1. Introduction
Methyl tert-butyl ether (MTBE) is extensively used as a gasoline additive to increase the octane rating and promote more complete combustion. In recent years, however, the large-scale use of MTBE has led to the widespread contamination of groundwater. Growing concern has been focused on MTBE contamination control since the U.S. Environmental Protection Agency (USEPA) classified MTBE as a possible human carcinogen [1–4]. Nevertheless, MTBE’s high water solubility, low Henry’s Law constant and resistance to biodegrada- tion complicate its removal from water by conventional treatment techniques [5,6].