Adsorption Characteristics of ss-Ionone in Water on Granular Activated Carbon

作者：Deng Jing; Shao Yi Sheng^*; Gao Nai Yun; Zhou Shi Qing; Hu Xu Hao

来源：Clean-Soil Air Water, 2012, 40(12): 1341-1348.

DOI：10.1002/clen.201100579

• Drinking water
• Isotherm
• Kinetics
• Odor
• Thermodynamics

The adsorption performance of beta-ionone on four types of granular activated carbon (GAC) in water was investigated through batch experiments. The effect of initial beta-ionone concentrations and natural organic matter (NOM) adsorbed on GAC, adsorption kinetic and isothermal models were also studied. The results showed that four types of GAC all had good adsorption performance for beta-ionone, the equilibrium adsorption amount of the GAC employed was in the order of YK?>?GK?>?MZ-A?>?MZ-B. The adsorption amount increased with increasing initial concentrations. The presence of NOM could reduce adsorption of beta-ionone to a certain extent, and small molecular weight (MW) fractions (particularly <1000?Da) exhibited a remarkably competitive effect on the adsorption of beta-ionone. The experimental data showed good correlation with pseudo-first-order model. Furthermore, adsorption of beta-ionone on GAC fitted Freundlich, Langmuir, and Tempkin isotherms in the range of experimental concentrations, but followed Freundlich isothermal model most appropriate. The thermodynamic parameters were calculated by the results of the experiment, which showed adsorption of beta-ionone on GAC as being endothermic and spontaneous.

• 出版日期2012-12
• 单位同济大学