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Richard T. (Rick) Elander | NREL

"Chapter 20: Experimental Pretreatment Systems from Laboratory to Pilot Scale," in Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals (2013) " Improved Xylan Hydrolysis of Corn Stover by Deacetylation with High Solids Dilute Acid Pretreatment," Industrial and Engineering Chemistry Research (2012)

Flowthrough pretreatment with very dilute acid provides .

Nov 10, 2016 · This study, therefore, focused on investigating deconstruction of plant biomass for flowthrough pretreatment at lower temperatures and severities than applied in the past to understand factors that could account for less effective pretreatments at more commercially relevant conditions when applied to poplar, a fast growing hardwood and model .

Biomass pretreatment: Fundamentals toward application .

Nov 01, 2011 · 1. Introduction. Biomass has been defined to be "any material, excluding fossil fuel, which was a living organism that can be used as a fuel either directly or after a conversion process" ().The use of biomass as source of fuel dates back to Peking Man, 460,000 to 230,000 years ago (Binford and Ho 1985), and the use of plant biomass as a fuel for heat, light, and food preparation .

Biomass Chemical - an overview | ScienceDirect Topics

There are currently multiple public databases available related to plant cell wall-related genes and proteins; biomass chemical compositions; and the chemical reactions, interactions, and processes of general chemicals (Table 1).Among them, the databases available for plant cell wall proteins and biomass-degrading enzymes—mainly Carbohydrate-Active enZymes (CAZy)—are useful sources for .

Small-Scale Approaches for Evaluating Biomass .

Jan 01, 2015 · The wet biomass is divided into three equal portions for pretreatment. The reactors for small-scale pretreatment are 0.5-inch-diameter Hastelloy C276 steel tubes sealed by a stainless steel Swagelok threaded coupling (Yang et al., 2009). The caps are not available in Hastelloy metal, so to protect the couplings from acid the ends are sealed .

Bioeconomy 2020 Speaker Bios Page 1 | Department of Energy

Xiaowen Chen is leading the biomass pretreatment and hydrolysis project in the National Bioenergy Center at the National Renewable Energy Laboratory. His main areas of research interests are biomass pretreatment and deconstruction, biorefinery waste to value-added products, reactor design, black liquor utilization through microbial .

Biomass pretreatment with reactive extrusion using enzymes .

A pretreatment that combines a thermo-mechanical process (extrusion) with chemical and biological catalysts to produce fermentable sugars from barley straw (BS) biomass was investigated.

Adding tetrahydrofuran to dilute acid pretreatment .

@article{osti_1412036, title = {Adding tetrahydrofuran to dilute acid pretreatment provides new insights into substrate changes that greatly enhance biomass deconstruction by Clostridium thermocellum and fungal enzymes}, author = {Thomas, Vanessa A. and Donohoe, Bryon S. and Li, Mi and Pu, Yunqiao and Ragauskas, Arthur J. and Kumar, Rajeev and Nguyen, Thanh Yen and Cai, Charles M. and Wyman .

Process Design and Economics for the Conversion . - OSTI.GOV

OSTI.GOV Technical Report: Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbon Fuels and Coproducts: 2018 Biochemical Design Case Update; Biochemical Deconstruction and Conversion of Biomass to Fuels and Products via Integrated Biorefinery Pathways

Cellulosic Biomass Sugars to Advantaged Jet . - OSTI.GOV

@article{osti_1346572, title = {Cellulosic Biomass Sugars to Advantaged Jet Fuel – Catalytic Conversion of Corn Stover to Energy Dense, Low Freeze Point Paraffins and Naphthenes}, author = {Cortright, Randy}, abstractNote = {The purpose of this project was to demonstrate the technical and commercial feasibility of producing liquid fuels, particularly jet fuel, from lignocellulosic materials .

Biological lignocellulose solubilization: Comparative .

The mission of BioEnergy Sciences Center is to understand and overcome the recalcitrance of biomass to conversion by modifying plant cell walls with improved biocatalysts. The papers in this volume are from the plant transformation and the biomass characterization areas, and showcase the multidisciplinary and multi-institutional nature of the .

(PDF) Deconstruction of lignocellulosic biomass to fuels .

Center, National Renewable Energy Laboratory, Golden, Colorado 80401; email: [email protected] 6 Department of Chemical Engineering, Colorado .

Pilot-Scale Batch Alkaline Pretreatment of Corn Stover .

The goal of biomass pretreatment is to increase the enzymatic digestibility of the plant cell wall polysaccharides to produce sugars for upgrading to biofuels. Alkaline pretreatment has the ability to solubilize much of the lignin in biomass while the carbohydrates remain insoluble. With an increased research focus to produce high-value products from lignin, a low molecular weight, lignin-rich .

Physicochemical changes of cellulose and their influences .

Abstract. Pretreatment is commonly used to reduce recalcitrance of the lignin-carbohydrate matrix. In this study, leading pretreatment technologies, including dilute sulfuric acid, liquid hot water, alkaline, and organosolv pretreatments, were applied to the selected Populus trichocarpa genotype with relatively low lignin content to elucidate cellulose physicochemical property changes and .

Flowthrough pretreatment with very dilute acid provides .

Nov 10, 2016 · Photosynthesis is nature's way of capturing and storing solar energy in the form of plant biomass. The reaction pumps the sun's energy uphill to combine carbon dioxide and water that have no heating value to form glucose and other plant components [].Plant biomass is an enormous renewable energy resource that can be utilized as a raw material for conversion of the sugars and aromatics that .

Thermal and Catalytic Process Development Unit | Bioenergy .

Thermal and Catalytic Process Development Unit. The Thermal and Catalytic Process Development Unit (TCPDU) at NREL has state-of-the-art equipment for thermochemical process development and testing, ranging from catalyst and feedstock characterizations to bench-scale reactors to pilot plants.

Characterization of pilot-scale dilute acid pretreatment .

This is the first known work testing pretreatment of deacetylated biomass in pilot-scale reactors for fuel production. Low acid concentrations are desirable because they may eliminate the need for exotic materials of construction for pretreatment reactors. For example, lower-cost stainless steels could be used in place of expensive Hastelloy.

%22Trojan Horse%22 strategy for deconstruction of biomass .

@article{osti_1011221, title = {%22Trojan Horse%22 strategy for deconstruction of biomass for biofuels production.}, author = {Simmons, Blake Alexander and Sinclair, Michael B and Yu, Eizadora and Timlin, Jerilyn Ann and Hadi, Masood Z and Tran-Gyamfi, Mary}, abstractNote = {Production of renewable biofuels to displace fossil fuels currently consumed in the transportation sector is a pressing .

DOE Bioenergy Technologies Office (BETO) 2019 Project Peer .

The pilot plant has a long history of working with industrial clients testing, solving, and advancing their technical objectives since 1987. BETO Consortiums: BPS-BioProcess Separations FCI-Feedstock Conversion Interface ABF-Agile BioFoundry CCB-Chemical Catalysis for Bioenergy

Ethanol Production from Alkaline Peroxide Pretreated .

Wheat straw used in this study contained 44.24 ± 0.28% cellulose and 25.23 ± 0.11% hemicellulose. Alkaline H 2 O 2 pretreatment and enzymatic saccharification were evaluated for conversion of wheat straw cellulose and hemicellulose to fermentable sugars. The maximum yield of monomeric sugars from wheat straw (8.6%, w/v) by alkaline peroxide pretreatment (2.15% H 2 O 2, v/v; pH 11.5; 35 °C .

Integrated Biorefinery Research Facility | Bioenergy | NREL

NREL's Integrated Biorefinery Research Facility (IBRF) enables researchers and industry partners to develop, test, evaluate, and demonstrate processes and technologies for the production of bio-based products and fuels. In addition to the facility itself, NREL's world-renowned expert staff works .

The Effect of Flow Rate of Compressed Hot Water on Xylan .

Sep 18, 2003 · Flowing hot water through cellulosic biomass offers many promising features for advanced pretreatment, and a better understanding of the mechanisms responsible for flowthrough behavior could allow us to capitalize on its key attributes while overcoming its limitations. In this study, extensive data were developed to show the effect of flow on the fate of hemicellulose, lignin, and total .

Comparative sugar recovery and fermentation data following .

Mar 17, 2009 · Introduction. Cellulosic or plant biomass in such forms as agricultural and forestry residues, substantial portions of municipal solid waste, and herbaceous and woody crops grown to support energy production can provide a unique, low cost, and powerful resource for large scale sustainable production of fuels and chemicals that cannot be otherwise met. 1 Liquid fuels made from .

An overview of key pretreatment .

Feb 03, 2015 · AFEX is another type of physico-chemical pretreatment in which lignocellulosic biomass is treated with liquid ammonia at relatively moderate temperature (90–100 °C) for a period of 30–60 min. followed by a rapid pressure release (Kim et al. 2011). It results in a rapid expansion of the liquid ammonia that causes swelling and physical .

(PDF) Deconstruction of lignocellulosic biomass to fuels .

Center, National Renewable Energy Laboratory, Golden, Colorado 80401; email: [email protected] 6 Department of Chemical Engineering, Colorado .

Engineering aspects of hydrothermal pretreatment: From .

Mar 01, 2020 · These pretreatment processes are mainly intended to enhance the amenability of the cellulose to enzymatic deconstruction, but also induce changes in the plant biomass cell wall structures and alter the biomass composition (Kristensen .

Current perspective on pretreatment technologies using .

Mar 01, 2020 · 1. Introduction. Energy is a critical factor that controls the socio-economic development of a country. As per Global Status Report on energy the large majority i.e. 78.4% is met by non-renewable fossil fuels such as petroleum, coal and natural gases and merely 19% from renewable resources such as solar, hydropower, wind, and biomass [].Fossil fuels are in finite amount and causes severe .

Assessment of municipal solid waste for valorization into .

Jun 10, 2019 · Dilute‐acid pretreatment was conducted with a Dionex ASE 350 Accelerated Solvent Extractor (Dionex Corporation, Sunnyvale, CA) following the NREL method. 12 Pretreatment was conducted in fixed‐volume mode with a 10% (wt/wt) solids loading using 1% H 2 SO 4 (wt/wt) at 160°C for 7 min (Severity [Log R o] = 2.61). This pretreatment time was .

Biological lignocellulose solubilization: Comparative .

The mission of BioEnergy Sciences Center is to understand and overcome the recalcitrance of biomass to conversion by modifying plant cell walls with improved biocatalysts. The papers in this volume are from the plant transformation and the biomass characterization areas, and showcase the multidisciplinary and multi-institutional nature of the .

The use of high‐solids loadings in biomass pretreatment—a .

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