Physico-mechanical and energy properties of pellets made from ground walnut shells, coniferous tree cones and their mixtures

Gendek, Arkadiusz; Aniszewska, Monika; Owoc, D.; Tamelová, Barbora; Malaťák, Jan; Velebil, Jan; Krilek, Jozef

doi:10.1016/j.renene.2023.04.122

Cited by 8 publications

(4 citation statements)

References 42 publications

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“…According to Jeníček et al [21], Chen et al [22], and Gendek et al [23], torrefied biomass has three main advantages over unprocessed biomass-increased heating value, increased energy density, and improved physical characteristics, such as shape retention [24], homogeneity [23], and hydrophobic behaviour [25]. The heating value may increase from 17 up to 27 MJ kg −1 [26] through torrefaction, which is enabled by the decrease in oxygen content [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Substituting Solid Fossil Fuels with Torrefied Timber Products

Malaťák,

Jankovský,

Malaťáková

et al. 2023

Materials

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As a push towards alternative and renewable resources for heat and power generation, biomass and thermally treated fuels from biomass may be viable options in the upcoming economic reality. This study the verified mass and energy balance of spruce woody biomass after low temperature pyrolysis between 250 and 550 °C. The results showed that low-temperature pyrolysis can yield high-grade biochar suitable for substitution of fossil fuels. Crucially, the net calorific value of biochar processed at 350 °C substantially exceeded that of brown coal. An economic analysis was carried out on the assumption of the current economic reality in the Czech Republic. It was shown that even if the price of the biochar slightly increased, it would still be beneficial to invest in torrefaction technology over paying carbon credits.

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Section: Introductionmentioning

confidence: 99%

Substituting Solid Fossil Fuels with Torrefied Timber Products

Malaťák,

Jankovský,

Malaťáková

et al. 2023

Materials

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“…The results of qualitative parameters of green wood chip samples in a major Polish region show the possibility of replacing fossil energy sources and at the same time how to reduce the carbon intensity in Poland. The analyses determine the quality parameters [ 42 , 92 , 93 ] that are essential for direct energy recovery of wood chips in current combustion plants, but also the economic parameters [ 54 ] sustainability of thermochemical technologies [ [38] , [39] , [40] ].…”

Section: Discussionmentioning

confidence: 99%

“…The quality of the wood chips plays a major role in the selection of the appropriate energy recovery method such as direct combustion [ 38 ], gasification [ 39 ] and pyrolysis treatment [ 40 ]. The direct combustion of biomass is influenced by both the form and quality of these wood chips [ 41 ], pellets [ 42 ] and briquettes [ 43 ]. The elemental composition of the fuel is essential for the dynamics of the combustion process [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

Regional wood chip quality parameters decomposition and price linkage with impact on Polish energy sustainability: Time frequency analysis between 2013 and 2019

Čermák,

Malaťáková,

Malaťák

et al. 2024

Heliyon

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“…The world’s pellet market is constantly expanding, with substantial growth anticipated in the coming years . Although the production of pellets started decades ago, significant progress in understanding key factors influencing pelletizing processes happened only in the last five years . Pellet fuels, which are formed by compressing biomass or organic material, are mainly produced from five common biomass categories: agricultural residues, food waste, industrial waste, untreated lumber, and energy crops .…”

Section: Pellet Fuel Production Technologymentioning

confidence: 99%

Biomass Pellet Fuel Production and Utilization in Ghana: A Review

Apraku,

Shen

2024

ACS Sustainable Resour. Manage.

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The increasing global demand for energy drives extensive consumption of fossil fuels, resulting in excessive CO 2 and greenhouse gas emissions which contribute to environmental pollution and climate change. Projections indicate a 19% increase in energy demand in Ghana and worldwide by 2040, accompanied by a 1.9% rise in CO 2 emissions annually. To address this issue, imperative research and development into alternative fuels are crucial for reducing the reliance on fossil fuels and mitigating their adverse environmental impacts. Exploring renewable resources, devoid of harmful effects on health and the environment, is very essential. The development and utilization of pellet fuels from diverse biomass sources present both opportunities and hurdles faced by current technologies. Pellets have an impressive breakage rate below 1.5%−2.0%, dry base moisture content below 10%−15%, carbon content below 0.5%, nitrogen and sulfur contents both below 0.07%, and ash content below 1.5%, which make them burn at an exceptional combustion efficiency. Biomass pellet fuels have their environmental protection emissions conform to the emission standards set for gas-fired boilers. The standardized nature of biomass pellets makes them more marketable and accessible for use in various energy applications, and they can be made from all kinds of biomass residues or wastes. After the densification process, it solves the environmental pollution of scraps, and it is capable of replacing coal for combustion in boilers and other combustion devices. This paper reviews the local systems for producing and utilizing pellet fuels made from low-density biomass residues in Ghana. The paper critically analyzes the potentials of various biomass resources in Ghana and their utilizations and the major biomass conversion techniques commonly used in Ghana. Furthermore, the paper presents diverse features of the pellet fuel production process comprising biomass feedstock processing before pelletizing, parameters influencing the pelletization process to produce quality pellet fuels, and the properties of pellet fuels in Ghana. The latter part of this paper reviews the major applications of pellet fuels and their economic feasibility in Ghana.

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Physico-mechanical and energy properties of pellets made from ground walnut shells, coniferous tree cones and their mixtures

Cited by 8 publications

References 42 publications

Substituting Solid Fossil Fuels with Torrefied Timber Products

Substituting Solid Fossil Fuels with Torrefied Timber Products

Regional wood chip quality parameters decomposition and price linkage with impact on Polish energy sustainability: Time frequency analysis between 2013 and 2019

Biomass Pellet Fuel Production and Utilization in Ghana: A Review

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