摘要
研究了水溶液中碳纳米管及包埋固定于海藻酸钠凝胶球中的碳纳米管吸附苯酚的特性,测定了温度、pH值、转速等因素对吸附的影响,并对吸附剂进行了热脱附再生。绘制了吸附等温线,对吸附机理进行探讨。结果表明,碳纳米管及包埋于海藻酸钠凝胶球中的碳纳米管对苯酚的吸附平衡受pH和转速影响不显著,受温度影响显著,简单的热再生即有很好的再生效果。通过方程拟合,2种吸附剂对苯酚的吸附均符合Langmu ir和Freund lich型吸附等温式。
The adsorption of phenol from aqueous solution onto carbon nanotubes and the carbon nanotubes embedded in sodium alginate gel beads were studied. The effects of temperature, pH value and rotational speed were investigated. The adsorbent was regenerated by thermal desorption. The results show that the effects of pH value and rotational speed on carbon nanotubes and the carbon nanotubes embedded in sodium alginate gel beads are remarkable, but the effect of temperature on them is significant. Thermal regeneration has good results. Langmuir and Freundlich adsorption isotherm can well describe the adsorption of phenol on the two kinds of sorbents.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第2期289-292,共4页
Chinese Journal of Environmental Engineering
基金
国家博士后基金资助项目(Lrb05-335)
关键词
碳纳米管
包埋
海藻酸钠
苯酚
吸附
再生
carbon nanotubes
embed
sodium alginate
phenol
adsorption
regeneration
