中国化学工程学报（英文版）
中國化學工程學報（英文版）
중국화학공정학보（영문판）
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2007年
6期
868-871
,共4页
pyruvic acid%weakly basic polymer sorbents%adsorption%pH
Uptakes of pyruvic acid for two types of commercially available weakly basic polymer sorbents,D301G and D301R,have been measured over a wide pH range and at various salinities of MgSO4. The results show that the overloading adsorption of pyruvic acid occurs on both weakly basic polymer sorbents,and the overloading models can predict the experimental data of uptake very well. The overloading value for D301G is larger than that for D301R. The adsorption isotherm of pyruvic acid for both polymeric sorbents is greatly affected by the solution pH and MgSO4 concentration in the aqueous phase,and a high recovery efficiency of pyruvic acid from aqueous solution can be obtained at the solution pH around 2.
