Modelling of energy and carbon budgets of wood fuel coppice systems

Matthews, Robert W.

doi:10.1016/s0961-9534(01)00016-2

Cited by 98 publications

(80 citation statements)

References 16 publications

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“…In this study, the harvested willow is assumed to have a lower energy content as the material is exported from the farm to the power plant directly after harvest, allowing no time for drying. Furthermore, the energy ratios of the willow scenarios in this study are lower than other reported values by Matthews (2001) and Gonz alez-Garc ıa et al (2012b) as they do not consider transport in their analysis.…”

Section: Discussioncontrasting

confidence: 79%

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Energy requirements and environmental impacts associated with the production of short rotation willow (Salix sp.) chip in Ireland

2013

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Willow Salix sp. is currently cultivated as a short rotation forestry crop in Ireland as a source of biomass to contribute to renewable energy goals. The aim of this study is to evaluate the energy requirements and environmental impacts associated with willow (Salix sp.) cultivation, harvest, and transport using life cycle assessment (LCA). In this study, only emissions from the production of the willow chip are included, end-use emissions from combustion are not considered. In this LCA study, three impact categories are considered; acidification potential, eutrophication potential and global warming potential. In addition, the cumulative energy demand and energy ratio of the system are evaluated. The results identify three key processes in the production chain which contribute most to all impact categories considered; maintenance, harvest and transportation of the crop. Sensitivity analysis on the type of fertilizers used, harvesting technologies and transport distances highlights the effects of these management techniques on overall system performance. Replacement of synthetic fertilizer with biosolids results in a reduction in overall energy demand, but raises acidification potential, eutrophication potential and global warming potential. Rod harvesting compares unfavourably in comparison with direct chip harvesting in each of the impact categories considered due to the additional chipping step required. The results show that dedicated truck transport is preferable to tractor-trailer transport in terms of energy demand and environmental impacts. Finally, willow chip production compares favourably with coal provision in terms of energy ratio and global warming potential, while achieving a higher energy ratio than peat provision but also a higher global warming potential.

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Section: Discussioncontrasting

confidence: 79%

“…The range of global warming potential figures in this study (5.84-11.65 kg CO 2 -eq/GJ) are comparable to those reported by Dubuisson & Sintzoff (1998), but are all higher than those of 4.8 kg CO 2 -eq/GJ reported by Matthews (2001) as their analysis assumes lower fertilization rates and includes only transport of 3.2 km to the farm.…”

Section: Discussionsupporting

confidence: 76%

Energy requirements and environmental impacts associated with the production of short rotation willow (Salix sp.) chip in Ireland

2013

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“…Comparing these results with others reported by Dubuisson and Sintzoff (1998), it can be shown that depending on the level of intensification, values regarding CO 2 emissions vary from 101-160 MJ kg -1 of CO 2 . Whereas the results reported by Matthews (2001) showed mean values of 209.8 MJ kg -1 of CO 2 . In the latter study, the calculation of overall energy and carbon budgets required a set of 'standard' assumptions about practices and resultant energy inputs to be made.…”

Section: Discussionmentioning

confidence: 68%

“…These standard assumptions accounted for all activities involved in production and delivery of biofuel within the immediate vicinity of the farm (3.2 km). The carbon emissions coefficient exhibited similar sensitivity to input assumptions (Matthews 2001).…”

Section: Discussionmentioning

confidence: 79%

Biomass production and carbon balance of a short rotation forestry of Populus deltoides (clone Lux) under two different cutting cycles

Cabrera

Tozzini²,

Espinoza

et al. 2016

Bosque (Valdivia)

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“…Burning biomass also avoids anaerobic decomposition that results in CH4 emissions, which are known to have 21 times the greenhouse effects of CO2. Generally power production from biomass is considered carbon neutral, with burning emissions balanced by the carbon capture of the next crop [45,46]. In some instances, with non-invasive farming methods, some researchers even claimed carbon negativity which means that less carbon is emitted than is removed from the atmosphere [47,48].…”

Section: Ghg Emission Caused By Power Generation From Lignocellulosicmentioning

confidence: 99%

The Comparative Life Cycle Assessment of Power Generation from Lignocellulosic Biomass

2015

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Abstract:In order to solve the energy crisis and reduce emissions of greenhouse gases (GHG), renewable energy resources are exploited for power generation. Because lignocellulosic biomass resources are abundant and renewable, various technologies are applied to using lignocellulosic biomass to derive biofuel and electricity. This paper focuses on power generation from lignocellulosic biomass and comparison of the effects of different feedstocks, transportation, and power generation technologies evaluated through life cycle assessment (LCA). The inputs and boundaries of LCA vary with different feedstocks, such as forestry wood, agricultural residues, and fast-growing grass. For agricultural residues and fast-growing grass, the transportation cost from field to power plant is more critical. Three technologies for power generation are analyzed both with and without pelletization of lignocellulosic biomass. The GHG emissions also vary with different feedstocks and depend on burning technologies at different plant scales. The daily criteria pollutant emissions of power generation from different lignocellulosic biomass were evaluated with a life cycle assessment model of GREET.net 2014. It is concluded that bio-power generation is critical with the urgency of greenhouse effects. OPEN ACCESSSustainability 2015, 7 12975

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Modelling of energy and carbon budgets of wood fuel coppice systems

Cited by 98 publications

References 16 publications

Energy requirements and environmental impacts associated with the production of short rotation willow (Salix sp.) chip in Ireland

Energy requirements and environmental impacts associated with the production of short rotation willow (Salix sp.) chip in Ireland

Biomass production and carbon balance of a short rotation forestry of Populus deltoides (clone Lux) under two different cutting cycles

The Comparative Life Cycle Assessment of Power Generation from Lignocellulosic Biomass

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