1. Quangang Research Institute of Petrochemical Technology; Fujian Normal University; Fuzhou 362807 China
2. State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum; Beijing 102249 China
3. School of Environmental and Chemical Engineering; Nanchang University; Nanchang 330047 China
4. School of Biological Sciences; University of Auckland; Private Bag 92019 Auckland New Zealand