报告人：Shuguang Deng, Ph.D.

时间：2014年6月5日（周五）下午14:30

地点：前湖校区环材楼C329教室

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报告人简介:

Dr. Shuguang Deng is the Bob Davis professor in the Chemical Engineering Department at New Mexico State University, USA. He received his B.S. and M.S. from Zhejiang University, China in 1984 and 1987, respectively, and his Ph.D. from University of Cincinnati in 1996. Dr. Deng has worked as a research manager in Nanjing Refinery, SINOPEC, China in 1987-1992 and a lead research engineer in The BOC Group Technical Center in Murray Hill, New Jersey, USA in 1996-2002. Prof. Deng joined the faculty of chemical engineering at New Mexico State University in 2003. Prof. Deng’s current research focuses on advanced materials for renewable energy and clean water applications. The energy research projects in his group include algal biofuels, hydrogen storage, carbon nanotubes and graphene based organic solar cells. Dr. Deng has published 140+ journal papers, 20 patents, and has ~2000 ISI citations. Dr. Deng has received numerous awards for his outstanding scholarly achievements. Most recently, Dr. Deng was awarded the Fulbright distinguished chair in energy conservation.

报告内容摘要:

An integrated novel approach was investigated for converting lipid-rich, wet/dry algae (Nannochloropsis Salina) into fatty acid ethyl esters (FAEE) under microwave-mediated supercritical ethanol conditions with a non-catalytic transesterification approach. This process enables simultaneous extraction of lipids from algal biomass and convert/transesterify them into algal biodiesel in a shorter reaction of time and may reduce the energy consumption due to simplified separation and purification steps. High conversion rates can be possible when the extractive-transesterification of algal biomass was performed near-critical or supercritical conditions. Experimental runs were designed to optimize the process parameters such as algae to ethanol ratio, reaction time and co-solvent (hexane) to biomass ratio to evaluate the effect on the algal biodiesel under controlled microwave power conditions. It was found that co-solvent play a vital role in reducing the severity of critical operational parameters and maximize the biodiesel yield. The algal biomass and lipid extracted algae were characterized using FT-IR, TGA, SEM-EDS and TEM methods, whereas algal biodiesel samples were analyzed with GC-MS and FT-ICR MS analysis. It was demonstrated in this work that this direct conversion technique has the potential to provide an energy efficient and economical route for algal biodiesel production.