Browsing Auburn Theses and Dissertations by Department "Biosystems Engineering"
Now showing items 81-100 of 123
Optimization of Standard Depth Control Systems to Improve Row-Crop Planter Performance in the Southeast US.
(2016-12-20)
Modern row-crop planters are designed to place individual seeds in the ground at a proper and predetermined depth to promote immediate germination and uniform emergence of seedlings. Seeding depth is manually adjusted by ...
Oxy-Steam Fluidized Bed Gasification of Southern Pine Biomass, Lignite Coal, Plastic Wastes, and their Blends for Hydrogen Production
(2024-12-03)
Rising energy demand, climate change, and waste management issues drive the need to convert waste into energy via thermochemical conversion processes such as gasification. This study explores the potential of producing ...
Physical treatments for reducing biomass ash and effect of ash content on pyrolysis products
(2015-07-23)
There is increasing concern of greenhouse gas effect and the depletion of fossil fuels. Different renewable energy sources such as hydro, wind, solar have been considered as a potential replacement for fossil fuel. Bio-energy, ...
Physicochemical and Ignition Properties of Dust from Loblolly Pine Wood
(2013-07-16)
Energy derived from biomass has attracted considerable attention because of increasing energy demand, high crude oil prices and environment and climate concerns. Biomass must be harvested and processed before conversion ...
Physicochemical Properties and Thermal Decomposition of Torrefied Woody Biomass and Energy Crop
(2012-04-17)
Torrefaction was performed on pine, sweetgum, and switchgrass to determine its effect on the properties and degradation profiles of the biomass, and the influence of feedstock moisture content on the enthalpy of torrefaction ...
Polycyclic Aromatic Hydrocarbons in Biochar and Their Bioavailabilty
(2017-12-08)
Biochar may be utilized as a soil-amendment to sequester carbon and enhance soil fertility through improved nutrient retention, increased plant-available water, and improved drainage for excess water. Before biochar can ...
Precision Agriculture Systems for the Southeast US Using Computer Vision and Deep Learning
(2023-08-10)
Recent advancements in sensors, machine vision and deep learning with the development
of efficient algorithms has enabled new opportunities in precision agriculture. In this dissertation
three different projects are ...
Precision Thermal Environment Monitoring in Commercial Broiler Houses Using Sensor Networks and Machine Learning
(2026-08-05)
Spatial and temporal thermal non-uniformity in commercial broiler houses poses challenges for bird welfare, production efficiency, and environmental management. This dissertation investigated commercial broiler house thermal ...
Prediction of Heating and Ignition Properties of Biomass Dusts Using Near Infrared Spectroscopy
(2014-07-11)
Dusts (i.e. particles of size less than 500 μm) are generated during handling and processing of biomass feedstock. Similar to damages that have been reported from ignition of dusts obtained from industries, ignited biomass ...
A preliminary study of remote control skidder operation
(2016-07-26)
In timber harvesting, skidders are widely used by operators who are in charge of pulling the woods. However, operators have to visually monitor multifarious objects such as loggers, machinery, trail, terrain and trees are ...
Preparation and Characterization of Activated Biochar for Lithium-Sulfur Battery Application
(2017-08-29)
Utilization of low-value, abundant and sustainable biomass materials for high-value energy storage application was the main goal of this thesis. Energy storage for vehicle electrification and intermittent renewable energy ...
Process Modeling and Life Cycle Assessment of a Large Pilot-Scale Aquaponics Facility at Auburn University
(2020-11-13)
Aquaponics has often been hailed as a more sustainable approach to fish and crop production when compared to traditional aquaculture and hydroponics. However, there have been insufficient data to support claim in addition ...
Production of Bio-Composite Filament using Lignin, Polylactic Acid and High Impact Polystyrene for Additive Manufacturing (3D Printing)
(2020-07-11)
Petroleum-based plastics, which are excessively used, are non-biodegradable, and lead to environmental pollution. Plant-based bio-products, on the other hand, are abundantly present, sustainable but are less exploited and ...
Promoting Nitrification in Poultry Processing Wastewater Treatment Using Microalgae and Biochar
(2022-08-03)
The exponential growth of the global population poses a need for more sustainable food production and waste remediation tactics. Waste-to-resource food production systems such as aquaponics and “poultry-ponics” may be the ...
Pyrolysis of Woody Biomass and Waste from Additive Manufacturing for the Synthesis of Chemicals and Transportation Fuels
(2024-12-05)
Generating fuels and chemicals using renewable sources is paramount to mitigate the depletion of energy sources and global warming. Pyrolysis produces bio-oil from the thermochemical conversion of biomass, which can be ...
Quality Evaluation of Live Eastern Oyster (Crassostrea virginica) based on Textural Profiling Analysis, Free Amino Acids Analysis, and Consumer Sensory Evaluation
(2015-07-31)
The consumption of live eastern oyster (Crassostrea virginica) has become an important part of the diet for consumers in the United States. Because large amounts of oysters are grown every year, it is necessary for oyster ...
Quantification of Soil Macropore Characteristics using X-ray Computed Tomography
(2021-08-05)
Soil macropores, such as root channels and earthworm burrows, constitute only a small fraction of the total soil volume but contribute largely to the transport of water and solutes in subsurface flows. One of the challenges ...
Quantifying and Modeling Preferential Flow and Nutrient Loss from Agricultural Soils Fertilized with Poultry Litter.
(2024-07-29)
Fertilizing agricultural fields with poultry litter to meet crop nutrient requirements and using cover crops to improve soil health are important agricultural management practices. Excessive loss of contaminants via surface ...
Quantifying Within-field Variability in Soil Moisture and Nutrients and Scheduling Site-Specific Irrigation Using Numerical Modeling
(2022-06-06)
The increasing global population is expected to increase pressure on water and food demands, which means intensification and improvements in irrigated agriculture are required to satisfy future needs. More than 70% of ...
Rapid peanut phenotyping and water quality monitoring using remote sensing and machine learning techniques
(2022-12-06)
As aerial and sensing technologies have been developed, so have their applications in plant phenotyping and water quality monitoring. This is especially true with respect to the mass manufacture of easily portable quadcopters ...