A5016170725- Thermochemical Biomass Conversion Processes
- Forest Biomass Utilization and Management
- Biofuel production and bioconversion
- Nuclear reactor physics and engineering
- Advancements in Solid Oxide Fuel Cells
- Integrated Energy Systems Optimization
- Thermal Radiation and Cooling Technologies
- Hybrid Renewable Energy Systems
- Molten salt chemistry and electrochemical processes
- Granular flow and fluidized beds
- Carbon Nanotubes in Composites
- Bioenergy crop production and management
- Advanced Thermodynamics and Statistical Mechanics
- Biodiesel Production and Applications
- Lignin and Wood Chemistry
- Catalysts for Methane Reforming
- Chemical Looping and Thermochemical Processes
- Power Systems and Renewable Energy
- Real-time simulation and control systems
- Quantum Electrodynamics and Casimir Effect
- Graphene research and applications
- Energy and Environment Impacts
- GaN-based semiconductor devices and materials
- Laser-induced spectroscopy and plasma
- Analytical chemistry methods development
Idaho National Laboratory
2016-2025
Center for Advanced Energy Studies
2016
National Renewable Energy Laboratory
2014
Purdue University West Lafayette
2004-2010
Sandia National Laboratories California
2008
If the singular goal of biomass logistics and design feedstock supply systems is to reduce per-ton cost biomass, these may very well develop with ultimate unintended consequences highly variable reduced quality feedstocks. This paper demonstrates that, due inherent species variabilities, production conditions differing harvest, collection storage practices, this a real scenario that producers suppliers as conversion developers should be aware of. Biomass attributes ash, carbohydrates,...
Terrestrial lignocellulosic biomass has the potential to be a carbon neutral and domestic source of fuels chemicals. However, innate variability resources, such as herbaceous woody materials, inconsistency within single resource due disparate growth harvesting conditions, presents challenges for downstream processes which often require materials that are physically chemically consistent. Intrinsic characteristics, including moisture content, carbohydrate ash compositions, bulk density,...
There is a growing interest internationally to use more biomass for power generation, given the potential significant environmental benefits and long-term fuel sustainability. However, of alone generation subject serious challenges, such as feedstock supply reliability, quality, stability, well comparative cost, except in situations which locally sourced. In most countries, only limited infrastructure exists. Alternatively, co-firing along with coal offers several advantages; these include...
The products from fast pyrolysis of biomass are variable and highly dependent upon feedstock composition, particle size geometry, operating conditions such as heating rate, reaction temperature, sweep gas composition velocity. Microwave is internal to the particles, thereby avoiding convective conductive heat transfer limitations, which facilitates decoupling effects chemical kinetics. This separation allows for elucidation primary original materials' on product yields. To better understand...
Feedstock composition can affect final fuel yields and quality for the fast pyrolysis hydrotreatment upgrading pathway. However, previous studies have focused on individual unit operations rather than integrated system. In this study, a suite of six pure lignocellulosic feedstocks (clean (no bark) pine, whole-tree (including tulip poplar, hybrid switchgrass, corn stover) two blends (equal weight percentages pine/tulip poplar/switchgrass pine/clean pine/hybrid poplar) were prepared...
During gasification, thermally pretreated biomass and <italic>in situ</italic> catalyst yield different carbon conversion efficiencies, though they both reduce tar.
Thermal transport and breakdown in Joule-heated GaN nanowires is investigated using a combination of microphotoluminescence situ TEM characterization. The thermal conductivity the estimated to be <80 W/m·K, which substantially below bulk value. Catastrophic individual observed occur at maximum temperature approximately 1000 K, nanowire morphology near region indicates that failure occurs via decomposition, conclusion validated by images obtained during process.
Interest in biofuels has grown recent years. Unfortunately, biofuel refineries are unable to operate at full capacity due handling and feeding issues as the systems for biomass often poorly designed. To inform more effective reliable systems, this study presents mechanical (moisture, particle size/distribution, bulk density, compressibility, elastic recovery) flow characterization (critical arching distance feed rate a wedge hopper screw feeder) of corn (Zea mays L.) stover. Results showed...
This paper investigates the challenges and solutions associated with integrating a hydrogen-generating nuclear-renewable integrated energy system (NR-IES) under transactive framework. The proposed directs excess nuclear power to hydrogen production during periods of low grid demand while utilizing renewables maintain stability. Using digital real-time simulation (DRTS) in Typhoon HIL 404 model, dynamic interactions between plants, electrolyzers, grids are analyzed mitigate issues such as...
Background: Mechanical preprocessing, which includes particle-size reduction and mechanical separation, is one of the primary operations in feedstock supply system for a lignocellulosic biorefinery. It means by raw biomass from field or forest mechanically transformed into an on-spec with characteristics better suited fuel conversion process. Results: This work provides general overview objectives methodologies preprocessing then presents experimental results illustrating improved size via...
Carbon nanotubes (CNTs) are promising candidates to create new thermionic- and photoemission materials. Intercalation of CNTs with alkali metals, such as potassium, greatly reduces their work functions, the low electron scattering rates small-diameter offer possibility efficient photoemission. This uses a Nd:YAG (YAG denotes yttrium aluminum garnet) laser irradiate single- multiwalled intercalated resultant energy distributions photo- thermionic emitted electrons measured using hemispherical...