Biofuels (Energy)

Low Temperature Gasification of Impregnated Biomass Feedstock

Oct 16, 2011

Foster Agblevor

Hybrid poplar biomass feedstocks were impregnated with catalysts and gasified at three different temperatures in a bubbling fluidized bed reactor. The impregnated biomass were gasified in a nitrogen atmosphere at 400 o C, 600 o C, and 800 o C. The gas yield increased with increasing temperature as...

Biomass Energy Systems for Steam, Power, and Fuel Production

AIChE Webinar

Nov 6, 2009

Thomas McGowan

This webinar covers the subject from the forest to stack. The emphasis is on the tried and true, with diagrams and photographs of actual equipment and installations.

The ChE's Role in Energy Research and Technology

April

2009

Special Section

Bond Calloway

Surveys of the energy-related papers presented at AIChE's annual meetings provide insights into the role of chemical engineers in energy science and engineering.

SBE Update: Developing Bioenergy Processes

August

2008

SBE Special Section

Producing Fuels and Chemicals from Lignocellulosic Biomass

August

2008

SBE Special Section

Mark Holtzapple, Rocio Sierra, Aaron Smith, Cesar Granda and Mark T. Holtzapple

As oil and natural gas prices rise, lignocellulosic biomass becomes a viable feedstock for the fuel and chemical industries— provided key issues are addressed.

Towards Developing Anaerobic Digestion Based Biorefinery – Research On Food Wastes As Feedstock

Oct 19, 2011

Shulin Chen

Anaerobic digestion (AD) is a proven technology for waste treatment. However, as the organic material becomes more valuable and being treated as resources, traditional AD process is no longer adequate. The Bioprocessing and Bioproduct Engineering Laboratory at Washington State University has been...

Simultaneous Extracellular Polymeric Substance (EPS) and Lipid Production by Activated Sludge Via Fermentation of Glucose

Oct 19, 2011

Patrisha J. Pham

The use of activated sludge microflora to convert sugars, derived from the hydrolysis of lignocellulose biomass, into lipids for biofuel production is of current research interest in our group. Lipid accumulation in this system has been enhanced by manipulating the carbon-nitrogen (C:N) ratio and...

Effect of Steam Explosion On Degradability and Accessiblity of Loblolly Pine In Bioethanol Applications

Oct 19, 2011

Yuzhi Kang

Abstract Among the various biomass pretreatment methods, steam explosion is one of the most widely used due to its cost-effective disruption of the plant structure and hence enhanced enzymatic accessibility. The operational parameters including temperature, residence time and acid concentration...

BIOCORE - On a Paradigm for the Design and Synthesis of Real-Life Biorefineries

Oct 19, 2011

Aikaterini D. Mountraki

As oil is a fast depleting resource (BP, 2010), much is expected by the production of biofuels as valid options to replace fossil-oil transportation fuels. Biorefineries are not an entirely new concept. Many of the traditional biomass conversion technologies such as the sugar and paper industries...

Incremental Disassembling of Woody Biomass and Production of Biochemicals

Oct 19, 2011

Shijie Liu

Woody biomass is a reliable renewable source of raw materials for energy and chemicals. Woody biomass is structurally composed of cellulose, lignin, hemicelluloses and other minor components. The compositions vary from species to species. The complexity / heterogeneity of woody biomass presents...

An Anaerobic Bacterial Treatment of Corn Stover to Prepare a Biorefining Feedstock

Oct 19, 2011

James MacLellan

Anaerobic Bacterial Treatment of Corn Stover to Prepare a Biorefining Feedstock James MacLellan, Zhengbo Yue, Robert Kraemer, Wei Liao* Department of Biosystems and Agricultural Engineering, Michigan State University East Lansing, Michigan 48823 Abstract The objective of this study is to apply an...

Change of Structure of Corncob with Dilute Acid and Lime Pretreatment and a Potential Process for Xylose Co-Production of Cellulosic Ethanol

Oct 19, 2011

Jihong Li

Degree of polymerization (DP) of cellulose is considered an important factor to effect on the conversion of Lignocellulose. The higher DP of cellulose, the more difficult conversion of lignocellulose is. In this study, corncobs were pretreated with dilute acid process for production of xylose, and...

The Role of Cellulose Accessibility On Enzymatic Saccharification of Lignocelluloses

Oct 19, 2011

Junyong Zhu

So much research has been dedicated to understand the effects of various factors on enzymatic hydrolysis of lignocelluloses. It has been understood that removal of hemicelluloses is very important to improve lignocellulosic substrate digestibility. It has also been identified that improving enzyme...

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...

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...

Lignin Depolymerization and Deoxygenation In Ionic Liquids

Oct 18, 2011

Blair J. Cox

Lignin, an amorphous aromatic biopolymer that comprises up to 30% of plant matter, was dissolved and depolymerized in ionic liquids under acidic conditions. The acidic ionic liquid 1-methylimidazolium chloride (HMIMCl) acts as a combination solvent and catalyst that facilitates degradation of...

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