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Full-Text Articles in Life Sciences

Modelling Animal Waste Pathogen Transport From Agricultural Land To Streams, Pramod K. Pandey, Michelle L. Soupir, Charles D. Ikenberry Dec 2013

Modelling Animal Waste Pathogen Transport From Agricultural Land To Streams, Pramod K. Pandey, Michelle L. Soupir, Charles D. Ikenberry

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The transport of animal waste pathogens from crop land to streams can potentially elevate pathogen levels in stream water. Applying animal manure into crop land as fertilizers is a common practice in developing as well as in developed countries. Manure application into the crop land, however, can cause potential human health. To control pathogen levels in ambient water bodies such as streams, improving our understanding of pathogen transport at farm scale as well as at watershed scale is required. To understand the impacts of crop land receiving animal waste as fertilizers on stream's pathogen levels, here we investigate pathogen ...


Swine Manure & Aqua-Ammonia Nitrogen Application Timing On Subsurface Drainage Water, Matthew J. Helmers, Xiaobo Zhou, Carl H. Pederson Nov 2013

Swine Manure & Aqua-Ammonia Nitrogen Application Timing On Subsurface Drainage Water, Matthew J. Helmers, Xiaobo Zhou, Carl H. Pederson

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

In Iowa and many other Midwestern states, excess water is removed artificially throughsubsurface drainage systems. While these drainage systems are vital for crop production, nitrogen (N) added as manure or commercial fertilizer, or derived from soil organic matter, can be carried as nitrate-nitrogen (NO3-N) to downstream water bodies. A five-year, five-replication, field study was conducted in north-central Iowa with the objective to determine the influence of seasonal N application as ammonia or liquid swine manure on flow-weighted NO3-N concentrations and losses in subsurface drainage water and crop yields in a corn-soybean rotation. Four aqua-ammonia N treatments (150 or 225 ...


Greenhouse Gas Emissions From Land-Applied Swine Manure: Development Of Method Based On Static Flux Chambers, Kelsey M. Bruning, Jacek A. Koziel, Devin L. Maurer, Tanner Lewis, Danica Tamaye, William Salas Nov 2013

Greenhouse Gas Emissions From Land-Applied Swine Manure: Development Of Method Based On Static Flux Chambers, Kelsey M. Bruning, Jacek A. Koziel, Devin L. Maurer, Tanner Lewis, Danica Tamaye, William Salas

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

A new method was used at the Ag 450 Farm Iowa State University (41.98N, 93.65W) from October 24, 2012 through December 14, 2012 to assess GHG emission from land-applied swine manure on crop land. Gas samples were collected daily from four static flux chambers. Gas method detection limits were 1.99 ppm, 170 ppb, and 20.7 ppb for CO2, CH4 and N2O, respectively. Measured gas concentrations were used to estimate flux using four different models, i.e., (1) linear regression, (2) non-linear regression, (3) non-equilibrium, and (4) revised Hutchinson & Mosier (HMR). Sixteen days of baseline measurements (before ...


Formation And Development Of Effective Student Teams To Facilitate Team-Based Learning, Gretchen A. Mosher Oct 2013

Formation And Development Of Effective Student Teams To Facilitate Team-Based Learning, Gretchen A. Mosher

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The ability to work in an effective team has been identified by employers as a key skill for students entering the work force. Furthermore, a desire for active learning by both students and faculty has also increased the use of team-based learning. However, team-based learning also has its drawbacks – notably, managing conflict among team members, reconciling differing levels of effort by students, and the construction of a fair and effective method of assessment for teambased work. Highly developed and cohesive teams allow the focus of the classroom to be on engaged and transformative learning, yet previous research has focused mostly ...


Heat Production Of Nursery And Growing Piglets, Tami M. Brown-Brandl, John A. Nienaber, Roger Eigenberg, Hongwei Xin, Morgan D. Hayes Jul 2013

Heat Production Of Nursery And Growing Piglets, Tami M. Brown-Brandl, John A. Nienaber, Roger Eigenberg, Hongwei Xin, Morgan D. Hayes

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Heat and moisture production (HMP) values are used to size ventilation fans in animal housing. The HMP values that are currently published in the ASABE standards were from data published in 1975. This study is one of a series of studies being conducted to update the HMP values for the ASABE and ASHRAE (American Society of Heating Refrigeration, and Air Conditioning Engineers) Standards. This study focused on the HMP measurements on nursery and growing pigs in the weight range of 8 to 44 kg. Ninety-six nursery pigs were randomly assigned to one of 24 pens (4 pigs /pen) and subjected ...


Low-Moisture Anhydrous Ammonia (Lmaa) Pretreatment Of Corn Stover, Minliang Yang, Weitao Zhang, Kurt A. Rosentrater Jul 2013

Low-Moisture Anhydrous Ammonia (Lmaa) Pretreatment Of Corn Stover, Minliang Yang, Weitao Zhang, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Ethanol has been widely used as an alternative to fossil fuels. In recent years, much attention has been devoted to ethanol production from lignocellulosic biomass. In previous research, low-moisture anhydrous ammonia (LMAA) pretreatment was investigated due to its high efficiency and less washing compared to other pretreatment methods. The purpose of this study was to determine optimal conditions resulting in highest glucose yield and lowest ammonia input using the LMAA processing. In this experiment corn stover was used with different moisture contents (20, 50, 80 wb %) and particle sizes (<0.09, 0.09-2, >2 mm). Corn stover was ammoniated with a loading rate of ...


Analysis Of Storage Methods And Tarping Practices For Corn Stover Bales, Brittany N. Schon, Matthew J. Darr, Keith E. Webster, Nicole Jennett Jul 2013

Analysis Of Storage Methods And Tarping Practices For Corn Stover Bales, Brittany N. Schon, Matthew J. Darr, Keith E. Webster, Nicole Jennett

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

In 2011 and 2012, Iowa State University conducted storage trials for large, rectangular corn stover bales to determine the most effective storage method for companies and farmers harvesting corn stover. Over 2000 bales were used for different storage trials, and five storage configurations were tested. Standard outdoor tarped and indoor stacks proved to be the most effective in preserving bale quality and limiting deterioration, with dry matter losses below 5% in 2012. Moisture content of the bales was studied by collecting pre and post-storage moisture contents of the bales. It was found that all bales, no matter the initial moisture ...


Development And Validation Of A Technoeconomic Analysis Tool For Early-Stage Evaluation Of Biorenewable Processes, Joshua Thomas Claypool, D. Raj Raman Jul 2013

Development And Validation Of A Technoeconomic Analysis Tool For Early-Stage Evaluation Of Biorenewable Processes, Joshua Thomas Claypool, D. Raj Raman

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The production of bio-based chemicals has received tremendous attention in recent years, but little has been done to understand the broad patterns of the economics of different processes for making these molecules. The diversity of potential chemicals simultaneously makes such an understanding both important and difficult to glean during these early-stages. By using cost correlations and standard scale-factors, a spreadsheet-based early-stage cost estimation tool was developed. The tool, named BioPET (Biorenewables Process Evaluation Tool), allows users to specify up to seven primary unit operations (fermentation, separation, three catalytic stages, and purification), and basic defining inputs for each operation. With these ...


Kinetics Of Phosphorus Sorption In Vegetative Treatment Area Soils, Kelsey B. Regan, Daniel S. Andersen Jul 2013

Kinetics Of Phosphorus Sorption In Vegetative Treatment Area Soils, Kelsey B. Regan, Daniel S. Andersen

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Vegetative treatment systems have been proposed and are being utilized to treat runoff from animal feeding operations. These systems use soil and vegetation to remove contaminants (solids, phosphorus, and nitrogen) from the feedlot runoff water and limit potential impacts runoff could have on water quality. Research has shown that these systems soils play a key role in retaining the phosphorus. Thus, the purpose of this experiment was to determine the rate of phosphorus sorption by the soil and in so doing evaluate the impact the runoff contact time with the soil has on phosphorus removal from the solution and retention ...


The Impact Of Carbohydrate And Protein Level And Sources On Swine Manure Foaming Properties, Mark B. Van Weelden, Daniel S. Andersen, Kurt A. Rosentrater, Brian J. Kerr, Steven L. Trabue Jul 2013

The Impact Of Carbohydrate And Protein Level And Sources On Swine Manure Foaming Properties, Mark B. Van Weelden, Daniel S. Andersen, Kurt A. Rosentrater, Brian J. Kerr, Steven L. Trabue

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

This study explored the impact of swine diet on the composition, methane production potential, and foaming properties of manure. Samples of swine manure were collected from controlled feeding trials with diets varying in protein and carbohydrate levels and sources. Protein sources consisted of corn with amino acids, corn-soybean meal with amino acids, corn-soybean meal, corn-canola meal, corn-corn gluten meal, and corn-poultry meal. Carbohydrate sources consisted of corn-soybean meal, barley, beet pulp, distillers dried grains with solubles (DDGS), soy hulls, and wheat bran. Manure samples were tested for a number of physical and biochemical parameters, including total solids, volatile solids, viscosity ...


Physical Properties Of Extruded Corn Coproducts, Jordan J. Foley, Kurt A. Rosentrater Jul 2013

Physical Properties Of Extruded Corn Coproducts, Jordan J. Foley, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

As the world population continues to grow, the demand for human food and animal feed grows exponentially. Aquaculture is the food sector, which has been growing at the greatest rate for several years. Because of the expense of fishmeal in aquaculture fees, an inexpensive protein source could be corn-based proteins. Although many studies have focused on the effects of extruding corn-based blends along with other supplement ingredients, few studies have focused on the extrusion of individual corn-based ingredients. This study examined physical effects of extrusion on distillers dried grains with soluble (DDGS) and corn. Specific objectives included determining moisture content ...


Optimization Of The Pyrolysis Of Distillers Dried Grains With Solubles, Christine Wood, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater Jul 2013

Optimization Of The Pyrolysis Of Distillers Dried Grains With Solubles, Christine Wood, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

As the quantity of distillers dried grains with solubles (DDGS) produced in the U.S. continues to expand, so too does the need for value-added applications. This study examined the use of extracting energy from DDGS using pyrolysis. Various pyrolysis parameters were used to produce bio-oil and bio-char from DDGS. Characterization of the bio-oil and bio-char included mass density, thermal conductivity, thermal diffusivity, apparent viscosity, and energy content and was used to determine optimal processing parameters. The bio-oil produced from DDGS was found to be comparable to bio-oils produced from other biomass, but also had some more desirable characteristics. Heating ...


Some Properties Of Evolving Distillers Dried Grains With Solubles (Ddgs) In 2012, Weitao Zhang, Kurt A. Rosentrater Jul 2013

Some Properties Of Evolving Distillers Dried Grains With Solubles (Ddgs) In 2012, Weitao Zhang, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

With the rapid development of the ethanol industry, various research on distillers dried grains with solubles (DDGS) as a main co-product from the ethanol industry has been done in recent years. However, related research about basic properties to DDGS lacks of comprehensiveness. This study examined 18 samples from 10 plants in Midwest area and utilized standard laboratory methods to measure a series of properties. Final results showed moisture content of 8.69% (w.b.), water activity of 0.55, angle of repose of 48.04 º, geometric mean diameter (dgw) of 0.74 mm, geometric standard deviation (Sgw ...


Swine Manure Rate, Timing, And Application Method Effects On Post-Harvest Soil Nutrients, Crop Yield, And Water Quality Implications In A Corn-Soybean Rotation, Syed I. Ahmed, Steven K. Mickelson, Carl H. Pederson, James L. Baker, Rameshwar S. Kanwar, Jeffery C. Lorimor, David F. Webber Jul 2013

Swine Manure Rate, Timing, And Application Method Effects On Post-Harvest Soil Nutrients, Crop Yield, And Water Quality Implications In A Corn-Soybean Rotation, Syed I. Ahmed, Steven K. Mickelson, Carl H. Pederson, James L. Baker, Rameshwar S. Kanwar, Jeffery C. Lorimor, David F. Webber

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

This report documents results from a six-year study (1996-2001) that evaluated effects of liquid swine manure application management practices on soil nutrients, organic matter, pH, crop yield; and also discussed water quality implications. Swine manure management practices included single-rate (SR) and double-rate (DR) nitrogen (N)-based application rates (168 and 336 kg N ha-1, respectively), three timings (fall injection [FI], winter broadcast [WB], and spring injection [SI]), and two methods (broadcast and injection) of liquid swine manure. Analysis of these practices involved comparing levels of residual soil total phosphorus (P) as Bray-1 available P (RSP), residual soil nitrate-N (RSN ...


Heat And Moisture Production Rates Of A Modern U.S. Swine Breeding-Gestation-Farrowing Facility, John P. Stinn, Hongwei Xin Jul 2013

Heat And Moisture Production Rates Of A Modern U.S. Swine Breeding-Gestation-Farrowing Facility, John P. Stinn, Hongwei Xin

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Currently, swine building ventilation design is based on heat and moisture rates measured in the 1950s and 1970s. Advancements in genetics, nutrition and management practices to increase productivity and pork quality during this period likely have led to considerable changes in heat and moisture production rates of the animals and their housing systems. This study quantifies total heat production rate (THP), house-level moisture production rate (MP) and house-level sensible heat production rate (SHP) of a 4300-sow breeding, gestation, and farrowing facility in Iowa for 17 consecutive months. THP was determined using indirect animal calorimetry, MP was determined from mass balance ...


Effects Of Deterioration Parameters On Storage Of Maize, Rashad A. Suleiman, Kurt A. Rosentrater, Carl J. Bern Jul 2013

Effects Of Deterioration Parameters On Storage Of Maize, Rashad A. Suleiman, Kurt A. Rosentrater, Carl J. Bern

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Maize (Zea mays L), commonly known as corn in the United States, is the third most important cereal grain worldwide, after wheat and rice. It is a basic staple grain for large groups of people in Africa, Latin America, and Asia. In tropical countries, a large proportion of the maize is harvested and stored under humid and warm climatic conditions, which subsequently results in rapid deterioration of the grains, mainly because of growth of molds and pests. This study reviewed the main factors that lead to deterioration of maize in tropical countries and suggests ways of preventing the identified causes ...


Techno-Economic Modeling Of Coproduct Processing In A Corn Based Ethanol Plant In 2012, Christine Wood, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan Jul 2013

Techno-Economic Modeling Of Coproduct Processing In A Corn Based Ethanol Plant In 2012, Christine Wood, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Coproducts, such as Distillers Dried Grains with Solubles (DDGS), produced during ethanol production are essential to the economic sustainability of each ethanol plant as they provide an additional source of revenue. DDGS is extensively used as animal feed, but has a relatively low market value compared to the biofuel. By fractioning DDGS into lighter and heavier fractions, the overall composition changes potentially increasing the value of the coproducts as they become more desirable to different markets. Earlier studies have examined fractionating DDGS using sieves and aspirators. This project examined the techno-economics of adding fractionation systems onto an existing 40 million ...


Characterizing Manure And Litter Properties And Their Carbon Dioxide Production In An Aviary Laying-Hen Housing System, Yang Zhao, Deling Zhao, Wei Wang, Hongwei Xin Jul 2013

Characterizing Manure And Litter Properties And Their Carbon Dioxide Production In An Aviary Laying-Hen Housing System, Yang Zhao, Deling Zhao, Wei Wang, Hongwei Xin

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Contribution of carbon dioxide (CO2) production from manure or litter can be significant relative to animal metabolic CO2 production in housing systems with less frequent excretion removal. Such CO2 contribution should be accounted for in order to improve the accuracy of estimating building ventilation rate (VR) and animal bioenergetics based on CO2 mass balance. The objective of this study was to investigate the thermal conditions (temperature and relative humidity, or RH), production, moisture content (MC), and CO2 production of laying-hen manure on collection belts and on litter in an aviary house. Hens spent about 15.25 h day-1 in the ...


Concentrations And Size Distributions Of Airborne Particulate Matter And Bacteria In An Experimental Aviary Laying-Hen Housing System, W. Zheng, Yang Zhao, Hongwei Xin, Baoming Li, Richard S. Gates, Y. Zhang, Michelle L. Soupir Jul 2013

Concentrations And Size Distributions Of Airborne Particulate Matter And Bacteria In An Experimental Aviary Laying-Hen Housing System, W. Zheng, Yang Zhao, Hongwei Xin, Baoming Li, Richard S. Gates, Y. Zhang, Michelle L. Soupir

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

High levels of airborne particulate matter (PM) and bacteria may exist in animal housing, which can be detrimental to the health of animals and workers. The sizes of these bioaerosols determine their aerial-transport behaviors and depositions in the respiratory tracts of animals and humans. However, little is known regarding the size distribution of airborne PM and bacteria in livestock houses, especially alternative animal housing systems that aim to enhance animal welfare, such as aviary hen-housing systems. The study reported here was therefore conducted to characterize the concentrations (both in count and in mass) and size distributions of airborne bacteria (in ...


Airborne Particulate Matter And Bacteria Reduction From Spraying Slightly Acidic Electrolyzed Water In An Experimental Aviary Laying-Hen Housing System, W. Zheng, Yang Zhao, Hongwei Xin, Richard S. Gates, Baoming Li, Y. Zhang, Michelle L. Soupir Jul 2013

Airborne Particulate Matter And Bacteria Reduction From Spraying Slightly Acidic Electrolyzed Water In An Experimental Aviary Laying-Hen Housing System, W. Zheng, Yang Zhao, Hongwei Xin, Richard S. Gates, Baoming Li, Y. Zhang, Michelle L. Soupir

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Compared to conventional cage systems for laying hens, aviary housing systems generally have much higher concentrations of airborne dust and bacteria due to generation of bioaerosols by the hens from their litter access. Hence solutions to reduce these health-degrading agents are required to safeguard the indoor environment in such systems. Spraying slightly acidic electrolyzed water (SAEW) has been considered as a novel approach to reducing airborne bacteria and dust levels in hen houses. The objective of this study was to evaluate reduction of airborne bacteria and particulate matter (PM) by spraying SAEW (Trt) in an experimental aviary setting, as compared ...


A County-Level Assessment Of Manure Nutrient Availability Relative To Crop Nutrient Capacity In Iowa: Analysis Of Spatial And Temporal Trends, Daniel S. Andersen Jul 2013

A County-Level Assessment Of Manure Nutrient Availability Relative To Crop Nutrient Capacity In Iowa: Analysis Of Spatial And Temporal Trends, Daniel S. Andersen

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

During the twentieth century, agricultural production strived to achieve increased food production in order to satisfy both local and export demands. In many cases, this led to increased farm sizes and an operational separation of crop and livestock production. Society fears that the trend of increasing centralization and industrialization of agriculture, specifically animal agriculture, has resulted in concentration of waste products associated with their production (manures, wash-down water, process waters, etc.) over relatively small geographic regions that are spatially segregated from crop production areas. Since the distance that manure can be economically hauled for land application has practical limits, this ...


Impact Of Temperature And Mixing On Methane Production Rates Of Swine Manures Obtained From Deep Pit Storages, Ana Paula Da Silva Batista, Mark B. Van Weelden, Daniel S. Andersen Jul 2013

Impact Of Temperature And Mixing On Methane Production Rates Of Swine Manures Obtained From Deep Pit Storages, Ana Paula Da Silva Batista, Mark B. Van Weelden, Daniel S. Andersen

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The appearance of copious amounts of foam on the surface of deep-pit swine manure storages throughout the Midwestern United States is a serious concern for the pork industry. Manure foam has the capacity to trap gases produced by the anaerobic decomposition of the manure, leading to dangerous flammable gas concentrations upon agitation or foam disturbance. One potential cause of foaming is increased methane production from the manure. To this end, personnel at the Agricultural Waste Management Lab at Iowa State University developed a test to evaluate the methane production rate of manure. The goal of this work is to describe ...


Terrain Analysis And Data Mining Techniques Applied To Location Of Classic Gully In A Watershed, Laurimar Gonçalves Vendrusculo, Amy L. Kaleita Jul 2013

Terrain Analysis And Data Mining Techniques Applied To Location Of Classic Gully In A Watershed, Laurimar Gonçalves Vendrusculo, Amy L. Kaleita

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Gullies are an extreme form of soil erosion that degrade diverse environments trough the siltation of streams and water bodies. Indirectly, gully erosion compromises crop productivity working as a link to watercourse allowing movement of detached topsoil particles from agricultural fields during heavy storm events. Furthermore, studies found reduction of the catchment area when active gullies are present. This complex process involves multiple factors and it demands to be studied consistently in order to locate the areas prone for gully erosion. The determination of gullies areas depends upon topographical, geological, and hydrological characteristics; however its location is mainly controlled by ...


Review Of Housing Options For Gestating Sows, Dustin J. Schau, Jeremy D. Brue, Kurt A. Rosentrater Jul 2013

Review Of Housing Options For Gestating Sows, Dustin J. Schau, Jeremy D. Brue, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Housing options for gestating sows is an important topic affecting livestock producers, consumers, and policy makers. Producers seek to provide high quality products at affordable prices while meeting increasing public demands for animal wellbeing. Several studies have been conducted over the years to compare group and individual housing options for gestating sows. The object of this paper was to review these studies and to look specifically at the areas of animal wellbeing and economic impact of housing type. Several types of housing and feed management plans were examined from previous studies and the impact of housing type was explored. Overall ...


Three-Phase Foam Analysis And The Development Of A Lab-Scale Foaming Capacity And Stability Test For Swine Manures, Mark B. Van Weelden, Daniel S. Andersen, Kurt A. Rosentrater, Steven L. Trabue, Brian J. Kerr Jul 2013

Three-Phase Foam Analysis And The Development Of A Lab-Scale Foaming Capacity And Stability Test For Swine Manures, Mark B. Van Weelden, Daniel S. Andersen, Kurt A. Rosentrater, Steven L. Trabue, Brian J. Kerr

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Foam accumulation on the manure slurry at deep pit swine facilities has been linked to flash fire incidents, making it a serious safety concern for pork producers. In order to investigate this phenomenon, samples of swine manure were collected from over 50 swine production facilities in Iowa with varying levels of foam accumulation over a seven month period. These samples were tested for a number of physical and chemical parameters including temperature, pH, total solids, volatile solids, volatile fatty acid concentration, biochemical methane potential, and methane production rate. After establishing these parameters, a foaming capacity and stability test was performed ...


Production Scale Single-Pass Corn Stover Large Square Baling Systems, Keith E. Webster, Matthew J. Darr, Jeffrey C. Askey, Andrew D. Sprangers Jul 2013

Production Scale Single-Pass Corn Stover Large Square Baling Systems, Keith E. Webster, Matthew J. Darr, Jeffrey C. Askey, Andrew D. Sprangers

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

A single-pass combine baler was operated in Central Iowa for the harvest of 2012 in a production scale setting. The combine’s performance was monitored with a telemetry data logger. The combine was able to harvest 2227 bushels (62.4 tons) of grain per hour on average and 18.8 tons of stover per hour on average. A complete quality analysis system was evaluated for the single-pass combine through the harvest of 2012. On board baler scales were tested showing a less than 1% difference in average weight between calibrated platform scales and the baler scales. Also, a microwave moisture ...


Fractionation Of Distillers Dried Grains With Solubles (Ddgs) Through A Destoner, Weitao Zhang, Kurt A. Rosentrater Jul 2013

Fractionation Of Distillers Dried Grains With Solubles (Ddgs) Through A Destoner, Weitao Zhang, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

A destoner fractionation process was used to separate distillers dried grains with solubles (DDGS) into streams with various compositions. Results showed that destoner fractionation was somewhat efficient and effective. Runs with 8° angle and 27.5 percent air flow resulted in the highest value of protein and oil, which the light fraction had 28.15% protein, 10.50% oil, while the heavy fraction had 31.30% protein and 17.20% oil. Particle size distribution had a positive correlation coefficient (0.93) with oil parameters and a negative correlation coefficient (-0.96) with moisture parameters. Fiber had no relationship with particle ...


Effect Of Intermittent Lighting On Production Performance Of Laying-Hen Parent Stocks, He Ma, Baoming Li, Hongwei Xin, Zhengxiang Shi, Yang Zhao Jul 2013

Effect Of Intermittent Lighting On Production Performance Of Laying-Hen Parent Stocks, He Ma, Baoming Li, Hongwei Xin, Zhengxiang Shi, Yang Zhao

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The objective of this observational field study was to investigate the effect of an alternative intermittent lighting program (13L: 5D: 1L: 5D – Trt) vs. standard lighting program (16L: 8D – Ctrl) on production performance of laying-hen parent flocks. Two houses of 15,000 Hy-Line brown parent-stock hens each were used for the comparative study. Hen-day egg production (HDEP), eggs per hen housed (EHH), hen-day hatchable egg production (HDHEP), hatchable eggs per hen housed (HEHH), percentage of crack eggs, feed use, and hen mortality were recorded from 18 to 58 weeks of age. At 35 weeks of age, distributions of ...


Processing Approaches To Improve Functionality And Value Of Soybean Products, Jordan J. Foley, Kurt A. Rosentrater, Buddhi P. Lamsal, Nitya Poovaiah Jul 2013

Processing Approaches To Improve Functionality And Value Of Soybean Products, Jordan J. Foley, Kurt A. Rosentrater, Buddhi P. Lamsal, Nitya Poovaiah

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Soybeans have high concentrations of proteins, amino acids and unsaturated lipids. Various soybean products, such as soybean meal, soy protein concentrate, and soy protein isolate are available and have been studied, due to their abundant nutrient contents. They are acceptable substitutes for meat for vegetarians and vegans, due to their high nutritional value. Soy products have been extensively utilized in the animal feed industry as a protein source as well. Unfortunately, there are challenges associated with soybeans and soy products. Soybeans cannot be consumed without being processed. The main problem is the presence of Anti Nutritional Factors (ANFs), which are ...


Techno-Economic Modeling Of A Degummed Soybean Oil Biorefinery In 2005 & 2012, Bailley A. Richardson, Kurt A. Rosentrater Jul 2013

Techno-Economic Modeling Of A Degummed Soybean Oil Biorefinery In 2005 & 2012, Bailley A. Richardson, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

As the biofuels industry expands, it is important to identify and quantize potential capital, operational, material, and utility costs, as well as possible sales prices for the biofuels and coproducts. Many industries use computer simulation programs for this function, as well as to see how using different operations can affect the overall production at the plant. The objective of this project was to determine how various operation scenarios affected capital, operational, material, and utility costs of a biodiesel biorefinery. These costs were examined using a techno-economic modeling program for a degummed soybean oil plant. It was clear after seeing economic ...