【摘要】 针对水中微量氯乙酸吸附脱除和粉末状膨润土吸附剂实际应用中难以分离的问题,以河北灵寿县膨润土制备的钛柱撑膨润土、成型膨润土及成型钛柱撑膨润土为吸附剂,进行了25℃条件下对水溶液微量卤乙酸的脱除的研究,测得了被吸附物浓度、吸附时间对吸附过程的影响,得出膨润土,钛柱撑膨润土对水中微量氯乙酸都具有很好的吸附性能.成型之后,耐水性增强,吸附性由于其比表面减少而下降,但仍保持良好的吸附性能.此外还测定了膨润土钛柱撑膨润土对氯乙酸吸附的等温线.更多还原

【Abstract】 In the light of the adsorption of trace chloroactic acid in water and the difficulty of separation of powder ben- tonite from water in practical application, study on removal of trace chloroactic acid from aqueous solution at 25℃ have been carried out using Ti-pillared bentonite, formed bentonite and formed Ti-pillared bentonite prepared from Hebei prov- ince as sorbent respectively. Effect of adsorbate concentration and contact time on the adsorption process and the crystal structural change of different modified bentonite were discussed. The results is that bentonite and Ti-pillared bentonite have good adsorption capability. After they are formed, their water-resistant ability is increased and the adsorption capa- bility is decreasebecause of theirsurface reduced,butthey stillhave good adsorption capability.Furthermore,the adsorption isotherm of bentonite and Ti-pillared bentonite to chloroactic acid was also determined .更多还原