Abstract
This paper presents the results of simplified life cycle assessments (LCA) of the cultivation of a variety of crops suitable for biogas production. The simplification refers to that only greenhouse gases and the cumulated energy requirements (CER) are regarded. The values for the greenhouse gas emissions expressed as CO{sub 2} equivalents are around 130 g CO{sub 2}eq.kg{sup -1} ODM with lowest value of 75.5 g CO{sub 2}eq.kg{sup -1} ODM for hemp (Cannabis sativa) and the highest value of 170 g CO{sub 2}eq.kg{sup -1} ODM for rape (Brassica napus). Considering electric power as final product and referring therefore on kWh as unit the differences become even greater, mainly because of the different methane production potentials. On this basis the lowest value amounts to 84 g CO{sub 2}eq.kWh{sup -1} for alfalfa (Medicago sativa) and the highest value amounts to 438 g CO{sub 2}eq.kWh{sup -1} for rape. This general trend that the LCA identifies hemp, forage grass (Dactylis, Lolium and Festuca species), alfalfa, and maize (Zea mays) to have a low ecologic input and rape to have a high ecologic input is confirmed regarding the CER. The CER values are lowest with 0.82 MJ.kWh{sup -1} for maize and forage grass and highest with
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Ploechl, M;
Heiermann, M
[1]
- Abt. Technikbewertung und Stoffkreislauefe, Inst. fuer Agrartechnik Bomim, Potsdam (Germany)
Citation Formats
Ploechl, M, and Heiermann, M.
Ecological assessment of agricultural co-substrates for biogas production; Oekologische Bewertung der Bereitstellung landwirtschaftlicher Kosubstrate zur Biogaserzeugung.
Germany: N. p.,
2002.
Web.
Ploechl, M, & Heiermann, M.
Ecological assessment of agricultural co-substrates for biogas production; Oekologische Bewertung der Bereitstellung landwirtschaftlicher Kosubstrate zur Biogaserzeugung.
Germany.
Ploechl, M, and Heiermann, M.
2002.
"Ecological assessment of agricultural co-substrates for biogas production; Oekologische Bewertung der Bereitstellung landwirtschaftlicher Kosubstrate zur Biogaserzeugung."
Germany.
@misc{etde_20381624,
title = {Ecological assessment of agricultural co-substrates for biogas production; Oekologische Bewertung der Bereitstellung landwirtschaftlicher Kosubstrate zur Biogaserzeugung}
author = {Ploechl, M, and Heiermann, M}
abstractNote = {This paper presents the results of simplified life cycle assessments (LCA) of the cultivation of a variety of crops suitable for biogas production. The simplification refers to that only greenhouse gases and the cumulated energy requirements (CER) are regarded. The values for the greenhouse gas emissions expressed as CO{sub 2} equivalents are around 130 g CO{sub 2}eq.kg{sup -1} ODM with lowest value of 75.5 g CO{sub 2}eq.kg{sup -1} ODM for hemp (Cannabis sativa) and the highest value of 170 g CO{sub 2}eq.kg{sup -1} ODM for rape (Brassica napus). Considering electric power as final product and referring therefore on kWh as unit the differences become even greater, mainly because of the different methane production potentials. On this basis the lowest value amounts to 84 g CO{sub 2}eq.kWh{sup -1} for alfalfa (Medicago sativa) and the highest value amounts to 438 g CO{sub 2}eq.kWh{sup -1} for rape. This general trend that the LCA identifies hemp, forage grass (Dactylis, Lolium and Festuca species), alfalfa, and maize (Zea mays) to have a low ecologic input and rape to have a high ecologic input is confirmed regarding the CER. The CER values are lowest with 0.82 MJ.kWh{sup -1} for maize and forage grass and highest with 3.47 MJ.kWh{sup -1} for rape. (orig.)}
place = {Germany}
year = {2002}
month = {Jul}
}
title = {Ecological assessment of agricultural co-substrates for biogas production; Oekologische Bewertung der Bereitstellung landwirtschaftlicher Kosubstrate zur Biogaserzeugung}
author = {Ploechl, M, and Heiermann, M}
abstractNote = {This paper presents the results of simplified life cycle assessments (LCA) of the cultivation of a variety of crops suitable for biogas production. The simplification refers to that only greenhouse gases and the cumulated energy requirements (CER) are regarded. The values for the greenhouse gas emissions expressed as CO{sub 2} equivalents are around 130 g CO{sub 2}eq.kg{sup -1} ODM with lowest value of 75.5 g CO{sub 2}eq.kg{sup -1} ODM for hemp (Cannabis sativa) and the highest value of 170 g CO{sub 2}eq.kg{sup -1} ODM for rape (Brassica napus). Considering electric power as final product and referring therefore on kWh as unit the differences become even greater, mainly because of the different methane production potentials. On this basis the lowest value amounts to 84 g CO{sub 2}eq.kWh{sup -1} for alfalfa (Medicago sativa) and the highest value amounts to 438 g CO{sub 2}eq.kWh{sup -1} for rape. This general trend that the LCA identifies hemp, forage grass (Dactylis, Lolium and Festuca species), alfalfa, and maize (Zea mays) to have a low ecologic input and rape to have a high ecologic input is confirmed regarding the CER. The CER values are lowest with 0.82 MJ.kWh{sup -1} for maize and forage grass and highest with 3.47 MJ.kWh{sup -1} for rape. (orig.)}
place = {Germany}
year = {2002}
month = {Jul}
}