- Determination of thermal properties of composting bulking materialsH K Ahn
Environmental Management and Byproduct Utilization Laboratory, USDA ARS, BARC East, Beltsville, MD 20705, United States
Bioresour Technol 100:3974-81. 2009..95-0.99) and thermal conductivity (r=0.84-0.99) well. Improved knowledge of the thermal properties of compost bulking materials can contribute to improved thermodynamic modeling and heat management of composting processes...
- Evaluation of biogas production potential by dry anaerobic digestion of switchgrass--animal manure mixturesH K Ahn
Environmental Management and Byproduct Utilization Laboratory, USDA ARS, Bldg 306, BARC East, Beltsville, MD 20705, USA
Appl Biochem Biotechnol 160:965-75. 2010..Although dairy and poultry manure performed poorly, they may still have high potential as biomass for dry anaerobic digestion if appropriate designs are developed to prevent significant volatile fatty acid (VFA) accumulation and pH drop...
- Pile mixing increases greenhouse gas emissions during composting of dairy manureH K Ahn
Environmental Management and Byproduct Utilization Laboratory, USDA ARS, Beltsville, MD 20705, USA
Bioresour Technol 102:2904-9. 2011..for each kg of degraded volatile solids (VS), respectively. Our results suggest that to minimize GHG emissions, farmers should store manure in undisturbed piles or delay the first mixing of compost piles for approximately 4 weeks...