Animal Slurry Sanitization through pH Adjustment: Process Optimization and Impact on Slurry Characteristics

Effectiveness of Thermal Sanitization of Piggery Slurry Using Heat Exchangers

Livestock agriculture dominated by pig rearing is responsible for the production large volumes of wastes. Across the European Union there are over 151 million pigs that produce 300 million tonnes of slurry annually. Furthermore, intensive production linked to certain regions, leads to zones of nutrient excess where available land for land spreading is insufficient. However, even if the environm...

Commercial scale slurry bubble column reactor optimization

An in-depth numerical study has been carried out to investigate a high-pressure commercial scale (2–8 meter diameter) slurry bubble column reactor (SBCR). Typical superficial gas velocities are in the range of 0.5–3 m/s, and overall vapor hold-ups are in the range of 0.45–0.85. The study revealed that steady compartmental reaction models do not match plant data when reaction time constants are ...

Greenhouse Gas and Ammonia Emissions from Slurry Storage: Impacts of Temperature and Potential Mitigation through Covering (Pig Slurry) or Acidification (Cattle Slurry).

Storage of livestock slurries is a significant source of methane (CH) and ammonia (NH) emissions to the atmosphere, for which accurate quantification and potential mitigation methods are required. Methane and NH emissions were measured from pilot-scale cattle slurry (CS) and pig slurry (PS) stores under cool, temperate, and warm conditions (approximately 8, 11, and 17°C, respectively) and inclu...

Characteristics of Animal Slurry as a Key Biomass for Biogas Production in Denmark

Chromic Oxide Slurry

CP titanium was polished with a colloidal sitica suspension and chromic ox{de slurry under low and high pressures. The polisheti surfaces wer'e characterized by means of EI]MA and XPS. Irrespeetive of polishing pressure, colloidal silica suspension suecessfully created a mirror-Iike surface that was clean at EPMA level, However, XPS detected a small amount of silicon on the outermost surface. O...