摘要
通过ZGSPC106型树脂对水中二甲胺(DMA)的静态吸附、动态吸附和解吸试验,探讨了溶液pH、初始浓度、温度和流速等对树脂吸附DMA的影响以及合适的再生条件。结果表明,该树脂对DMA有较强的吸附能力,293K下树脂的静态饱和吸附量为138.89mg/g;动态吸附试验表明,进液流速为20mL/min较为适宜;以2mol/L的HCl溶液为洗脱剂,在洗脱流速为10mL/min条件下,4倍树脂体积的HCl溶液对饱和树脂的洗脱率达90%以上;该树脂具有良好的稳定性,可多次重复利用。
The static adsorption of dimethylamine （DMA） on three ion exchange resins was performed to select the best absorbent,and ZGSPC106 among the three resins presented the best performance for its adsorption capacity and adsorption rate.Batch experiments of DMA adsorption on ZGSPC106 were conducted,the effect of initial acidity,concentration of DMA,temperature and interfered ions on adsorption capacity were investigated.The adsorption capacity of ZGSPC106,which increased with increasing initial DMA and temperature,was highest under the natural pH.The dynamic experiments showed that 20 mL/min of flow rate was acceptable for dynamic adsorption of DMA from ZGSPC106.The saturated resin was eluted by 2 mol/L hydrochloric at the flow rate of 10 mL/min,the elution percentage could reach as high as 90%.Furthermore,the resin could be well reused due to its good stability.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2010年第9期58-63,共6页
Environmental Pollution & Control
关键词
二甲胺
离子交换树脂
吸附
再生
dimethylamine
ion exchange resin
adsorption
regeneration
