Effect of Paper Sludge and Dendromass on Properties of Phytomass Pellets

Nosek, Radovan; Backa, Alexander; Ďurčanský, Peter; Holubčík, Michal; Jandačka, Jozef

doi:10.3390/app11010065

Cited by 11 publications

(8 citation statements)

References 17 publications

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“…In general, the quality of these fuels is lower than wood biomass. The main problems are their low bulk density, high ash content, low ash melting temperatures, and low calorific values [5,6]. High ash content and low ash melting temperatures cause deposit formation, slagging, and sintering, which lead to problems during combustion [7].…”

Section: Introductionmentioning

confidence: 99%

“…Various types of straw, cereals, grasses, and seeds, which are low in Ca and high in Si and K, have an initial ash melting point significantly lower than wood fuels [10,11]. Zhai et al [12] Fire 2023, 6 identified the irregular aggregation of KCl, K 2 SO 4 , and other fusible matters as the main factor affecting the ash fusion of wheat straw and corn straw pellets. The ash completely melted at 1300 • C, and the Si, MgO, and CaO contents increased and formed low-meltingpoint eutectics.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Ash Melting Temperatures of Agricultural Pellets Detected during Different Conditions

Kantová

Holubčík

Trnka

et al. 2023

Fire

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Agricultural and other residues are promising renewable energy sources. However, they can cause problems in combustion processes. One of these problems is also low ash melting temperatures. Except, the ash melting behavior can be impacted by many factors, such as ash preparation or used atmosphere. This article deals with comparing different atmosphere conditions during measurements of ash melting temperatures of three agricultural pellets: alfalfa, straw, and hay. The first one was oxidizing with compressed air and nitrogen. The second atmosphere was reduced with the air purge, and the last was only reduced, consisting of 60% carbon monoxide and 40% carbon dioxide. Differences between individual atmospheres were none, up to 9.8%. The most significant differences have appeared between oxidizing and reducing atmospheres. In general, the oxidizing atmosphere presents a less expensive way. More attention should be paid to the use of oxidizing atmosphere for applications in heat sources mainly due to its similarity to the combustion process. However, it would be suitable to realize more comprehensive research regarding ash preparation in different ways and with using of different types of fuel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Ash Melting Temperatures of Agricultural Pellets Detected during Different Conditions

Kantová

Holubčík

Trnka

et al. 2023

Fire

Self Cite

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“…Biomass and especially waste dendromass is one of the solid fuels within renewable energy sources. Today it often replaces fossil fuels used in heating plants producing heat and hot water for households (Plešingerová et al 2020;Nosek et al 2021). In recent years, however, attention has focused not only on the production of biopellets and other fuel products based on dendromass, but also on research into the disintegration of dendromass through its pretreatment and hydrolysis, especially enzymatic hydrolysis (Wang et al 2013;Pažitný et al 2020a and2020b).…”

Section: Introductionmentioning

confidence: 99%

New approaches in pretreatment methods of beech particles in enzymatic hydrolysis – effect of impregnation time and reactor selection

Pažitný

Russ

Boháček

et al. 2022

Nova Biotechnol. Chim.

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Waste dendromass is one of the least used types of biomass and together with waste from the harvesting and processing of agricultural crops, belongs to the wastes that have a high potential for the second-generation ethanol production. Mass concentration of biofuel added to fossil fuels is established by law and this concentration is determined within the reference values for each year. For example, for 2021 it was 8.0 % and for years from 2022 to 2030 the value will increase to 8.2 %. Biofuels in the so-called reference value in the total fuel content have been mandatory since 2017, while the specific reference value is calculated from the energy content of the total amount of fuels placed on the market. This paper provides initial considerations and pilot results based on experimental data obtained in our workplace concerning the application potential of selected type of dendromass – beech particles from the point of view of their pretreatment by steam explosion and steam extrusion for potential production of liquid biofuels based on lignocellulosic biomass. We compared temperature courses of the mentioned pretreatment methods and pretreated samples were tested by enzymatic hydrolysis. Enzymatic hydrolysis results showed that steam explosion and steam extrusion led to concentration enhancement of fermentable monosaccharides compared to original samples depending on used pretreatment method.

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“…Among these, different kinds of biomass stand out, like agricultural crop residues [9][10][11][12], agroindustrial residues [13][14][15], forest biomass [16] and wood processing industry residues [17,18]. Other wastes benefit from this advantageous method of valorization, such as sewage sludge [19][20][21] or waste paper [22]. CFP could become a green energy source based on its close composition to wastepaper.…”

Section: Introductionmentioning

confidence: 99%

Valorization of Insulation Cellulose Waste as Solid Biomass Fuel

et al. 2021

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This paper investigates the ability of insulation cellulose fiber powder (CFP) to be pelletized for its valorization as biomass fuel. CFP is a waste originating from insulation cellulose manufacturing that lacks any method of valorization because of its boron salts content. A sugar byproduct and lignosulfonate (LS) were considered as binders for the pellet manufacturing process. Physical tests were carried out to characterize the pellets’ performance. Chemical and combustion tests were considered to state the pellets’ potential as a green energy source. Raw CFP showed good ability in its pelletization and durability in the range of 15–30% of moisture content. The pellet’s density decreased as water content increased. Binders increased the pellet’s length before and after the durability test. Binders also increased the CFP pellet’s water absorption, demonstrating a potential decrease in durability against environmental factors. Binders also decreased the lower heating value. Ultimate analysis showed a slight Nitrogen increase in both binder combinations that could potentially raise the pollutant NOx combustion emissions. All the combinations showed adequate combustion characteristics, but binders increased ash production. Additives decreased the CFP volatile matter content and increased the fixed carbon, which could facilitate a more stable combustion. DTA curves showed a mass loss rate decrease in the volatile stage for the binder combinations, which also could be considered as an indicator of a more stable combustion. The ashes’ chemical compositions when analyzed by XPS showed boron contents oscillating between 10.03% and 16.42%, demonstrating the possibility of recovering them from the combustion ashes.

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Effect of Paper Sludge and Dendromass on Properties of Phytomass Pellets

Cited by 11 publications

References 17 publications

Analysis of Ash Melting Temperatures of Agricultural Pellets Detected during Different Conditions

Analysis of Ash Melting Temperatures of Agricultural Pellets Detected during Different Conditions

New approaches in pretreatment methods of beech particles in enzymatic hydrolysis – effect of impregnation time and reactor selection

Valorization of Insulation Cellulose Waste as Solid Biomass Fuel

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