Iowa State University
University of Kentucky
California Polytechnic State University, San Luis Obispo
University of Nebraska at Lincoln
Deep Neural Network For Complex Open-Water Wetland Mapping Using High-Resolution Worldview-3 And Airborne Lidar Data,
2020
Iowa State University
Deep Neural Network For Complex Open-Water Wetland Mapping Using High-Resolution Worldview-3 And Airborne Lidar Data, Vitor S. Martins, Amy L. Kaleita, Brian K. Gelder, Gustavo W. Nagel, Daniel A. Maciel
Agricultural and Biosystems Engineering Publications
Wetland inventory maps are essential information for the conservation and management of natural wetland areas. The classification framework is crucial for successful mapping of complex wetlands, including the model selection, input variables and training procedures. In this context, deep neural network (DNN) is a powerful technique for remote sensing image classification, but this model application for wetland mapping has not been discussed in the previous literature, especially using commercial WorldView-3 data. This study developed a new framework for wetland mapping using DNN algorithm and WorldView-3 image in the Millrace Flats Wildlife Management Area, Iowa, USA. The study area has several ...
Nutrient Recycling From Aqueous For Nitrogen Supplementation In Algae Growth,
2020
Olivet Nazarene University
Nutrient Recycling From Aqueous For Nitrogen Supplementation In Algae Growth, Alyssa Young
ELAIA
Algae-derived biofuels have the potential to become a source of renewable liquid fuel via hydrothermal liquefaction. However, for algal biofuels to be economically and environmentally feasible, sustainable nutrient recycling must be achieved. Desmodesmus armatus is a microalga to be used in hydrothermal liquefaction, but it is not yet known if the aqueous product waste from the biofuel production process can be recycled as a nitrogen source to support the growth of subsequent cultures of D. armatus. Here, aqueous product was treated with a Dowex 50WX8 resin for twenty-four hours. Growth media was prepared with treated and untreated aqueous product at ...
Mitigation Of Gaseous Emissions From Swine Manure With The Surficial Application Of Biochars,
2020
Iowa State University
Mitigation Of Gaseous Emissions From Swine Manure With The Surficial Application Of Biochars, Zhanibek Meiirkhanuly, Jacek A. Koziel, Baitong Chen, Andrzej Bia?owiec, Myeongseong Lee, Jisoo Wi, Chumki Banik, Robert C. Brown, Santanu Bakshi
Agricultural and Biosystems Engineering Publications
Environmental impact associated with odor and gaseous emissions from animal manure is one of the challenges for communities, farmers, and regulatory agencies. Microbe-based manure additives treatments are marketed and used by farmers for mitigation of emissions. However, their performance is difficult to assess objectively. Thus, a comprehensive, practical, and low-cost treatments are still in demand. We have been advancing such treatments based on physicochemical principles. The objective of this research was to test the effect of the surficial application of a thin layer (?"; 6.3 mm) of biochar on the mitigation of gaseous emissions from swine manure. Two types ...
Soil Nutrients And Carbon Dynamics In The Presence Of Biochar-Swine Manure Mixture Under Controlled Leaching Experiment Using A Midwestern Usa Soil,
2020
Iowa State University
Soil Nutrients And Carbon Dynamics In The Presence Of Biochar-Swine Manure Mixture Under Controlled Leaching Experiment Using A Midwestern Usa Soil, Chumki Banik, Jacek A. Koziel, Mriganka De, Darcy Bonds, Baitong Chen, Asheesh K. Singh, Mark A. Licht
Agricultural and Biosystems Engineering Publications
Biochar application to the soil can improve soil quality and nutrient leaching loss. Recent studies have reported that surficial application of biochar to stored swine manure can reduce emissions of odorous compounds and reduce the volatilization loss of ammonia. Our working hypothesis was that the biochar-treated manure application to the soil would decrease nutrient leaching from manure and increase plant-available nutrients. The study objectives were to evaluate the impact of biochar-treated swine manure on soil total C, N, and other major and minor nutrients. Three biochars (i) neutral pH red-oak (RO), (ii) highly alkaline autothermal corn (Zea mays) stover (HAP ...
Classifying Reflectance Targets Under Ambient Light Conditions Using Passive Spectral Measurements,
2020
University of Kentucky
Classifying Reflectance Targets Under Ambient Light Conditions Using Passive Spectral Measurements, Ali Hamidisepehr, Michael P. Sama, Joseph S. Dvorak, Ole O. Wendroth, Michael D. Montross
Biosystems and Agricultural Engineering Faculty Publications
Collecting remotely sensed spectral data under varying ambient light conditions is challenging. The objective of this study was to test the ability to classify grayscale targets observed by portable spectrometers under varying ambient light conditions. Two sets of spectrometers covering ultraviolet (UV), visible (VIS), and near?infrared (NIR) wavelengths were instrumented using an embedded computer. One set was uncalibrated and used to measure the raw intensity of light reflected from a target. The other set was calibrated and used to measure downwelling irradiance. Three ambient?light compensation methods that successively built upon each other were investigated. The default method used ...
Proof-Of-Concept Of High-Pressure Torrefaction For Improvement Of Pelletized Biomass Fuel Properties And Process Cost Reduction,
2020
Wroc?aw University of Environmental and Life Sciences
Proof-Of-Concept Of High-Pressure Torrefaction For Improvement Of Pelletized Biomass Fuel Properties And Process Cost Reduction, Bartosz Matyjewicz, Kacper ?wiechowski, Jacek A. Koziel, Andrzej Bia?owiec
Agricultural and Biosystems Engineering Publications
This paper provides a comprehensive description of the new approach to biomass torrefaction under high-pressure conditions. A new type of laboratory-scale high-pressure reactor was designed and built. The aim of the study was to compare the high-pressure torrefaction with conventional near atmospheric pressure torrefaction. Specifically, we investigated the torrefaction process influence on the fuel properties of wooden-pellet for two different pressure regimes up to 15 bar. All torrefaction processes were conducted at 300 °C, at 30 min of residence time. The initial analysis of the increased pressure impact on the torrefaction parameters: mass yields, energy densification ratio, energy yield, process ...
Effect Of Biochar Diet Supplementation On Chicken Broilers Performance, Nh3 And Odor Emissions And Meat Consumer Acceptance,
2020
Wroclaw University of Environmental and Life Sciences
Effect Of Biochar Diet Supplementation On Chicken Broilers Performance, Nh3 And Odor Emissions And Meat Consumer Acceptance, Kajetan Kalus, Damian Konkol, Mariusz Korczyński, Jacek A. Koziel, Sebastian Opaliński
Agricultural and Biosystems Engineering Publications
The aim of this research was to evaluate the effect of biochar diet supplementation for broiler chickens on (1) ammonia and odor emissions from manure, (2) feed conversion ratio and daily weight gain, and (3) selected meat quality and sensory parameters. Beechwood biochar (BC, 2 and 4%) and BC–glycerin–aluminosilicates mix (BCM, 3 and 6%) were tested as dietary additives. A total of 750 chicken broilers (Ross 308) were divided into five dietary groups with five replicates per group (n = 5, 30 birds in each replicate) and reared on a littered floor for 5 weeks. Both feed additives showed ...
Reach-Scale Model Of Aquatic Vegetation Quantifies N Fate In A Bedrock-Controlled Karst Agroecosystem Stream,
2020
University of Kentucky
Reach-Scale Model Of Aquatic Vegetation Quantifies N Fate In A Bedrock-Controlled Karst Agroecosystem Stream, Nolan Lewis Bunnell, William I. Ford, Alex W. Fogle, Joseph Taraba
Biosystems and Agricultural Engineering Faculty Publications
In-stream fate of nutrients in karst agroecosystems remains poorly understood. The significance of these streams is recognized given spring/surface water confluences have been identified as hotspots for biogeochemical transformations. In slow-moving streams high in dissolved inorganic nutrients, benthic and floating aquatic macrophytes are recognized to proliferate and drastically impact nutrient fate; however, models that quantify coupled interactions between these pools are limited. We present a reach-scale modeling framework of nitrogen dynamics in bedrock-controlled streams that accounts for coupled interactions between hydrology, hydraulics, and biotic dynamics and is validated using a multi-year, biweekly dataset. A fluvial N budget with uncertainty ...
Synergy Of Thermochemical Treatment Of Dried Distillers Grains With Solubles With Bioethanol Production For Increased Sustainability And Profitability,
2020
Iowa State University
Synergy Of Thermochemical Treatment Of Dried Distillers Grains With Solubles With Bioethanol Production For Increased Sustainability And Profitability, Samuel O’Brien, Jacek A. Koziel, Chumki Banik, Andrzej Bia?owiec
Agricultural and Biosystems Engineering Publications
The bioethanol industry continues improving sustainability, specifically focused on plant energy and GHG emission management. Dried distiller grains with solubles (DDGS) is a byproduct of ethanol fermentation and is used for animal feed. DDGS is a relatively low-value bulk product that decays, causes odor, and is challenging to manage. The aim of this research was to find an alternative, value-added-type concept for DDGS utilization. Specifically, we aimed to explore the techno-economic feasibility of torrefaction, i.e., a thermochemical treatment of DDGS requiring low energy input, less sophisticated equipment, and resulting in fuel-quality biochar. Therefore, we developed a research model that ...
Part 2: Odor-Cued Grab Sampling Of Transient Environmental Odor Events; Mapping The 'Rolling Unmasking Effect' Of Downwind Odor Dispersion,
2020
Don Wright & Associates, LLC
Part 2: Odor-Cued Grab Sampling Of Transient Environmental Odor Events; Mapping The 'Rolling Unmasking Effect' Of Downwind Odor Dispersion, Donald W. Wright, Jacek A. Koziel, David B. Parker, Anna Iwasinska
Agricultural and Biosystems Engineering Publications
Downwind odor characteristics can be very different depending upon the size of the upwind point-source, interim topography, and wind conditions. At one extreme, the downwind odor plume from a relatively large, confined animal feeding operation (CAFO), located on a flat open plain and under stable, near-straight-line wind conditions can be rather broad, sustained and predictable relative to a fixed receptor site downwind. In contrast, the plume from a small point-source (e.g., a roof vent stack) located on irregular topography and under rapidly shifting wind conditions can be intermittent and fleeting. These transient odor events can be surprisingly intense and ...
The Impact Of Surficial Biochar Treatment On Acute H2s Emissions During Swine Manure Agitation Before Pump-Out: Proof-Of-The-Concept,
2020
Iowa State University
The Impact Of Surficial Biochar Treatment On Acute H2s Emissions During Swine Manure Agitation Before Pump-Out: Proof-Of-The-Concept, Baitong Chen, Jacek A. Koziel, Andrzej Bia?owiec, Myeongseong Lee, Hantian Ma, Peiyang Li, Zhanibek Meiirkhanuly, Robert C. Brown
Agricultural and Biosystems Engineering Publications
Acute releases of hydrogen sulfide (H2S) are of serious concern in agriculture, especially when farmers agitate manure to empty storage pits before land application. Agitation can cause the release of dangerously high H2S concentrations, resulting in human and animal fatalities. To date, there is no proven technology to mitigate these short-term releases of toxic gas from manure. In our previous research, we have shown that biochar, a highly porous carbonaceous material, can float on manure and mitigate gaseous emissions over extended periods (days–weeks). In this research, we aim to test the hypothesis that biochar can ...
Is Biochar From The Torrefaction Of Sewage Sludge Hazardous Waste?,
2020
Iowa State University and Wroc?aw University of Environmental and Life Sciences
Is Biochar From The Torrefaction Of Sewage Sludge Hazardous Waste?, Andrzej Bia?owiec, Jakub Pulka, Marzena Styczyńska, Jacek A. Koziel, Joanna Kalka, Marcelina Jureczko, Ewa Felis, Piotr Manczarski
Agricultural and Biosystems Engineering Publications
Improved technologies are needed for sustainable management of sewage sludge (SS). The torrefaction (also known as biomass “roasting”) is considered a pretreatment of SS before use in agriculture. However, it is not known whether the torrefaction has the potential to decrease heavy metals’ (HMs) leachability and the SS toxicity. Thus, the aim of the study was to evaluate the influences of the SS torrefaction parameters (temperature and process time) on HM contents in biochar, HM leachability, and biochar toxicity, and compare them with raw SS. The experiments were designed in 18 combinations (six temperatures, 200, 220, 240, 260, 280, and ...
Effects Of Period And Temperature On Quality And Shelf-Life Of Cucumber And Garden-Eggs Packaged Using Cassava Starch-Zinc Nanocomposite Film,
2020
Kwara State University, Malete
Effects Of Period And Temperature On Quality And Shelf-Life Of Cucumber And Garden-Eggs Packaged Using Cassava Starch-Zinc Nanocomposite Film, Adeshina Fadeyibi, Zinash Delebo Osunde, Mohammed Gana Yisa
Journal of Applied Packaging Research
Nanocomposite film can be used to prolong the shelf-life of fruits and vegetables. This research was undertaken to investigate the effects of packaging period and temperature on the quality and self-lives of cucumber and garden-eggs packaged using cassava starch-zinc nanocomposite film. Hundred grams each of cucumber and garden-eggs were wrapped in a 200× 350 mm size nanocomposite film and low density polyethylene (LDPE) of 2.240± 1.076 × 10-10 gm-1Pa-1s-1 water vapor and 1.568± 0.084× 10-10 gm-1Pa-1s-1 oxygen gas permeability. The products were stored at 10 ...
University Of Kentucky Measurements Of Wind, Temperature, Pressure And Humidity In Support Of Lapse-Rate Using Multisite Fixed-Wing And Rotorcraft Unmanned Aerial Systems,
2020
University of Kentucky
University Of Kentucky Measurements Of Wind, Temperature, Pressure And Humidity In Support Of Lapse-Rate Using Multisite Fixed-Wing And Rotorcraft Unmanned Aerial Systems, Sean C. C. Bailey, Michael P. Sama, Caleb A. Canter, Luis Felipe Pampolini, Zachary S. Lippay, Travis J. Schuyler, Jonathan D. Hamilton, Sean B. Macphee, Isaac S. Rowe, Christopher D. Sanders, Virginia G. Smith, Christina N. Vezzi, Harrison M. Wight, Jesse B. Hoagg, Marcelo I. Guzman, Suzanne Weaver Smith
Mechanical Engineering Faculty Publications
In July 2018, unmanned aerial systems (UASs) were deployed to measure the properties of the lower atmosphere within the San Luis Valley, an elevated valley in Colorado, USA, as part of the Lower Atmospheric Profiling Studies at Elevation – a Remotely-piloted Aircraft Team Experiment (LAPSE-RATE). Measurement objectives included detailing boundary layer transition, canyon cold-air drainage and convection initiation within the valley. Details of the contribution to LAPSE-RATE made by the University of Kentucky are provided here, which include measurements by seven different fixed-wing and rotorcraft UASs totaling over 178 flights with validated data. The data from these coordinated UAS flights consist ...
Design And Testing Of A Multi-Depth Soil Temperature Sensor Array Intended As A Candidate Irrigation Scheduling Tool,
2020
University of Arkansas, Fayetteville
Design And Testing Of A Multi-Depth Soil Temperature Sensor Array Intended As A Candidate Irrigation Scheduling Tool, Lillian Glaeser
Biological and Agricultural Engineering Undergraduate Honors Theses
A crucial measure in the advancement of water conservation and sustainable agricultural strategies is increasing efficiencies of irrigation systems. Because of the lack of availability of affordable, durable, and scalable soil moisture monitoring devices, this thesis proposes a low-cost, multi-depth soil temperature sensor array as a candidate for monitoring soil moisture content and guiding farmer’s irrigation scheduling. Propagation of diurnal temperature waves through soil is dependent on the thermal diffusivity of the soil, which can be determined by examining temperature waves at different soil depths. Thermal diffusivity is dependent on several factors, though, in undisturbed soil, water has the ...
Climate Change And Market-Based Insurance Feedbacks,
2020
University of Nebraska - Lincoln
Climate Change And Market-Based Insurance Feedbacks, Eric R. Holley, Adam Liska, Cory Walters, Geoffrey C. Friesen, Michael Hayes, Max J. Rudolph, Donald A. Wilhite
Adam Liska Papers
Climatic events have accounted for 91% of $1.05 trillion in insured costs for global catastrophic events from 1980 to 2016. Costs are driven by socio-economic development and increased frequency and severity of climatic disasters driven by climate change. Government policies to reduce systemic risk (e.g., cap-and-trade, carbon tax) have been a predominant approach for mitigation and adaptation. Alternatively, market-based incentives for climate change adaptation and mitigation already operate via the insurance industry to lessen impacts on society. Insurance feedbacks include changes in 1) premiums and insurance policies, 2) non-coverage, and 3) policy making and litigation. Alongside government policies ...
Hydraulic Effects Of Perpendicular Water Approach Velocity On Meter Gate Flow Measurement,
2020
California Polytechnic State University, San Luis Obispo
Hydraulic Effects Of Perpendicular Water Approach Velocity On Meter Gate Flow Measurement, John M. Thorburn
Master's Theses
Accurate flow measurement is required to effectively manage water resources. California Senate Bill X7-7 (SB X7-7), legislates this need by requiring agricultural water providers serving areas greater than 25,000 acres to develop an Agricultural Water Management Plan (AWMP) and adopt pricing based at least partly on volumetric water deliveries (DWR, 2009). This study focused on two of the most common flow measurement/flow control devices used in California open channel water conveyance systems: the circular meter gate and the rectangular meter gate. Testing was conducted on three Armco-type (round gates over round discharge pipe) gates measuring 12”, 18”, and ...
Implementation Of Biogas-Based Energy Security Program And Evaluation Of Its Sustainability In Kediri Village, Pringsewu District, Lampung Province,
2020
Chemical Engineering Department, Faculty of Engineering, Lampung University, Indonesia
Implementation Of Biogas-Based Energy Security Program And Evaluation Of Its Sustainability In Kediri Village, Pringsewu District, Lampung Province, Sri Ismiyati Damayanti, Simparmin Ginting, Otik Nawansih, Siti Hudaidah
ASEAN Journal of Community Engagement
The Biogas-based energy security program in Kediri Village, Pringsewu District, Lampung Province, aims to provide awareness and knowledge to villagers about the potential of cow dung to be made into biogas and promote awareness of good environment quality. An evaluation of the sustainability of the program in the community was conducted. The methods that were used in this program are (1) socialization to provide awareness of good environment quality and energy security, (2) digester construction and stove and biogas lamp installation, which was carried out by the community together with certified trainers, (3) creation of a master design of the ...
Pilot-Scale Testing Of Uv-A Light Treatment For Mitigation Of Nh3, H2s, Ghgs, Vocs, Odor, And O3 Inside The Poultry Barn,
2020
Iowa State University and Chungnam National University
Pilot-Scale Testing Of Uv-A Light Treatment For Mitigation Of Nh3, H2s, Ghgs, Vocs, Odor, And O3 Inside The Poultry Barn, Myeongseong Lee, Peiyang Li, Jacek A. Koziel, Heekwon Ahn, Jisoo Wi, Baitong Chen, Zhanbek Meiirkhanuly, Chumki Banik, William S. Jenks
Agricultural and Biosystems Engineering Publications
Poultry farmers are producing eggs, meat, and feathers with increased efficiency and lower carbon footprint. Technologies to address concerns about the indoor air quality inside barns and the gaseous emissions from farms to the atmosphere continue to be among industry priorities. We have been developing and scaling up a UV air treatment that has the potential to reduce odor and other gases on the farm scale. In our recent laboratory-scale study, the use of UV-A (a less toxic ultraviolet light, a.k.a. “black light”) and a special TiO2-based photocatalyst reduced concentrations of several important air pollutants (NH3, CO2, N2O ...
On-Farm Research And Student Engagement To Assess And Promote The Use Of Organic Amendments To Improve Agricultural Soil Health And Resilience Of Crop Production Systems In Nebraska,
2020
University of Nebraska - Lincoln
On-Farm Research And Student Engagement To Assess And Promote The Use Of Organic Amendments To Improve Agricultural Soil Health And Resilience Of Crop Production Systems In Nebraska, Agustin Jose Olivo
Biological Systems Engineering--Dissertations, Theses, and Student Research
In nearly every production environment, there are opportunities to capture profits if waste streams can be further processed or enhanced to create “value added” products. On-farm research studies were initiated in 2019 at four locations across Nebraska to assess the impacts of livestock manure, cedar mulch from forestry management and coal char from sugar beet processing, on agricultural cropland. Study treatments included beef cattle manure (CM), beef cattle slurry (CS), coal char (CC), woody biomass (WB) CM+WB, CS+WB, CM+CC and control (CON; no organic amendment). Soil properties and corn yield were evaluated after a single growing season ...
