On Demand Conference Presentations

New Catalytic Technology for Converting Heavy Oils Derived From Alberta Oil Sands Into Petrochemical Feedstock

Oct 18, 2011

Vasily Simanzhenkov

Oil sands operations in Alberta are poised to experience significant growth over the next number of years. Production of 1.31 million bbl/day of synthetic crude oil and bitumen blends from oil sands in 2008 is projected to increase to over 3 million bbl/day by 2018. This guarantees a large output...

Isoconversional Methods Applied to Kinetic Modeling Oxidative Alkaline Pretreatment of Sugarcane Bagasse

Oct 18, 2011

Rocio Sierra

Delignification (decrease of lignin content) has shown to be a valid method to significantly increase lignocellulosic feedstocks digestibility. This operation (widely known as pretreatment) makes these abundantly available and inexpensive feedstocks usable in fermentation processes whose main goal...

Pyrolytic Pathways to Advanced Biofuels

Oct 18, 2011

R. C. Brown

Pyrolysis is the thermal conversion of carbonaceous materials in the absence of molecular oxygen to liquids, solids and gases. In the most general sense, pyrolysis can occur in an inert or reducing atmosphere or within a solvent (including water); it can occur at atmospheric or elevated pressure;...

CO2 Separation From Coal-Fired Power Plants by Regenerable Mg(OH)2 Solutions

Oct 18, 2011

Hari Krishna Bharadwaj

AICHE ABSTRACT CO 2 Separation from Coal-Fired Power Plants by Regenerable Mg(OH) 2 Solutions Hari K. Bharadwaj † , Joo-Youp Lee † *, Xiang Zhou ‡ , Lei Cheng ‡ , Tim C. Keener ‡ † Chemical Engineering Program, ‡ Environmental Engineering Program, School of Energy, Environmental, Biological, and...

Cellulase Inhibition by Pretreatment-Released Biomass Degradation Products

Oct 18, 2011

G. Peter van Walsum

The influence of pretreatment chemistry and the severity of dilute acid pretreatment on the subsequent enzymatic hydrolysis of soluble oligomer-derived and insoluble crystalline cellulose using a commercial enzyme preparation (Novozymes) was investigated. A dilute acid pretreatment was performed on...

Evaluation of Membrane Separations Opportunities within Lignocellulosic Biorefining Processes: Tailoring Membrane Properties

Oct 18, 2011

Jennifer M. Leberknight

Evaluation of Membrane Separations Opportunities within Lignocellulosic Biorefining Processes: Tailoring Membrane Properties Jennifer Leberknight, Amitkumar Gautam, and Todd J. Menkhaus South Dakota School of Mines and Technology Department of Chemical and Biological Engineering 501 East Saint...

Feedstock Mixture Effects On Sugar Monomer Recovery Following Dilute Acid Pretreatment and Enzymatic Hydrolysis

Oct 18, 2011

Michael J. Brodeur-Campbell

Feedstock Mixture Effects on Sugar Monomer Recovery Following Dilute Acid Pretreatment and Enzymatic Hydrolysis Michael Brodeur-Campbell 1 , Jordan Klinger 1 , and David Shonnard 1,2 [1] Department of Chemical Engineering, Michigan Technological University [2] Director Sustainable Futures Institute...

Effects of Mixing Quality On the Kinetics of Biomass Liquefaction

Oct 17, 2011

David M. Lavenson

Abstract: Biochemical conversion is a promising route to produce fuels and chemicals from cellulosic biomass. A key step in the process is biomass liquefaction, where enzymes are used to break down pretreated cellulosic particles. During this process, drastic changes in the mechanical properties of...

The Application of a Model Predictive Control-Based Approach to CO2 Capture Processes: Towards Operational Cost Minimisation

Oct 17, 2011

Alicia Arce

Amine-based chemisorption of CO 2 is a promising near term option for the decarbonisation of large, fixed-point CO 2 emission sources [1] . However, the operational expenditure (OPEX) associated with this technology imposes a significant energy penalty on the power plant. As it is the solvent which...

Power Dissipation In Microwave-Enhanced In-Situ Transesterification of Algal Biomass

Oct 17, 2011

Prafulla Dinkarrao Patil

The main objective of this study was to investigate the power controlled effect on microwave-accelerated simultaneous extraction and transesterification (in situ transesterification) of dry algal biomass. Experimental runs were designed using a response surface methodology and the process...

Development of Novel Electrocatalyst Support In Proton Exchange Membrane Fuel Cells for Automotive Applications

Oct 17, 2011

Sehkyu Park

Proton exchange membrane (PEM) fuel cells have received great attention as an alternative power source for transportation and stationary applications. A membrane-electrode-assembly (MEA) that generates electricity by electrochemical reactions consists of proton exchange membrane as an electrolyte...

Role of Enzyme Blend Composition, Biomass Particle Size and Solids Loading On Pretreated Biomass Saccharification Efficiency

Oct 17, 2011

Shishir PS Chundawat

One of the limitations of screening enzyme combinations using microplate based assays (Gao et al. 2010, Bioresour Technol 101, 8:2770) is that these are typically carried out using milled biomass (1 mm). The crude glycosyl hydrolase mixtures were also analyzed using a high-throughput proteomics...

Inorganic Catalytic Nanofibers for the Production of Hydrogen Via Alkaline Hydrolysis of Biomass

Oct 17, 2011

Nathaniel S. Hansen

Here we propose to develop a farm-scale biorefining system that can convert cellulosic biomass into useable hydrogen gas. In particular, we focus on the development of cost-effective procedures for biomass pretreatment and catalysts for alkaline hydrothermal treatment, which is less studied as...

Kinetic Model for Hydrodeoxygenation Reaction of M-Cresol On Alumina-Supported Pt Catalyst

Oct 17, 2011

Phuong T. Do

Variety of oxygenated compounds are detected in the pyrolysis oils, which leads to a number of associated problems such as low stability and reduced heating values. As a consequence, complete deoxygenation of bio oils with minimum hydrogen uptake is one of the proposed strategies toward improving...

A New Approach for Quantification of Morphology-Property Linkages In Fuel Cell Materials: A Case Study for PEM Fuel Cells

Oct 17, 2011

Emin Caglan Kumbur

Due to the complex morphology and small length scales of many fuel cell materials, experimental quantification of the key properties of these materials can be expensive and quite difficult to conduct, if not impossible. As a result, modeling efforts become an imperative approach to evaluate the...

Steam Reforming of Ethanol-Phenol Mixture As a Model for Biomass Tar

Oct 17, 2011

Guido Busca

Introduction Hydrogen is produced by biomasses through a variety of pyrolysis and gasification processes. Most of these processes are hampered by the coproduction of tars, a mixture of heavy compounds that may result in fouling of heat exchangers and reactors. A steam reforming step is needed to...

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