Abstract:

Activated carbon fiber based on luffa sponge fiber(LSF-ACF) has been applied to the adsorption of phenol in simulated wastewater. The effects of temperature,pH,dosage and initial concentration on its adsorption efficiency are investigated. The adsorption equilibrium model and adsorption kinetics model are studied. The research results indicate that acidic and slightly alkaline condition(pH≤9) is beneficial to LSF-ACF in the adsorp-tion of phenol.The removing rate of phenol tends to reach the maximum value(96.5%),reaching kinetic equilibrium,when the dosage is higher than 8 g/L in the wastewater. The adsorption curves R² that have been fitted with both Langmuir and Freundlich adsorption isotherm curves are above 0.95. The adsorption of phenol solution by LSF-ACF complies with pseudo second order reaction kinetics. The R² reaches 0.999 8.

Key words: luffa sponge, activated carbon fiber, adsorption, phenol

摘要：

用生物质海绵基活性炭纤维 （LSF-ACF）吸附模拟废水中的苯酚，考察了温度、pH、投加量以及苯酚初始浓度对吸附效果的影响，研究了吸附平衡模型和吸附动力学模型。结果表明：酸性或弱碱性（pH≤9）条件下有利于LSF-ACF吸附苯酚；当投加量>8 g/L时，LSF-ACF对苯酚的去除率趋于最大值（96.5%），达到动态平衡；由Langmuir和Freundlich吸附等温模型拟合出来的吸附曲线R²都达到0.95以上；LSF-ACF对苯酚溶液的吸附符合拟二级反应动力学，R²为0.999 8。

关键词: 生物质海绵, 活性炭纤维, 吸附, 苯酚

CLC Number: 

• TQ424