高聚物吸附剂的孔隙结构和表面特性对苯酚吸附容量的影响

引　言苯酚广泛应用于石油、煤矿、塑料等工业领域 ,因而含酚废水的产生相当普遍[1] 苯酚是强毒性物质 ,排放未经处理的含酚废水会造成严重的环境污染 ,国内外已将苯酚列为重点控制的污染物之一[2 ,3] 对含酚废水的治理技术有微生物降解、溶剂萃取、化学氧化、焚烧、吸附等 ,其中吸附法以其操作简便、成本低廉而备受关注 ,尤其适合于低浓度含酚废水污染的控制[4 ] 活性炭具有巨大的比表面积 ,对有机污染物具有较强的吸附能力 ,但有效的再生技术仍有待解决[5] 多孔固体高聚物吸附　　材料由于具有较大比表面 ,与活性炭相比容易再生[6 ] ,…

EFFECTS OF POROSITY AND SURFACE PROPERTIES OF POLYMERIC RESINS ON ADSORPTION CAPACITY OF PHENOL

In this work the effects of physical and surface properties of polymeric resins on adsorption capacity of phenol were investigated. BET surface areas and pore size distributions of the polymeric adsorption resins，NKA Ⅱ(polar resin)，AB-8(weak polar resin) ，D4006(weak polar resin) and D16(non-polar resin)，were separately measured by ASAP 2010M，and isotherms of phenol on the resins were separately estimated by the method of static adsorption. Results indicated that the adsorption capacity of NKA Ⅱ resin for phenol in dilute aqueous solution was the highest，and the adsorption capacity of AB-8 resin was in the next place；and the micropore volume and polarity of a polymeric resin showed a strong influence on the adsorption capacity of phenol on the resin. Among the four sorts of resin， the adsorption capacity of the NKA Ⅱ resin for phenol was the highest since it is not only polar but also possesses a considerable portion of micropore volume.