Industrial Biotechnology

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...

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...

Alkaline Deacylation of Corn Stover to Reduce Toxicity of Prehydrolyzates and Improve Enzymatic Hydrolysis

Oct 18, 2011

Urvi D. Kothari

Hydrolysates from dilute acid pretreatment of biomass contain various biomass degradation products which are inhibitory to enzymes and toxic to microorganisms. One of the main inhibitory compounds is acetic acid which is released from the lignin-hemicellulose matrix in the biomass. Acetic acid at...

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...

Enzymatic Hydrolysis of Pulp Dissolved In N Methyl Morpholine Oxide (NMMO) and Ionic Liquids

Oct 17, 2011

Subramanian Ramakrishnan

The first step in the conversion process of biomass to biofuels or hydrogen lies in picking an environmentally friendly solvent which is capable of breaking up the crystalline microstructure of cellulose. Once the cellulose is in suspension, enzymes (cellulases) are added to the reactor to...

Ethanol/Water Biomass Feedstock Separation Through Inorganic A-Type Zeolite Membrane on Thin Porous Ni Sheet Support

Oct 17, 2011

Yuxiang Rao

Bio-Ethanol/water separation by fractional distillation becomes a popular industrial process to remove water from ethanol-water mixture. However, the mixture of 95.6wt% ethanol and 4.4 wt% water is an azeotrope and cannot be further purified by distillation. Alternatively, this can be achieved by...

Coupled Optimization and Simulation for Multi-Biomass Source-to-Biorefinery Supply Chain Modeling and Analysis

Oct 17, 2011

William Faulkner

As cost associated with fossil fuels rise due to various environmental, social, and economic factors, it has become prudent to examine the possibility of exploiting alternative sources of raw materials for the production of energy and chemicals. Biomass, of various forms, has been proposed as an...

Modeling and Scale up of CO2-Water Pretreatment of Guayule Biomass

Oct 17, 2011

Ehsan Moharreri

A carbon dioxide – water pretreatment process was developed for guayule biomass. The guayule biomass was mixed with water and then loaded to a reactor where it was exposed to a biphasic environment consisting of CO2 rich vapor phase and water rich liquid phase. Then, the biomass was enzymatically...

Catalytic Conversion of Biomass Into Carboxylic Acids Via APPO Process

Oct 17, 2011

Hongfei Lin

Converting raw solid biomass into liquid or gas phase intermediates which can be readily upgraded to hydrocarbon fuels is the most challenging or energy intensive step during the biofuel production process due to the complex composition and structure of biomass. We are developing cost competitive...

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...

Effect of Pressure and Heating Rate On Biomass Devolatilization and Gasification

Oct 17, 2011

Pradeep K. Agrawal

The goal of present study is to characterize the effect of pressure and heating rate on the devolatilization behavior of different biomass species. Three biomass species (southern Pine, corn stover, and switchgrass) were studied. A combination of two complementary gasification devices are utilized...

Improved Ethanol Production Through Anaerobic Thermophilic Co-Culture From Various Carbohydrates

Oct 17, 2011

Lei Xu

Saccharification of fermentable sugars is one of the most critical steps in producing bio-ethanol from lignocellulosics through Consolidate Bioprocessing (CBP). However, the extreme pH and ethanol concentration are commonly considered to be the potential inhibitory factors for the application of...

Agent-Based Modeling Analysis of Biomass Feedstock Production System Dynamics and Resilience

Oct 17, 2011

Yogendra Shastri

An efficient and sustainable energy crop production system is essential for the success of the emerging biorefinery industry. However, there is currently a significant lack of understanding regarding the development and dynamics of the biomass feedstock market upstream of the biorefinery, which is...

Ionic Liquid Pretreatment of Wood Biomass Leading to Enhanced Enzymatic Delignification

Oct 17, 2011

Muhammad Moniruzzaman

The biological pretreatment of wood biomass for degrading lignin, a complex aromatic polymer, has received much attention as an environmentally safe or “green” process. Generally, enzymes isolated from naturally occurring fungi, or with enzymes produced by genetically engineered fungi have been...

Catalytic Study On Lignin Degradation and Conversion Into Biofuels

Oct 17, 2011

Yulin Deng

Catalytic study on lignin degradation and conversion into biofuels Wei Mu and Yulin Deng School of Chemical and Biomolecular Engineering and IPST at GT, Georgia Institute of Technology, Atlanta, Georgia 30332-0620 Author for correspondence (e-mail: yulin.deng@chbe.gatech.edu ) As an ideal...

F = MA of Biology?

Oct 17, 2011

Michael W. Deem

I will describe my participation over the past few years in an effort to find fundamental mathematical laws in biology. I will discuss a theory for understanding the emergence of multi-scale, hierarchical structure in biology. I will describe how modular structure in proteins, genetics, and...

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Industrial Biotechnology

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