【摘要】 以NDA-150超高交联树脂为吸附剂,邻硝基苯酚为吸附质,氢氧化钠稀溶液为脱附剂,采用微波间歇辐照脱附的方法,对吸附了邻硝基苯酚树脂的再生过程进行了研究。实验结果表明,采用多次、短时间微波辐照时,脱附体系温升速率随初始温度的不断升高而降低;利用这一特点对脱附体系进行辐照,可有效避免体系内“热点”现象的出现。邻硝基苯酚的脱附率随微波辐照时间的增加平缓上升,却随脱附剂浓度的增加而迅速上升,再生过程受脱附剂在树脂孔道内的扩散控制。树脂经多批次微波辐照,吸附性能和化学结构保持稳定。更多还原

【Abstract】 The experimental results indicate that irradiation of microwave is efficient for regenerating the resin(NDA-150)absorbing o-nitro-phenol when using dilute alkali solution as a desorbent,and the irradiation in a short interval for several times can avoid the "hot spots" phenomenon.The desorption efficiency of o-nitro-phenol mildly increases as the irradiation time by microwave increase,but rapidly increases with rise of concentration of alkali.更多还原