摘要
采用紫外分光光度法研究了植物油脂吸附苯酚的性能。考察了吸附时间、温度、苯酚质量浓度、植物油脂的用量、pH值对吸附量的影响;并对植物油脂吸附苯酚的动力学和热力学进行了初步探讨。结果表明,影响植物油脂吸附苯酚的4个因素,其作用大小为:苯酚浓度>油脂质量>振荡温度>溶液pH值。吸附最佳条件为:油脂质量3 g、温度20℃、pH=6.2、苯酚质量浓度20 mg/L,吸附量0.07 mg/g。植物油脂对苯酚的吸附满足Freundlich等温吸附方程。
The adsorption performance of plant oil for phenol was studied by ultraviolet spectrophotometry. The effects of time, temperature, the mass concentration of phenol, the dosage of plant oil, and pH on the adsorption capacity of plant oil for phenol were investigated. The adsorption kinetics and thermodynamics of phenol onto plant oil were also discussed. The results show that the four influencing factors were in the following order of significance ： the mass concentration of phenol 〉 the dosage of plant oil 〉 temperature 〉 pH. The optimum adsorption conditions were the 3 g of plant oil, temperature of 20 ℃ , pH of 6. 2, and the mass concentration of phenol 20 mg/L. The adsorption capacity of plant oil for phenol was 0. 07 mg/g. The adsorption of phenol onto plant oil obeyed Freundlich equation.
出处
《应用化学》
CAS
CSCD
北大核心
2009年第1期37-41,共5页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金(20667003)资助项目
