胺化松香基大孔树脂吸附水中抗生素性能研究

Study on the Adsorption Performance of an Amine Rosin-Based Macroporous Resin for the Antibiotics Removal from Water

以新型胺化松香基大孔树脂(EDAR)为吸附剂,通过静态吸附实验研究了对抗生素阿莫西林(AMO)和青霉素(PG)吸附性能的影响。结果表明,EDAR对水中的AMO和PG都具有较好的吸附效果,吸附过程符合准2级动力学模型和Langmuir等温吸附方程,其最大平衡吸附量分别为18.21和13.74 mg/g(pH为6.0、30℃时)。吸附过程是吸热的,吸附机制主要为氢键和静电作用。与不同类型商品树脂(XAD-8、L-493、XRD-4、DAX-8和XAD-1180)相比,EDAR具有较好的吸附效果。0.1 mol/L的NaOH溶液脱附效果优于其他脱附液。研究结果拓展了松香资源的高值化利用,可为水处理提供新的技术与材料。

A novel amine rosin-based macroporous resin(EDAR)was used as adsorbent,and the adsorption performance of EDAR for the antibiotic Amoxicillin(AMO)and Penicillin G(PG)from water was studied by static adsorption experiment.The results showed that,EDAR exhibited a remarkable effect on the adsorption of AMO and PG from water.The adsorption process was accorded with the pseudo-second-order kinetic model and the Langmuir isothermal adsorption equation,the maximum adsorption capacity of AMO and PG was 18.21 and 13.74 mg/g at pH 6.0 and 30℃,respectively.The adsorption process of AMO and PG were endothermic and could be attributed to both hydrogen bonding and electrostatic interactions.Compared with other commercial resin(XAD-8,L-493,XRD-4,DAX-8 and XAD-1180),EDAR exhibited the higher adsorption performance.The 0.1 mol/L NaOH solution had better desorption performance than other desorption solutions.The results will extend the high-value utilization of rosin resources,and are helpful to develop the new material in water treatment process.