Cutting energy characteristics of Miscanthus x giganteus stems with varying oblique angle and cutting speed

Johnson, Phillip; Clementson, Clairmont L.; Mathanker, Sunil K.; Grift, Tony E.; Hansen, Alan C.

doi:10.1016/j.biosystemseng.2012.02.003

Cited by 75 publications

(50 citation statements)

References 21 publications

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“…Morphological and mechanical properties, composition of feedstock at harvesting affect not only dry matter yield, but also the state of feedstock for subsequent conversion process and influence total energy efficiency (Kaack, Schwarz, 2001;Kaack et al, 2003;Mani et al, 2006;Igathinathane et al, 2008). Johnson et al (2012) indicated that M. × gigantheus cutting process needs to be investigated in detail, which would help in developing more efficient harvesting and biomass particle size reduction equipment required for the introduction of M. × gigantheus as a bioenergy crop. Due to biomass processing technology imperfections, not all biomass is consumed, therefore in order to make the best use, it is necessary to look for ways to improve biomass feedstock preparation for processing (Robbins et al, 2012).…”

Section: Miscanthus Biomass Quality Composition and Methods Of Feedstmentioning

confidence: 99%

Miscanthus biomass quality composition and methods of feedstock preparation for conversion into synthetic diesel fuel

Kadžiulienė

Jasinskas

Zinkevičius

et al. 2014

Zemdirbyste-Agriculture

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When developing various technologies designed for biomass conversion into biofuels, it is important to establish the suitability of raw material of lignocellulotic, non-food plants such as Miscanthus, whose biomass has a good energy potential. Biomass productivity, quality and its suitability for processing under more northern climatic conditions are important factors to be considered. Experiments were aimed to estimate quality and technological parameters of Miscanthus growing, harvesting and processing into synthetic diesel, to evaluate chemical, physical and mechanical properties of biomass and to determine energy consumption necessary for biomass preparation for conversion into synthetic diesel. The study object was biomass of Miscanthus (Miscanthus × giganteus Greef et Deu) produced under Lithuanian and German climate conditions. Miscanthus harvested in the autumn produced up to 9.42 t ha -1 dry matter (DM) yield, which was significantly higher in the treatments fertilised with a higher nitrogen rate. The content of cellulose (413-456 g kg -1 DM) and hemicellulose (204-236 g kg -1 DM) was very similar at all fertilisation levels. The highest content of lignin (117 g kg -1 DM) was established in the treatments fertilised with 120 kg ha -1 N. The spring-harvested Miscanthus biomass had significantly lower moisture content and the yield was significantly lower, too. While preparing the biomass as feedstock for synthetic diesel the greatest reduction in moisture content (to 8.59 ± 1.38%) occurred when Miscanthus biomass was chopped, pre-dried and milled, and particles larger than 2 mm accounted for the largest share. The energy use for chopping of autumn-harvested biomass was lower and chopping efficiency was higher compared with the spring-harvested biomass. The composition of major components of synthetic fuel from Miscanthus biomass was very similar to that of mineral diesel.

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Section: Miscanthus Biomass Quality Composition and Methods Of Feedstmentioning

confidence: 99%

Miscanthus biomass quality composition and methods of feedstock preparation for conversion into synthetic diesel fuel

Kadžiulienė

Jasinskas

Zinkevičius

et al. 2014

Zemdirbyste-Agriculture

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“…High yield and low cutting height would result in higher basecutter pressure. On the other hand, higher cutting height could result in lower basecutter pressure because of the changed stem diameter and associated stem cutting characteristics (Johnson et al, 2012;Liu et al, 2012). However, the yield could be comparable in both cases.…”

Section: Yield and Sensed Parameter Correlationsmentioning

confidence: 97%

Stem bending force and hydraulic system pressure sensing for predicting napiergrass yield during harvesting

Mathanker

Buss

Gan

et al. 2015

Computers and Electronics in Agriculture

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“…There is also evidence that harvest system energy requirements may be improved through modifications of existing harvest equipment [151][152]. Each approach has variations and has advantages and shortcomings as well.…”

Section: Mechanization Storage and Haulingmentioning

confidence: 99%

Chapter 2 Switchgrass for Bioenergy: Agro-ecological Sustainability

Parrish¹,

Fike²

2015

Sustainable Biofuels

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Calculating the energy balance of biofuel production requires models based on a comprehensive analysis of system inputs and outputs. Typically, life cycle assessment (LCA) models are used. LCAs assign values to the various components of the system being studied in order to interpret their "goodness of fit" in terms of environmental effects. In the case of bioenergy systems, LCAs are used to model energy use, GHG emissions, sequestered C, water balance, and land use change among other impacts. Here, we interject an observation attributed to statistician George Cox, "essentially, all models are wrong, but some are useful". Thus, conclusions about bioenergy system sustainability based on LCA models will be strongly affected by (sometimes seemingly arbitrary) decisions regarding system boundaries, crop production inputs, logistics, biorefinery efficiencies, end products, "byproducts" that can have significant economic and environmental implications, and product uses.System boundaries vary widely among LCA studies, and published analyses span the range from "well-to-tank"-or "field to tank"-to "cradle-to-grave" [6]. Such divergent scopes arise from the fact that LCA studies are often conducted for very different reasons-thus making useful comparisons of LCA stud-

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Cutting energy characteristics of Miscanthus x giganteus stems with varying oblique angle and cutting speed

Cited by 75 publications

References 21 publications

Miscanthus biomass quality composition and methods of feedstock preparation for conversion into synthetic diesel fuel

Miscanthus biomass quality composition and methods of feedstock preparation for conversion into synthetic diesel fuel

Stem bending force and hydraulic system pressure sensing for predicting napiergrass yield during harvesting

Chapter 2 Switchgrass for Bioenergy: Agro-ecological Sustainability

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