Ron Sheffield Memorial Student Poster Competition Winners

The Waste to Worth conference hosts a student poster competition – open to graduate and undergraduate students.

2017 – Cary, North Carolina

  • Erin Stevens University of Nebraska-Lincoln
  • Allison Deviney NC State University,
  • Linda Schott, University of Nebraska-Lincoln. 

student poster winnters 2017 waste to worth conference

L to R: Tommy Bass, Erin Stevens, Allison Deviney, Linda Schott

2015 – Seattle

  • First: Laura Kenny, Rutgers University
  • Second: George Neerackal, Washington State University
  • Third: Nicole Schuster, University of Nebraska – Lincoln

student poster winners 2015 waste to worth conference

L to R: George Neerackal, Laura Kenny, Nicole Schuster

2013 – Denver

  • First: Kira Shonkwiler, Colorado State
  • Second: Fei Sun, Washington State
  • Third: Kelsey Bruning, Iowa State

student poster winners 2013 waste to worth conference

L to R: Julianna Sheffield, Kelsey Bruning, Fei Sun, Kira Shonkwiler

Manure Treatment Technology Proceedings for Waste to Worth 2013

W2W13 proceedings | Waste to Worth home
On this page: Anaerobic Digestion | Composting | Separation |
Vegetative | ThermalNutrient Recovery


Composting Thermal Technologies & Biochar

In Vessel Composting of Horse Manure (Case Study)

Financial Benefits of Composting Stable Waste

Effect of Fractionation and Pyrolysis on Fuel Properties of Poultry Litter

Developing Alternative Markets for Poultry Litter Biochar

The Farm Manure to Energy Initiative

Solid-Liquid Separation Nutrient Recovery

Solid-Liquid Separation Alternatives for Manure

Benefits of Liquid-Solid Separation with Lagoons

Recovery of Phosphorus from Solid Manure
Vegetative Treatment Systems (VTS)  

Automating Management for a VTS


 Anaerobic Digestion

Cattle Manure/Solid Manure Feedstocks

Anaerobic Digestion of Finishing Cattle Manure

Trickle Flow Leach Bed Reaction for Solid Cattle Waste

Pilot Scale Leach-bed Multistage Digester for Dry-lot Wastes

Dry Anaerobic Digestion (AD) for High Solids Manure

Feasibility at Cattle Operations and Demonstrations of a Decision Support Tool

Valuing Feedstocks–Balancing Energy Potential & Nutrient Content

Improving Methane from Manure Solids through Pretreatment

Co-Digestion and Operational Issues

Dairy Manure Digestion Influenced by Wasted Milk

Systems Nutrient Recovery

Design, Construction, and Implementation of a Pilot Scale Digester

Coupling Dairy Manure Digesters with Commercial Greenhouses

On-Site Analytical Laboratories to Monitor Process Stability

Operation of Internal Combustion Engines

Economical Recovery of Ammonia from Digestate
Pathogens Uses for Solids

Inactivation of Dairy Manure-borne Pathogens

Organic Mulches in Ginseng Production



Nutrient Management Proceedings Waste to Worth 2013

W2W13 proceedings | Waste to Worth home



Farm Nutrient Management

Decision Support Tools Farming Systems

Protecting Puget Sound Using Manure Application Risk Management

Predicting Nutrient Application using CAFOweb

Watershed Nitrogen Reduction Planning Tool

Environmental Footprints of Beef At the Meat Animal Research Center

The Discovery Farms: Helping Farmers Take Control of Water Quality

Adopting Positive Practices  

Nutrient Management Standards–Making Them Work Where We Work

Adoption Trends of Nutrient Related Practices (Canada)

Phosphorus Declining in the Illinois River: Why?

How Do Environmental Strategies Fit Into Risk Management

Will Spreading Bans Reduce Manure Runoff Events?

Using Soil Moisture to Predict Runoff on Non-Frozen Ground

What Practices Reduce Runoff on Slopes Greater than 30%

Silage Pile Leachate

Silage Runoff Characterization

Treatment of Silage Runoff with Vegetated Filter Strip

Tile Drainage

Tile Drainage  

Tile Drainage Field Day to Promote Manure Management

Swine Manure Timing on Subsurface Drainage

Use of Filters in Drainage Control Structures

New Technologies for Drainage Water and Subsurface Irrigation

Drainage Depth and Intensity on Nutrient Loss in the Northern Corn-Belt

Grazing animals

Managing Creek Pastures for Improved Water Quality

Feeding Cattle Without the Feedlot

Balancing Earth, Air and Fire in the Kansas Flint Hills



Designing Structures to Remove Phosphorus from Drainage

Phosphorus Index and Applied Tools

Wisconsin Producer Perspective on the Phosphorus Index

Using Excess Manure to Generate Income in the Chesapeake

Global Supply of Phosphate

EPA Perspective on Nutrient Pollution

Modeling of Phosphorus Movement

By Species

Beef Horse

Environmental Footprints of Beef At the Meat Animal Research Center

Feeding Cattle Without the Feedlot

Efficient Utilization of Equine Manure


Pig Poultry

Influence of Swine Manure on Methanogens and Denitrifiers in Soils

Swine Manure Timing on Subsurface Drainage

What Happens When You Mix Chitosan and Poultry Litter?

Case Study: Poultry Lagoon Closure in Texas


Waste to Worth 2013-Education & Outreach

Making Sense of Smells–Communicating Odors to Diverse Audiences-Doug Hamilton

Anaerobic Digester Workforce Training Curriculum Development-Jennifer Pronto

Anaerobic Digester Operator Discussion Group Management-Kathryn Barrett

Iowa Manure Management Action Group (IMMAG)-Angela Rieck-Hinz

Water Quality Initiatives for Small Iowa Beef and Dairy Feedlot Operations (Small Feedlot PRoject)-Shawn Shouse

Online Bioenergy Training for Extension Educators CHARLES GOULD

Feed Management Planners Certification Program to Reduce Nutrient Loads in Impaired Watersheds DAN LUDWIG

Extension Outreach Response to Livestock Mortality Events Associated with Algal Toxin Production in Georgia Farm Ponds-Susan Wilde

The Farm Manure to Energy Initiative: Using Excess Manure to Generate Farm Income in the Chesapeake’s Phosphorus Hotspots-Jane Corson-Lassiter

Tile Drainage Field Day to Promote Manure Management-Natalie Rector

Smartphone Apps for Manure Management-Jill Heemstra

Air Quality Waste to Worth 2013 Proceedings

W2W13 proceedings | Waste to Worth home
On this page: Ammonia | Anaerobic Digestion | Partnerships | Dust | Greenhouse Gases | Monoslope Barns

Ammonia (NH3)

Rocky Mountain National Park Emissions & Measurement

Ammonia: A Volatile, Promiscuous Fugitive

Nitrogen Isotopes to Distinguish Ammonia Sources

Activation Energy of Urea Hydrolysis and Ammonia Henry Constant Effects

Comparing Dairy Manure Application on Ammonia, Odor, and Costs

Estimating Ammonia Using Low-Cost, Time-Averaged Concentration

Mitigation & Management Nutrient Recovery

Feedlot Ammonia BMPs: Barriers and Opportunities

Management to Reduce Nitrogen Losses from Feedlots

Acid Scrubber for Reducing Ammonia

Ammonia Mitigation Using Electrolyzed Water Spray Scrubber

Ammonia Mitigation and Capture Using Gas-Permeable Membrane

Anaerobic Digestion

Potential Air Quality Impacts of Digestion of Dairy Manure

Dust, Particulate Matter (PM)

Management & Mitigation Emissions & Measurement
Stocking Density Manipulation at Cattle Feedyards

Photometric Prediction of Ground-level PM10

Dissipation of Fine Particulates Downwind of Poultry

PM Adjacent to Deep-Bedded Monoslope Facilites

Partnerships Between Industry and Agencies

Affecting Change Through Collaboration: An Industry Driven Apporach (Colorado regulators, livestock associations, farmers)

Yakima, WA Partnership Model to Address Air Emissions from Dairy

Greenhouse Gases (GHG)

Emissions & Measurement Management & Mitigation

GHG Nitrogen Gas Losses Comparing Bulking Agents for Composting Separated Hog Solids

Ammonia and GHG Surface Measurements from Beef Bedded Manure Packs

Reducing Gas Emissions from Manure Application in Semi-Arid Regions

Monoslope Beef Barns

Particulate Matter Adjacent to Cattle Deep-Bedded Monoslope Facilites

Ammonia and Greenhouse Gas Surface Measurements from Beef Bedded Manure Packs

Manure Management and Temperature Impacts on Gas Concentrations in Monoslope Cattle Facilites



Waste to Worth 2013-Feed Management

W2W13 proceedings | Waste to Worth home
On this page: Dairy Cattle | Feeding and Rations | Beef Feedlot

Dairy Cattle Feeding & Rations Beef Feedlot

Sustainable Dairy Cropping Systems

Dairy Cow Ration Impacts Manure Chemistry and the Environment

Feed Management Planners Certification Program

Integrating Manure into Feed Ration Optimization

Distiller’s Grains Effects on Sulfur Emissions

BFNMP: A Tool for Feedlot Manure Economics


Waste to Worth 2013-Manure Value & Economics

W2W13 proceedings | Waste to Worth home
On this page: Environmental Planning | Value as Fertilizer | Feeding & Rations | Manure to Energy

Environmental Planning Value as Fertilizer

Modeling to Characterize Manure Flows in Texas

Evaluating the Environmental Impact of Dairy and Beef

Sustainable Dairy Cropping Systems

Financial Benefits of Composting Stable Waste

Factors Affecting the Price of Manure Applied on Corn

Economic Analysis of Swine Diet Cost Versus Manure Value

Feeding & Rations Manure to Energy

Economic Analysis of Swine Diet Cost Vs. Manure Value

BFNMP: A Tool for Feedlot Manure Economics

Integrating Manure into Feed Ration Optimization

Production of Fuel Crops For Biodiesel Using Manure

Using Litter for On-Farm Space Heating vs. Electricity

Waste-to-Energy Technology and Environmental Revenues


Making Sense of Smells – Communicating Odors to Diverse Audiences

Waste to Worth: Spreading science and solutions logoWaste to Worth home | More proceedings….

Example of odor visualization system using colors and shapes to replace chemical jargon.

Why Is Smell and Odor Important to Animal Agriculture?

Smell is perhaps the least understood of our five senses.  Yet, the human perception of odor may mean the difference between war and peace for a livestock farmer and his neighbors.  Because the science of  smells is complex, there is a tendency to run straight for the organic chemistry book when we try to describe farmstead odors.  This approach goes right over the heads of most people.  There must be a better way to communicate odors to diverse audiences.  This workshop can be utilized by teachers or extension staff to teach about communication of a topic that is frequently encountered by farmers, ag professionals, and others. To see the presentation slides, scroll to the bottom of the page.

Learning Objectives

This two hour workshop will explain how to use an innovative visual technique to describe farmstead odors to general audiences without resorting to chemical jargon.  The visualization technique based on shapes and colors was developed at Oklahoma State University in the mid 1990s, and has been used to talk about odors with many diverse audiences.  The method demonstrates that odors have “structure”, and can be measured using the four concepts: character, concentration, intensity, and persistence.

Students will also participate in a mock laboratory exercise to demonstrate how odor intensity and pleasantness are measured.  Results of the exercise will be analyzed in “real time”.  Further analyses of previous exercise runs will be compared and contrasted to the workshop results.  This laboratory has been presented to over 250 college freshmen and their results are presented in this recording.

Workshop Introduction

What is an Odor?

Measuring Odors

Odor Experiment

Another Odor Experiment

Physiology of Smell


Douglas W. Hamilton, Associate Professor and Extension Waste Management Specialist, Oklahoma Cooperative Extension Service

Doug Hamilton is an associate professor of Biosystems and Agricultural Engineering at Oklahoma State University.  He has three degrees in Agricultural Engineering from the University of Arkansas, Iowa State University, and Penn State University.  His sense of smell remains keen despite the fact he has worked with livestock manure for nearly 34 years.

For More Information


The authors are solely responsible for the content of these proceedings. The technical information does not necessarily reflect the official position of the sponsoring agencies or institutions represented by planning committee members, and inclusion and distribution herein does not constitute an endorsement of views expressed by the same. Printed materials included herein are not refereed publications. Citations should appear as follows. EXAMPLE: Authors. 2013. Title of presentation. Waste to Worth: Spreading Science and Solutions. Denver, CO. April 1-5, 2013. URL of this page. Accessed on: today’s date.