Enhancement of Biogas Production from Laying Hen Manure via Sonolysis as Pretreatment

Pretreatment of Straw Fraction of Manure for Improved Biogas Production

Pretreatment of straw separated from cattle and horse manure using Nmethylmorpholine oxide (NMMO) was investigated. The pretreatment conditions were for 5 h and 15 h at 120 °C, and the effects were evaluated by batch digestion assays. Untreated cattle and horse manure, both mixed with straw, resulted in 0.250 and 0.279 Nm CH4/kgVS (volatile solids), respectively. Pretreatment with NMMO improved...

Ammonia Emissions Rate from Composted Laying Hen Manure

During the past five years we have developed three emission calorimeters (EC) that can be used to evaluate mass generation and utilization of gasses. We have tested various treatments that significantly reduced ammonia generation by laying hen manure (Harrison and Koelkebeck, 2002; 2003). Disciplines Agriculture | Bioresource and Agricultural Engineering | Poultry or Avian Science Comments Post...

Comparison between Biogas Production from Manure of Laying Heners and Broilers

Exploitation of fossil fuels such as lignite, brown coal, crude oil and natural gas comes from the oxidation of carbon stored over millions of years in the Earth’s crust; the combustible energy when released in the atmosphere emits carbon dioxide (CO2). Increased concentration of CO2 in the atmosphere causes global warming, because it is a greenhouse gas. Fossil fuels are limited and concentrat...

Effects of Laying Hen Manure Application Rate on Water Quality

Excessive use of animal manure on agricultural lands can impact the quality of surface and groundwater resources. A three–year study (1998–2000) was conducted on nine 0.4–ha plots and on six 2.1–m 2 lysimeters to investigate the effect of two nitrogen (N) application rates from laying hen manure and one N application rate from urea ammonium nitrate (UAN) fertilizer on surface and groundwater qu...

Pretreatment of feedstock for enhanced biogas production