The ultimate goal of this research is to develop a new VOC abatement system that allows the reduction of the energy consumption and unit cost by applying adsorption technology to medium and small low-concentration VOC treatment units. An experimental and theoretical study was made of the adsorption of single component of ethyl acetate and binary components of ethyl acetate and toluene at low concentration, and also the desorption of adsorbed gas at various purge flow rates of hot nitrogen for concentrating the binary VOC mixtures. Experiments were carried out in dynamic condition using single component of ethyl acetate and binary components of toluene and ethyl acetate as VOC adsorbate. A commercially available coconut shell-based a granular activated carbon was employed as adsorbent. Feed gas VOC concentration were 50-1600 ppm for toluene and 50-2000 ppm for ethyl acetate, and total VOC concentration was adjusted mainly below 600 ppm at which self-sustaining combustion is difficult. Gas velocities was 0.03-0.365 m.s(-1), adsorption and desorption temperatures were 30-180 degrees C. Experimental equilibrium data and breakthrough curves were obtained. In the range of above experimental conditions, adsorption isotherms could be predicted by Langmuir model or extended-Langmuir model. By applying the linear driving force model based on the gas phase concentration (This is referred to as LDFC model) with Langmuir isotherms, theoretical studies of adsorption, desorption and concentration were carried out for low-concentration VOC gas mixtures. The Langmuir equation and extended-Langmuir model were effective for correlating experimental data. Temperature-dependent extended-Langmuir model was applicable to simulation of adsorption and desorption of low-concentration binary VOC gas mixtures and superior for numerical simulation in accuracy and simplicity. It was found that the temperature-dependent extended-Langmuir model and the LDFC model were valid for application to the binary gas adsorption system, and have high potential for effective practical use in development and design of multi-component adsorption systems and its related technologies.