In the present research, microwave-assisted biodiesel production from Camptotheca acuminata seed oil catalyzed by novel Bronsted-Lewis acidic ionic liquid (IL) was investigated. A series of IL catalysts were prepared using Bronsted acidic IL [BSO3HMIM]HSO4 with various metal sulfates for the first time, and the catalytic mechanism of transesterification reaction using the prepared Bronsted-Lewis acidic IL was clarified. The results showed that [BSO3HMIM]HSO4-Fe-2(SO4)(3) represented a superior catalytic activity. Meanwhile, the parameters affecting the microwave-assisted conversion process were studied. A high conversion yield (95.7%) was achieved in short duration (about 60 min) under relatively low (60 degrees C). Analyzing the FAMEs composition by GC-MS and main properties demonstrated that the biodiesel product prepared from C acuminata seed oil was of high quality. In addition, a kinetic model was established for the conversion process. The results showed that microwave-assisted biodiesel production catalyzed by Bronsted-Lewis acidic IL was an efficient and environment-friendly technology for bioenergy industry. (C) 2013 Elsevier Ltd. All rights reserved.