球状活性炭制备及其对DL-β-氨基异丁酸的吸附

Preparation of spherical activated carbon and its adsorption on DL-β-aminoisobutyric acid

探究自制的球状酚醛树脂基活性炭(PFSAC)对DL-β-氨基异丁酸(DL-β-AIBA)的吸附能力,考察PFSAC作为一种医治慢性肾功能衰竭口服药用炭的可行性。进行了一系列实验,包括吸附等温线的测定、吸附速率的测定、3 h吸附率的测定。结果表明:PFSAC对DL-β-AIBA的吸附行为属于Langmuir吸附;吸附速率拟合结果与准二级动力学方程的契合度很好;PFSAC的孔径在1.0~1.8 nm的孔容大小与DL-β-AIBA的饱和吸附容量有良好的线性关系;PFSAC对DL-β-AIBA 3 h的吸附率达到58%以上,表明PFSAC可以快速高效地吸附DL-β-AIBA。

The adsorption capacity of phenolic resin-based spherical activated carbon(PFSAC) on DL-β-aminoisobutyric acid(DL-β-AIBA)and its feasibility as an oral medicinal coal for treating chronic renal failure(CRF) were investigated.A series of experiments were performed,including the experiment of the adsorption isotherms and the experiment of the adsorption rates and the adsorption rate for 3 h.Results showed that the adsorption of PFSAC on DL-β-AIBA belong to Langmuir adsorption,and the fitting rate of adsorption rate was in good agreement with the quasi-second-order kinetic equation.The pore volume of the phenolic PFSAC with a pore size of 1.0~1.8 nm has a good linear relationship with the adsorption capacity of DL-β-AIBA.And the adsorption rate of PFSAC to DL-β-AIBA for 3 h reached more than 58%.It showed that DL-β-AIBA can be adsorbed by PFSAC quickly and efficiently.