ZOOTECHNICAL LIQUID WASTE IMPACT IN THE AGRICULTURAL ENVIRONMENT
Verification tests of learning in progress. For those who do not pass all the tests during the course, the exam will consist of an oral test on the whole program.
Fundamental knowledge of potential impact of unmanaged livestock waste on the soil and water environment. Knowledge of waste characterization relative to environmental quality impacts to prevent soil, water and air contamination.
Factors affecting the agronomic use of livestock wastes: Physico-chemical characteristics of the soil. Treatments carried out. Period of application and efficiency of use. Nitrogen in the soil: Nitrogen cycle. Reactions of nitrogen in soil. Nitrification. Denitrification. Immobilization. Mineralization. Nitrate pollution. Problem of nitrates. Eutrophication. Increase nutrient availability. Dissolved oxygen consumption. Indicators of eutrophication. Impact of livestock on greenhouse gases. Components of the atmosphere. CO2, CH4, N2O emissions. Total gaseous emissions from animal husbandry. Impact of odours from livestock farms: Olfactory pollution. Odour sources. Causes the emission of odours on farms. Main classes of odorous compounds. Concentration and odour threshold of perception. Techniques for measuring odours. Biogas and composting: Biomass waste from livestock. The different types of biological treatment. Biogas and anaerobic digestion. Composting and aerobic digestion.
Miner, J. R.; Humenik, F. J.; Overcash, M. R.: Managing livestock wastes to preserve environmental quality. ISBN 0-8138-2635-7
Lectures
and
Tutorials:
Determination of organic matter of a livestock manure. Determination of organic matter in soil amended and not with manure
Technical visit to farm biogas plant is organised.
ECTS: 6
Course hours: 48 (Lectures: 38 h; laboratory: 10 h )
Semester: 2nd
Lecturer: Alba Pusino
Contacts: pusino@uniss.it,: tel.: 079229219
Reception: daily, by prior e-mail appointment.