摘要
研究了活性炭纤维填充床脱除水中苯和氯苯的吸附性能,探讨其饱和吸附填充床的再生方法.结果表明:当平衡浓度变化范围为100～300mg/L时,活性炭纤维对水中苯和氯苯的吸附能力分别达280mg/g(吸附剂)和370mg/g(吸附剂),吸附等温线符合Langmuir型;填充床的突破曲线和突破时间强烈依赖于实验条件:较高的进料浓度、以及较短的床层长度都将使填充床突破较快;用120℃的水蒸气再生被氯苯饱和的活性炭纤维填充床,再生效率达93%以上.在低Reynolds数下,轴向扩散对突破曲线影响最大.
\ The application of activated carbon fiber for removal of benzene and chlorobenzene from water was studied. The adsorption capacity of activated carbon fiber is favorable and the adsorption isotherm data can be represented by Langmuir isotherm. For the range of benzene or chlorobenzene concentration from 100～300 mg/L, the adsorption capacity of activated carbon fiber can reach 300 mg/g, and 400 mg/g respectively(sorbent). The activated carbon fiber saturated with chlorobenzene in packed bed can be disposed by using steam for many times with 93 % efficiency of regeneration. On the condition of low Reynolds number, axial dispersion is primary effective factor to breakthrough curve.
出处
《沈阳化工学院学报》
2003年第3期188-192,共5页
Journal of Shenyang Institute of Chemical Technolgy
关键词
活性炭纤维(ACF)
吸附
脱附
苯
氯苯
填充床
突破曲线
activated carbon fiber(ACF)
adsorption
desorption
regeneration
benzene
chlorobenzene
fixed bed
\ breakthrough curve
