚的吸附特性及pH值对生物膜吸附苯酚及对硝基苯酚的影响.结果表明,Freudlich方程、Langmuir方程均能较好地描述生物膜对苯酚及对硝基苯酚的吸附.生物膜吸附苯酚、对硝基苯酚的过程中表现出对酸、碱的缓冲能力,具有两性表面特性.生物膜对苯酚的吸附在pH=5-9范围内,随pH值的升高而增加,生物膜对对硝基苯酚的吸附随pH值的升高而减小.溶液中pH值的变化,改变了酚类化合物的存在形态,从而影响生物膜对酚类的吸附.
The adsorption characteristics of phenol and p-nitrophenol onto natural surface coatings （ biofilms and associated minerals, collected in the Nanhu Lake, Changchun, China） and the effect of pH on phenol and p-nitrophenol adsorption onto natural surface coatings were examined. The results show that Freundlich and Langmuir models are all fit in with describing the adsorption behavior of phenol and p-nitrophenol on natural surfaces coatings. During the adsorption procedure, surface coatings showed amphoteric properties and can buffer the acids or alkalis in the solution. With pH from 5 to 9, the sorption amount of phenol increased with increasing pH, however, the sorption amount of p-nitrophenol decreased with increasing pH. The variety of pH in solution could affect the species and adsorption of phenol and p-nitrophenol.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2007年第2期315-319,共5页
Journal of Jilin University:Science Edition
基金
国家自然科学基金(批准号:20477014)
高等学校博士学科点专项科研基金(批准号:20020183056)
