Adsorption of Colored Impurities by Activated Carbons to Recover Terephthalic Acid from PTA Residue
Decolourization by activated carbon is a feasible method to recovery terephthalic acid from purified terephthalic acid (PTA) residue. For removing the colored compounds in the solid residue, the adsorptive behavior of colored impurities on activated carbons was studied in this paper. Effects of temperature, activated carbon types and water content were investigated experimentally. The results show that adsorption of colored impurities in DMSO solution follow the Langmuir isotherm. Different type of activated carbon, AC-I and AC-II, exhibit quite different temperature sensitivities and AC-II is more sensitivity. Addition of water to DMSO solution enhances the adsorption of colored impurities on the activated carbon.
PTA residue Adsorption Decolourization Langmuir isotherm.
Guo Xia Cheng Youwei Wang Lijun Ding Ganhong Li Xi
Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027,Zhejiang, P.R. China
国际会议
第四届中日化工学术研讨会(The 4th Joint China/Japan Chemical Engineering Symposium)(CJCES)
成都
英文
2007-12-19（万方平台首次上网日期，不代表论文的发表时间）