Study of knotweed (Reynoutria) as possible phytomass resource for energy and industrial utilization

Strašil, Z.; Kára, J.

doi:10.17221/46/2009-rae

Cited by 24 publications

(19 citation statements)

References 4 publications

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“…Another research of related to the energy potential of Japanese knotweed indicated its high energy potential and satisfactory chemical composition for direct combustion purposes. In accordance to the mentioned information it can be concluded that there is a possibility of subsequent utilization of Japanese knotweed waste biomass as a feedstock for briquette fuel production due to the current plant extension, effort to exterminate already the existing plant population and the plant high biomass yield and energy potential [12].…”

Section: Introductionsupporting

confidence: 56%

“…Energy potential of Japanese knotweed proved its suitability for combustion properties, thus, for energy production in the form of briquette biofuel. The gross calorific value of Japanese knotweed was determined in the previous study equal to 18.4 MJ·kg -1 [12]. The energy potential of the investigated feedstock material exceeded the energy potential of other waste biomass, namely, the gross calorific value of forest wood residues was proved equal to 18.7 MJ·kg -1 and equal to 17.2 MJ·kg -1 for oat grain residues [21].…”

Section: Chemical Analysismentioning

confidence: 99%

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Potential of wild growing Japanese knotweed (Reynoutria japonica) for briquette production

Brunerová¹,

Müller²,

Brožek³

2017

Engineering for Rural Development

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Abstract. Popularity of renewable energies and their competitiveness with fossil fuels are rapidly increasing also due public interest in such topic as biomass, which represents 75 % of all renewable resources. Therefore, much of the current literature pays particular attention to variety of biomasses, which are not publicly well-known yet. Japanese knotweed (Reynoutria japonica) is a hardy plant with outstanding biomass yield up to 30 t·ha -1 of dry matter (i.e. 583.32 GJ·h -1 ), however, it belongs to invasive plants, which spread rapidly (>200 stalks·m -2 ), form dense monocultures and replace native vegetation. Thus, there is intensive effort to reduce its population and to prevent further spread. Considering that, a great amount of biomass with extremely high yield can be produced and utilized for energy production. The aim of the present study was to determine the potential of Japanese knotweed as a feedstock material for briquette production within its chemical, mechanical and microscopic properties. Within the chemical analysis a satisfactory level of moisture content (8.84 %), ash content (1.14 %), gross calorific value (19.43 MJ·kg -1 ) and net calorific value (17.71 MJ·kg -1 ) were proved. The mechanical analysis of the produced briquette samples also proved a high level of biofuel quality; mechanical durability was determined equal to 95.1 %, volume density equal to 989.1 kg·m -3 and rupture force was 112.1 N·mm -1 . The microscopic analysis described the surface of the material and dimensions of the particle size within what it proved that 68 % of the particles had the surface area <2 mm 2 and average length of the fraction size <5 mm was observed in 35 %.Overall evaluation of all investigated parameters of Japanese knotweed exhibited more than satisfactory results. The results of this study indicate that Japanese knotweed is a crop with high energy potential.

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Section: Introductionsupporting

confidence: 56%

Section: Chemical Analysismentioning

confidence: 99%

Potential of wild growing Japanese knotweed (Reynoutria japonica) for briquette production

Brunerová¹,

Müller²,

Brožek³

2017

Engineering for Rural Development

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“…Of the four studied herbaceous invasive alien species (IAS), the highest annual biomass yield was observed for F. japonica and S. gigantea , 8.61 and 8.64 ton DM per hectare respectively. Strašil and Kára measured a comparable biomass production in the Czech Republic for F. japonica with the same harvest regime (9.06 ton DM ha −1 ). Impatiens glandulifera and H. mantegazzianum had a lower biomass yield (5.78 and 6.04 ton DM ha −1 ) but still produced more biomass than the most productive herbaceous Low‐Input High‐Diversity (LIHD) systems in conservation areas in the same study area (Fig ) .…”

Section: Discussionmentioning

confidence: 83%

Biomass of invasive plant species as a potential feedstock for bioenergy production

Meerbeek

Appels

Dewil

et al. 2015

Biofuels Bioprod Bioref

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Invasive alien species (IAS) are one of the most important drivers of species loss. A series of recent (inter)national policies and guidelines however did not prevent new introductions and further spread of non‐indigenous species. But instead of considering invasive plant species as a burden, the biomass production of IAS can be considered and used as an ecosystem service. To assess the possibilities for bioenergy production of four invasive alien plant species in Europe, Fallopia japonica, Heracleum mantegazzianum, Impatiens glandulifera and Solidago gigantea, we determined their biomass production, gross calorific value and biogas yield. The viability of the propagules after digestion was also tested to assess the dispersal risk related to the bioenergy chain. Fallopia japonica and S. gigantea achieved a high annual biomass yield of 8.6 ton DM per hectare. Impatiens glandulifera and H. mantegazzianum had a lower biomass production (5.8 and 6.0 ton DM ha−1). Without extra inputs or agronomic optimization of the crops, the anaerobic digestion of the studied invasive plant species achieved comparable energy outputs per hectare (28–88 GJ ha−1) as some of the current bioenergy systems. All propagules lost their viability after digestion. The risk of further invasion is thus minimized during the digestion process. However, caution during harvest and transport is required to prevent the spread of new propagules. The energetic valorization of the biomass of IAS can create an economic incentive for habitat restoration of invaded sites and offers the opportunity to reconcile the restoration of the invaded habitats with renewable energy goals. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…Second generation bioenergy crops avoid competition with food and feed production, reduce the environmental impacts of fertilizers and herbicides, and enhance biodiversity in the landscape (Gomez et al, 2008;Havlík et al, 2011;Naik et al, 2009). Especially herbaceous perennials have great potentials to fulfill these criteria and various new species for bioenergy production have been tested, e.g., Miscanthus giganteus, Silphium perfoliatum, Sida hermaphrodita and Fallopia x bohemica (Borkowska and Molas, 2012;Franzing et al, 2014;Lewandowski et al, 2000;Pude andFranken, 2001, Lewandowski andHeinz, 2003;Strašil and Kára, 2010). The Giant Knotweed, or Sakhalin Knotweed (Fallopia sachalinensis), grows natively on the Russian island of Sakhalin, in Japan and on the Korean peninsula.…”

Section: Introductionmentioning

confidence: 99%

Transpiration and biomass production of the bioenergy crop Giant Knotweed Igniscum under various supplies of water and nutrients

Mantovani

Veste

Gypser

et al. 2014

Journal of Hydrology and Hydromechanics

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Soil water availability, nutrient supply and climatic conditions are key factors for plant production. For a sustainable integration of bioenergy plants into agricultural systems, detailed studies on their water uses and growth performances are needed. The new bioenergy plant Igniscum Candy is a cultivar of the Sakhalin Knotweed (Fallopia sachalinensis), which is characterized by a high annual biomass production. For the determination of transpiration-yield relations at the whole plant level we used wicked lysimeters at multiple irrigation levels associated with the soil water availability (25, 35, 70, 100%) and nitrogen fertilization (0, 50, 100, 150 kg N ha -1 ). Leaf transpiration and net photosynthesis were determined with a portable minicuvette system. The maximum mean transpiration rate was 10.6 mmol m -2 s -1 for well-watered plants, while the mean net photosynthesis was 9.1 µmol m -2 s -1 . The cumulative transpiration of the plants during the growing seasons varied between 49 l (drought stressed) and 141 l (well-watered) per plant. The calculated transpiration coefficient for Fallopia over all of the treatments applied was 485.6 l kg -1 . The transpiration-yield relation of Igniscum is comparable to rye and barley. Its growth performance making Fallopia a potentially good second generation bioenergy crop.

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Study of knotweed (Reynoutria) as possible phytomass resource for energy and industrial utilization

Cited by 24 publications

References 4 publications

Potential of wild growing Japanese knotweed (Reynoutria japonica) for briquette production

Potential of wild growing Japanese knotweed (Reynoutria japonica) for briquette production

Biomass of invasive plant species as a potential feedstock for bioenergy production

Transpiration and biomass production of the bioenergy crop Giant Knotweed Igniscum under various supplies of water and nutrients

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