Bioenergy

Poly(oxymethylene) Dimethyl Ethers As Components of Tailored Diesel Fuel - Properties, Synthesis and Purification Concepts

Oct 18, 2011

Jakob Burger

Poly(oxymethylene) Dimethyl Ethers as components of tailored diesel fuel - properties, synthesis and purification concepts Jakob Burger 1* , Markus Siegert 2 , Eckhard Ströfer 2 , Michael Nilles 2 , Hans Hasse 1 1 Laboratory of Engineering Thermodynamics, University of Kaiserslautern, Germany; 2...

Supercritical CO2 Extraction for Algal Biodiesel Production

Oct 18, 2011

Prafulla Dinkarrao Patil

SC-CO2 is cleaner green technology for extraction of algal lipids/oils for algal biodiesel production. This work offers an optimized method for the direct conversion (One-step) of algal biomass to biodiesel using supercritical CO 2 extraction and supercritical methanol transesterification. SC-CO 2...

Membrane Filtration of Lignocellulosic Hydrolyzates: Comparison of Crossflow and Dead-End Microfiltration

Oct 18, 2011

Bhavin Bhayani

Depleting oil reserves have encouraged the development of technologies to harness the natural resources to sustain the energy needs. Renewable lignocellulosic biomasses have been focus of many studies but advances in the purification and recovering of the products from the product medium has been...

Torrefaction of Switchgrass As a Pretreatment for Catalytic Upgrading of Pyrolysis

Oct 18, 2011

Lance Lobban

The objective of this work is to use thermal pretreatment to separate the complex bio-oil mixture to produce less complex vapor streams of products from 1. light oxygenates (small aldehydes, acids) , 2. furan derivatives, and 3. phenolics. The selective production of products by thermal treatment...

A Model-Assisted Tool for the Characterization of Char In Biomass Pyrolysis and Biomass Catalytic Pyrolysis

Oct 18, 2011

Shoucheng Du

Coke formation appears as a reason for catalyst deactivation and results in undesirable product selectivity in biomass pyrolysis. However, there is no effective way to separate coke and char in the majority of current approaches, which prevents studying coke formation and therefore the real reason...

Integration of a Membrane Based Extraction Process Into a Lignocellulosic Biorefinery

Oct 18, 2011

Ranil Wickramasinghe

In the future, it is anticipated that multi-product biorefineries will be used to convert lignocellulosic biomass to fuels and chemicals, in which, it may be possible to use membrane-based separations to recover fuels and various products and to improve energy efficiency. To biochemically convert...

Realizing the Potential of Advanced Biofuels

Oct 18, 2011

Thomas Foust

Advanced biofuels or drop-in fuels is the terminology used to refer to hydrocarbon fuels that are direct replacements or supplements for existing gasoline, diesel and jet fuels currently refined from conventional petroleum feedstocks. Drop-in fuels from biomass will need to meet all of the refinery...

Acetic Acid Removal From the Hydrolysate Using Reactive Extraction In a Membrane Extractor/Reactor

Oct 18, 2011

Rahul Patil

Production of bioethanol from lignocellulosic biomass requires pretreatment of the biomass to hydrolyze hemicellulose, separate lignin and reduce cellulose crystallinity. During the pretreatment by dilute acid hydrolysis, several grams of acetic acid per liter of hydrolysate is generated. Acetic...

Comparison of Chemical and Biological Delignification of Cardboard

Oct 18, 2011

Estefania Isaza

Some processes aimed to biofuels production, use lignocellulosic wastes as feedstocks for fermentative conversion. If this is the case, pretreatment is required to make these resources fully digestible. Among a wide range of pretreatment options, this study focuses and compares oxidative-alkaline...

Biological Conversion of Algefiber® (Seaweed Sludge) to Carboxylic Acids for Chemical Upgrading to Higher Alcohols Liquid Biofuel

Oct 18, 2011

Sampath A. Karunarathne

Concern about biofuel production from renewable resources has increased globally. Among different approaches to produce biofuels, the MixAlco ™ process is an innovative technology operating on the carboxylate platform, which converts any biodegradable material into mixed alcohol fuels through...

Sub- and Supercritical Water Based Processes for Conversion of Algae Biomass to Fuels and Green Chemicals – A Review

Oct 18, 2011

Philip A. Marrone

Sub- and Supercritical Water Based Processes for Conversion of Algae Biomass to Fuels and Green Chemicals – A Review Philip A. Marrone and Bryan V. Yeh Science Applications International Corporation (SAIC) 60 Wells Ave, Suite 103 Newton, MA 02459 In recent years, there has been increasing...

Cellulose Extraction From Rice Hulls Using Ionic Liquids

Oct 18, 2011

Charles J. Coronella

Over one fifth of calories consumed by humanity are from rice. Consequently, vast quantities of rice hulls are disposed of as waste, since the hull constitutes 20% of rice mass. Standard practice for disposal of rice hulls is burning, generating pollution and CO 2 , or thrown away in vast...

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...

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;...

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...

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