STUDY ON THE MEASURING METHOD OF ETBE AS A GASOLINE ADDITIVE AND THE BEHAVIOR OF ETBE IN SOIL

Abstract

  The demand for the biofuel has increased in recent times due to increasing energy demand and the need to reduce global warming. As a result, the use of ETBE (Ethyl Tertiary-Butyl Ether) as a gasoline additive to the bioethanol is also on the increase. In this study, the behavior of ETBE in the saturated zone was investigated. Parameters necessary for the prediction of ETBE behavior in soil were measured by using laboratory test. The results showed that 1) The quality of groundwater could be lowered with respect to odor if the water is exposed to ETBE of even 1mg/L or less. 2) Batch test is examined with three kinds of soil. The relation between amount of adsorption and equilibrium liquid phase concentration is linear when the concentration of ETBE solutions is 500mg/L or less. 3) The result of column test which use Toyoura sand and Masa soil, confirmed that the retardation factor of both soil samples is nearly 1.0 and the longitudinal dispersion length of Masa soil is bigger than Toyoura sand. 4) The column test that is able to set the condition similar to the groundwater flow in the ground is more effective than the batch test as the measuring method to obtain the parameter of the advection dispersion analysis of ETBE.