Global warming potential of wheat production in Western Australia: a life cycle assessment

Biswas, Wahidul K.; Barton, Louise; Carter, Daniel

doi:10.1111/j.1747-6593.2008.00127.x

Cited by 109 publications

(72 citation statements)

References 14 publications

(25 reference statements)

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“…For example, national adopted EFs have been used in LCA studies of feed and crop production (e.g. Biswas et al, 2008;van der Middelaar et al, 2013) and of milk products (e.g. Flysjö et al, 2011).…”

Section: Nitrous Oxidementioning

confidence: 99%

An LCA researcher's wish list – data and emission models needed to improve LCA studies of animal production

Cederberg

Henriksson

Berglund

2013

Animal

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The last decade has seen an increase in environmental systems analysis of livestock production, resulting in a significant number of studies with a holistic approach often based on life-cycle assessment (LCA) methodology. The growing public interest in global warming has added to this development; guidelines for carbon footprint (CF) accounting have been developed, including for greenhouse gas (GHG) accounting of animal products. Here we give an overview of methods for estimating GHG emissions, with emphasis on nitrous oxide, methane and carbon from land use change, presently used in LCA/CF studies of animal products. We discuss where methods and data availability for GHGs and nitrogen (N) compounds most urgently need to be improved in order to produce more accurate environmental assessments of livestock production. We conclude that the top priority is to improve models for N fluxes and emissions from soils and to implement soil carbon change models in LCA/CF studies of animal products. We also point at the need for more farm data and studies measuring emissions from soils, manure and livestock in developing countries.

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Section: Nitrous Oxidementioning

confidence: 99%

An LCA researcher's wish list – data and emission models needed to improve LCA studies of animal production

Cederberg

Henriksson

Berglund

2013

Animal

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“…Entretanto, a lignina não é facilmente hidrolisada para ser utilizada na produção de etanol [19]. Vários estudos têm sido realizados para a avaliação do desempenho ambiental na produção de etanol celulósico, por exemplo, de eucalipto [20], trigo [21], palha [22], grama [23], entre outros.…”

Section: Introductionunclassified

Análise do ciclo de vida aplicada à produção de bioetanol a partir de material Lignocelulósico remanescente em dejeto bovino

Azevedo¹,

Schneider

Souza

et al. 2016

Tecno-log.

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____________________________________________________________________________________________________________ RESUMOBiocombustíveis podem ter uma contribuição significativa na redução de danos ambientais dependendo da sua rota de produção. A produção de bioetanol, ou etanol lignocelulósico, pode ser uma alternativa frente aos combustíveis fósseis e de grande relevância estratégica para o Brasil. Neste contexto, estudamos a análise do ciclo de vida (ACV) da produção de etanol a partir do material lignocelulósico contido no dejeto bovino. Esses dejetos são formados por uma biomassa rica em celulose, que pode ser convertida em glicose e em outros açúcares fermentáveis e, então, ao bioetanol. Para tanto, consideramos como Unidade Funcional o processamento de 1.000 kg de dejeto. Para a análise dos impactos aplicamos o método Ecoindicator 99, através das bibliotecas EcoInvent, do software SimaPro versão 7.3.2. Foram consideradas as seguintes categorias de impacto: cancerígenos, orgânicos e inorgânicos inaláveis, mudanças climáticas, radiação, camada de ozônio, ecotoxicidade, acidificação/eutrofização, uso do solo, minerais e combustíveis fósseis. Para a avaliação de danos ambientais, essas categorias foram agrupadas em três categorias de danos: danos à saúde humana, danos aos ecossistemas e danos aos recursos naturais. De acordo com o estudo realizado, verificamos que o insumo do processo que mais contribuiu na ACV foi o consumo de energia, resultando em maior impacto ambiental na categoria "cancerígenos", agrupada na categoria de "danos à saúde humana". A partir dos resultados, foi possível minimizar os impactos propondo modificações no processo, principalmente nos sistemas de aquecimento que poderão ser utilizados.Palavras-chave: Dejeto bovino. Bioetanol. ACV. ____________________________________________________________________________________________________________

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“…When carbon sequestration by grassland was considered, pasture systems reduced net GHG emissions. The type of feed used in pasture and confinement systems has potential implications on both EM and total GHG emissions (Biswas et al, 2008;Arseneault et al, 2009;Belflower et al, 2012). This suggests the need for more system-level evaluations of GHG emission per kg milk to fully realize the source of a system's GHG impact and provide solutions for mitigating their emission.…”

Section: Introductionmentioning

confidence: 99%

Implications of dairy systems on enteric methane and postulated effects on total greenhouse gas emission

Fredeen

Juurlink²,

Main

et al. 2013

Animal

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The effects of feeding total mixed ration (TMR) or pasture forage from a perennial sward under a management intensive grazing (MIG) regimen on grain intake and enteric methane (EM) emission were measured using chambers. Chamber measurement of EM was compared with that of SF 6 employed both within chamber and when cows grazed in the field. The impacts of the diet on farm gate greenhouse gas (GHG) emission were also postulated using the results of existing life cycle assessments. Emission of EM was measured in gas collection chambers in Spring and Fall. In Spring, pasture forage fiber quality was higher than that of the silage used in the TMR (47.5% v. 56.3% NDF; 24.3% v. 37.9% ADF). Higher forage quality from MIG subsequently resulted in 25% less grain use relative to TMR (0.24 v. 0.32 kg dry matter/kg milk) for MIG compared with TMR. The Fall forage fiber quality was still better, but the higher quality of MIG pasture was not as pronounced as that in Spring. Neither yield of fat-corrected milk (FCM) which averaged 28.3 kg/day, nor EM emission which averaged 18.9 g/kg dry matter intake (DMI) were significantly affected by diet in Spring. However, in the Fall, FCM from MIG (21.3 kg/day) was significantly lower than that from TMR (23.4 kg/day). Despite the differences in FCM yield, in terms of EM emission that averaged 21.9 g/kg DMI was not significantly different between the diets. In this study, grain requirement, but not EM, was a distinguishing feature of pasture and confinement systems. Considering the increased predicted GHG emissions arising from the production and use of grain needed to boost milk yield in confinement systems, EM intensity alone is a poor predictor of the potential impact of a dairy system on climate forcing.

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Global warming potential of wheat production in Western Australia: a life cycle assessment

Cited by 109 publications

References 14 publications

An LCA researcher's wish list – data and emission models needed to improve LCA studies of animal production

An LCA researcher's wish list – data and emission models needed to improve LCA studies of animal production

Análise do ciclo de vida aplicada à produção de bioetanol a partir de material Lignocelulósico remanescente em dejeto bovino

Implications of dairy systems on enteric methane and postulated effects on total greenhouse gas emission

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