聚酰胺树脂对苦味酸的吸附性能研究

Investigation on adsorbing properties of polyamide to picric acid

采用静态法和动态法研究了聚酰胺树脂对水中苦味酸的吸附性能。结果表明:在pH=3.0-4.5时,该树脂对苦味酸有较强的吸附能力,30℃时饱和吸附容量为36.03 mg/g。用1％氨水溶液可快速洗脱树脂上吸附的苦味酸,洗脱率达99％以上。树脂易再生,重复使用性能好,可望用于苦味酸废水治理及苦味酸的富集回收。通过红外光谱图,分析了聚酰胺对苦味酸的吸附机理主要属于物理吸附。

Adsorbing properties of polyamide to picric acid in water were studied by using dynamic and static methods. Results show that the resin has highly adsorption capacity and reusing ability. It can absorb picric acid effectively in pH 3.0-4.5. Saturated absorption capacity is 36.03 mg/g at 30癈 .It also has high selectivity of adsorption,and the enrichment can be carried out in the presence of large amounts of organic compounds. The picric acid adsorbed in the resin can be eluted by 1 % ammonia solution quickly...