Assessment of social, economic, and environmental aspects of woody biomass energy utilization: Direct burning and wood pellets

Nishiguchi, Sho; Tabata, Tomohiro

doi:10.1016/j.rser.2015.12.213

Cited by 80 publications

(26 citation statements)

References 6 publications

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“…After having analyzed literature [1e15], it can be concluded that the most appropriate is the use of wood as a solid fuel for smallsized boiler units, and in the medium term and large thermal power plants. Most likely, direct burning of wood biofuel in the furnace devices of the boiler units is the most promising (at the present time) and the most efficient method of using wood biomass in power engineering [16]. At the same time, until now no mathematical models have been developed that describe the complex of the thermal preparation processes of wet, as a rule (to a greater or lesser extent) wood to ignition, occurring together in the induction period of time.…”

Section: Economic Feasibility Of the Wood Biofuel Usementioning

confidence: 99%

In vitro Effects of a Novel Silver-based Complex on Influenza Virus

Silnikov¹,

Plotnikov

2018

Journal of Pharmacology and Pharmacotherapeutics

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The results of the experimental and theoretical studies of the processes of the single particles ignition of the wood biomass of various forms (a cube, a cylinder and a sphere) have been presented. According to the results of the experimental studies, it has been established that the particles form can have a fairly significant effect on the characteristics and conditions of ignition. It has been shown that the wood particles in the form of a sphere are ignited much faster than cylindrical and cubic ones (ignition delay times are less by 56%). Such a tendency is maintained for particles sizes from 1 $ 10 À3 m to 3 $ 10 À3 m. According to the results of the experiments, the mathematical model for ignition of a particle of wet wood biomass has been formulated, taking into account the joint occurrence of the main processes of the thermal preparation (radiation-convective particle heating, evaporation of water, thermal decomposition of the organic part of the fuel, output, ignition and combustion of gaseous pyrolysis products, ignition of the char residue). The formulated system of the nonlinear differential equations in the partial derivatives with the corresponding boundary conditions describes the ignition process in a two-dimensional setting, taking into account the substantial nonuniformity of the temperature field of a wood particle in the induction period. We have taken into account that the evaporation process takes place in the front. Up to the present time, the mathematical models of such a degree of detailing of the physical processes occurring together when igniting wet wood have not been formulated. A comparative analysis of the ignition delay times (t ign) obtained theoretically and experimentally has showed their satisfactory correspondence. As a result of the numerical simulation, the temperature fields in the system "a fuel particle d hightemperature medium" have been obtained, illustrating the high gradients of the temperatures at the moment of ignition. It has been established that it is possible to ignite the water-saturated wood particles before they dry completely. It has been established that the ignition mode of wood particles is possible before they dry completely.

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Section: Economic Feasibility Of the Wood Biofuel Usementioning

confidence: 99%

In vitro Effects of a Novel Silver-based Complex on Influenza Virus

Silnikov¹,

Plotnikov

2018

Journal of Pharmacology and Pharmacotherapeutics

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“…Looking specifically at Japan, prior LCA research focusing on GHGs has been applied to wood use in buildings [22,23], paper [24], energy [25,26], and individual wood products, such as wood-based boards [27], with one study examining multiple wood applications in buildings, furniture, paper, and energy [28]. Although wood was once nearly universally used in civil engineering applications, such as piles and bridges, following the period of high economic growth from the late 1950s to the early 1970s, the primary construction materials in Japan transitioned to concrete and steel [29].…”

Section: Introductionmentioning

confidence: 99%

Climate Change Mitigation Potential of Wood Use in Civil Engineering in Japan Based on Life-Cycle Assessment

Kayo

Noda

2018

Sustainability

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Throughout its life-cycle, wood contributes to climate change mitigation through carbon storage and material and energy substitution. Focusing on wood use for piles, check dams, paved walkways, guardrails, and noise barriers, we quantified the nationwide potential for climate change mitigation in civil engineering in Japan through 2050. To assess mitigation potential, we examined life-cycle greenhouse gas (GHG) emissions that are avoided by storing carbon in wood and forests, substituting wooden materials for non-wooden materials (cement, concrete, steel, and asphalt), and substituting processing residue and waste wood salvaged from defunct civil engineering structures for fossil fuels (heavy oil). Our projections suggest that there will be a maximum potential domestic log volume of 6.80 million m 3 /year available for civil engineering use in Japan in 2050, and that it would be possible to produce this volume while increasing Japan's forest resources over the long term. A maximum nationwide avoided GHG emissions potential of 9.63 million t-CO 2 eq/year could be achieved in 2050, which is equivalent to 0.7% of Japan's current GHG emissions. The breakdown of avoided emissions is 73%, 19%, and 8% for carbon storage, material substitution, and energy substitution, respectively, with the greatest contributions coming from carbon storage through the use of log piles.

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“…Pellets have smaller volume and higher volumetric energy density than raw wood, which makes storage, shipping and conversion into energy more efficient [14]. In addition, wood pellets usage generates more local employment than direct combustion of woody biomass [15]. The process of pellet production starts with storage facilities for the feedstock and forwarding of the wet feedstock to a dryer, as reduction down to 10% water content is required.…”

Section: Introductionmentioning

confidence: 99%

A survey analysis of the wood pellet industry in Finland: Future perspectives

Proskurina

Alakangas

Heinimö

et al. 2017

Energy

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Finland has the greatest forest cover of western European countries and thus considerable raw material potential for wood pellet market development. Wood pellet production and consumption volumes in the country have increased steadily during the last decades. The aim of this paper is to present an overview of the current status of the Finnish wood pellet business and discuss the main opportunities and challenges facing future development of the industry. The paper collects and revises data on the Finnish wood pellet market based on the results of a survey of nearly 60 wood pellet experts. The results show that neglect of policy support and a lack of suitable regulation are the key factors inhibiting Finnish wood pellet industry development. Currently, wood pellets are not economically competitive with other fuels. However, Finnish wood pellet markets seem promising if challenges such as high raw material costs and competitiveness with other fuels, especially for household users, are addressed. The country has the potential to become a more important producer and consumer on European wood pellet markets if effective policy support and a suitable regulatory framework are formulated.Keyword: Pellets; market; Finland; bioenergy; power energy; biomass IntroductionGrowing demand for CO 2 -free energy, concerns around environmental sustainability, and a desire to decrease dependence on fossil fuels are increasing the role of biomass in energy production. Finland is one of the leading countries in the European Union (EU) in terms of bioenergy utilization and, primarily due to the large share of biomass-based energy in the energy mix, Finland reached a 39% share of renewable energy in final energy consumption in 2014 [1]. The country has plans of reaching 100% renewables by 2050 [2]. Achieving this target is not easy and requires efficient technologies, especially for bioenergy, as this form of energy will likely provide the backbone of energy for transport. Discussing a 100% renewable energy economy, Mathiesen et al.[3] present a Smart Energy Systems concept that may provide a more feasible energy economy structure and enable more sustainable use of bioenergy than current approaches. For Denmark, for example, an overall energy system analysis of a 100% renewable energy system and an energy economy model based on linear programming for the optimal sizing of 100% renewable supply systems are presented by Lund and Mathiesen [4] and Milan et al. [5] respectively. 100% renewable energy system scenarios have also been presented for Japan [6], Macedonia [7] and Portugal [8]. Describing existing studies on 100% renewable energy systems, Olabi [9] concluded that despite major progress in the field, more research and development are required if te aim of 100% renewable energy by 2050 is to be achieved. Bioenergy will clearly play an important role in many EU countries, including Finland, in any 100% renewable energy future. Biomass is a variable and complex material with considerable challenges when used directly, i.e. i...

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Assessment of social, economic, and environmental aspects of woody biomass energy utilization: Direct burning and wood pellets

Cited by 80 publications

References 6 publications

In vitro Effects of a Novel Silver-based Complex on Influenza Virus

In vitro Effects of a Novel Silver-based Complex on Influenza Virus

Climate Change Mitigation Potential of Wood Use in Civil Engineering in Japan Based on Life-Cycle Assessment

A survey analysis of the wood pellet industry in Finland: Future perspectives

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