Innovative biorefining technologies for complete solid and liquid waste utilizationName : Dr. Roger Ruan
Affliation : Professor
University : University Of Minnesota
Country : USA
Organic solid and liquid wastes, such as animal manure and food wastes, contain large amounts of energy, nutrients, and water, and should not be perceived as merely waste. Recycling, composting, and combustion of non-recyclables have been practiced for decades to capture the energy and values from municipal solid wastes. Treatment and disposal have been the primary management strategy for wastewater. As new technologies are emerging, alternative options for utilization of both solid wastes and wastewater have become available. Considering the complexity of chemical, physical, and biological properties of these wastes, multiple technologies may be required to maximize the energy and value recovery from the wastes. For this purpose, biorefining tends to be an appropriate approach to completely utilize and therefore treat them. Research has demonstrated that the non-recyclable waste materials and bio-solids can be converted into useable heat, electricity, or fuel and chemical through a variety of processes, and the liquid waste streams have the potential to support methane production and crop and algae growth to provide energy recovery and food and feed production options. In this presentation, innovative biorefining schemes especially for organic solid and liquid wastes from municipal sources, food and biological processing plants, and animal production facilities have been proposed. Four new breakthrough technologies, namely intermittent vacuum-assisted thermophilic anaerobic digestion, extended aquaponics, oily wastes to biodiesel via glycerolysis, and microwave assisted catalytic thermochemical conversion, can be incorporated into the biorefining schemes, enabling complete utilization and therefore treatment of those wastes for the production of chemicals, fertilizer, energy (biogas, syngas, biodiesel, and bio-oil), foods, and feeds, resulting in clean water and a significant reduction in pollutant emissions.
Professor Ruan is the Director of Center for Biorefining and Professor of Bioproducts and Biosystems Engineering Department at University of Minnesota, and Fellow of ASABE. He has published over 400 papers in refereed journals, books, and book chapters, and over 300 meeting papers and other reports, and holds 18 US patents. He is also a top cited author in the area of agricultural and biological sciences. He has supervised over 65 graduate students, 110 post-doctors, research fellows, and other engineers and scientists, and 12 of his Ph.D. students and 8 other post-doctors hold university faculty positions. He has received over 160 projects totaling over $40 million in various funding for research, including major funding from USDA, DOE, DOT, DOD, and industries. He has served as guest editor and/or editorial board member of Bioresource Technology, etc. and Editor-in-Chief and chairman of the board for International Journal of Agricultural and Biological Engineering.