摘要： 采用XDA-1大孔树脂吸附模拟废水中的邻硝基苯胺，并对其吸附行为及吸附影响因素进行了研究。结果表明，该吸附过程符合Langmuir和Freundlich等温方程；在pH=8，吸附温度为293 K，吸附流速为6 BV/h的条件下，对800 mg/L的邻硝基苯胺模拟废水吸附30 h，邻硝基苯胺平均去除率达到99%。采用95%的乙醇对吸附饱和的树脂进行洗脱，脱附率可达到98%。在上述条件下处理邻硝基苯胺工业废水，每批次处理量为100 BV，废水中的邻硝基苯胺可由416 mg/L降至4.2 mg/L，邻硝基苯胺去除率达99%，COD由830 mg/L降至80 mg/L。

关键词: 邻硝基苯胺, XDA-1大孔树脂, 吸附, 脱附

Abstract: XDA-1 macroporous resin has been used for adsorbing o-nitroaniline in simulated wastewater. Its adsorption behavior and influential factors are investigated. The results show that the adsorption complied with Langmuir and Freundlich isothermal equations. The o-nitroaniline average removing rate reaches 99% when the simulated wastewater initial concentration is 800 mg/L,adsorption time 30 h, pH=8, adsorption temperature 293 K, and adsorption velocity 6 BV/h. The desorption rate reaches 98%, when 95% of ethanol is used for eluting the adsorbed saturated-resin. Treating the o-nitroaniline industrial wastewater under the above conditions,the treatment capacity for every batch is 100 BV,the o-nitroaniline concentration in wastewater can be decreased from 416 mg/L to 4.2 mg/L,the o-nitroaniline removing rate reaches 99% and COD is decreased from 830 mg/L to 80 mg/L.

Key words: o-nitroaniline, XDA-1 macroporous resin, adsorption, desorption

中图分类号: 

• X703