M17 Produktion af energiafgrøder (Q1) ( efterår 2010 - 5 ECTS )
Rammer for udbud
-
Uddannelsessprog:
engelsk
-
Niveau:
Graduate course. Optional.
-
Semester/kvarter:
Autumn term, 1st quarter
-
Timer per uge:
3 hour lectures and 3 hours of exercises per week.
-
Deltagerbegrænsning:
None
-
Undervisningssted:
Århus
-
Hovedområde:
Det Naturvidenskabelige Fakultet
-
Udbud ID:
24660
Formål
The production of biomass for energy purposes is expected to accelerate in the future. In a number of areas energy crops differ from traditional agricultural crops, and the different conversion technologies used will have different requirements to the chemical composition of the biomass.
The aim of the course is to equip the student with the interdisciplinary skills required to be able to list the advantages and disadvantages of specific crops for energy production and to account for the impact of energy crop production on the environment, climate and landscape.
Indhold
The course will focus on the principal differences between cropping system and crop types with respect to:
-
annual versus perennial crops
-
crops with C3 or C4 photosynthesis
-
choice of crop in relation to soil type and climate conditions
-
cultivation, harvest and plant protection of specific crops such as rapeseed, cereals, grass, turnips, hemp, willow, miscanthus, sorrel, reed canary grass, etc.
-
biomass quality including content of sugars, starch, inulin, cellulose, lignin, oil and protein
-
important crop qualities for storage, fermentation, combustion and oil extraction. nutrient cycles and losses
-
energy balance of the production system
-
emission of greenhouse gases and the effect on soil carbon balance
-
landscape effects
-
production economy - crop calculations.
Faglige forudsætninger
None
Underviser
Poul Erik Lærke (course responsible), E-mail
PoulE.Laerke@agrsci.dk
, Uffe Jørgensen, Erik Fløjgaard Kristensen, Jens Bonderup Kjeldsen, Tommy Dalgaard
Undervisnings- og arbejdsform
The first part of the course will be based on lectures, theoretical exercises and excursions. Project-based work will be conducted in groups.
English
Litteratur
Brown, R.C. Biorenewable resources. Engineering new products from agriculture. Iowa State Press, Iowa, USA.
This will be supplemented with reviewed articles.
Udbyder
Aarhus School of Engineering
Læringsmål
On completion of the course the student should be able to:
-
describe typical energy crops that grow in temperate areas
-
evaluate the suitability of a given crop for biomass production in relation to:
-
place of production
-
plant nutrition and protection
-
energy content and quality
-
technology needed for its establishment, harvest and pretreatment (if any)
-
nutrient losses (N, P)
-
net emission of the most important greenhouse gases (GHGs), CH
4
, N
2
O, CO
2,
including soil carbon storage
-
define the suitability of the crop for storage, fermentation, combustion and oil extraction for the conversion technology to be used
-
calculate the energy content of specific crops on the basis of information on dry matter and ash content and the content of carbohydrates, lignin, oil and protein
-
calculate the energy balance of a bioenergy production system
-
explain the principal differences in the use of annual and perennial energy crops
-
calculate net emission of GHGs in a bioenergy production system
-
construct simple farm management calculations for a specific crop under given growing conditions
-
explain the importance of energy crops for nature and landscape values
Bedømmelse
One written report has to be approved prior to exam. Exam is a project report 8-12 pages and oral examination for 20 min. without means of aid. The report and oral exam counts equal.
Internal examiner, the Danish 7-point grade scale.
