Prediction of higher heating value based on elemental composition for lignin and other fuels

Maksimuk, Yury; Antonava, Zoya; Krouk, Vladimir; Korsakova, Alina S.; Курсевич, В. Н.

doi:10.1016/j.fuel.2019.116727

Cited by 56 publications

(20 citation statements)

References 69 publications

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“…In theory, acid hydrolysis of lignocellulosic biomass should cause the most easily hydrolysed fractions (hemicelluloses here) to be removed in the hydrolysis liquor, thereby increasing the calorific power of the resulting solid residue. In fact, the cellulose and lignin fractions are known to have a higher calorific power than the hemicellulose fraction [44,45]. This was indeed the case with the three raw materials studied.…”

Section: Acid Hydrolysissupporting

confidence: 57%

Tagasaste, Leucaena and Paulownia. Three Industrial Crops for Energy and Hemicelluloses Production

Palma

Rodriguez

Díaz

et al. 2021

Preprint

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BackgroundBurning fast-growing trees for energy production can be an effective alternative to coal combustion. Thus, lignocellulosic material, which can be used to obtain chemicals with a high added value, is highly abundant, easily renewed and usually inexpensive. In this work, hemicellulose extraction by acid hydrolysis of plant biomass from three different crops (Chamaecytisus proliferus, Leucaena diversifolia and Paulownia trihybrid) was modelled and the resulting solid residues were used for energy production.ResultsThe influence of the nature of the lignocellulosic raw material and the operating conditions used to extract the hemicellulose fraction on the heat capacity and activation energy of the subsequent combustion process was examined.The heat power and the activation energy of the combustion process were found to depend markedly on the hemicellulose content of the raw material. Thus, a low content in hemicelluloses resulted in a lower increased combustion efficiency and energy yield after acid hydrolysis stage.The process was also influenced by the operating conditions of the hydrolysis treatment, which increased the superior calorific value (SCV) of the solid residue by 0.6–9.7% relative to the starting material. Also, the activation energy of combustion of the hydrolysis residues from tagasaste and paulownia was considerably lower than that for the starting materials, the difference increasing with increasing degree of conversion as well as with increasing temperature and acid concentration in the acid hydrolysis.The activation energy of combustion of the solid residues from acid hydrolysis of tagasaste and paulownia decreased markedly with increasing degree of conversion, and also with increasing temperature and acid concentration in the hydrolysis treatment. No similar trend was observed in leucaena owing to its low content in hemicelluloses.ConclusionsAcid hydrolysis of tagasaste, leucaena and paulownia provided a valorizable liquor containing a large amount of hemicelluloses and a solid residue with an increased heat power amenable to efficient valorization by combustion. There are many potential applications of the hemicelluloses-rich and lignin-rich fraction, for example as multi-components of bio-based feedstocks for 3D printing, for energy and other value-added chemicals.

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Section: Acid Hydrolysissupporting

confidence: 57%

Tagasaste, Leucaena and Paulownia. Three Industrial Crops for Energy and Hemicelluloses Production

Palma

Rodriguez

Díaz

et al. 2021

Preprint

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“…In previous paragraph the high correlation between GCV and hemicelluloses extracted was established. In fact, the cellulose and lignin fractions are known to have a higher calorific power than the hemicellulose fraction [ 42 , 43 ]. This was indeed the case with the three raw materials studied.…”

Section: Resultsmentioning

confidence: 99%

Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production

Palma

Loaiza

Díaz

et al. 2021

Biotechnol Biofuels

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Background Burning fast-growing trees for energy production can be an effective alternative to coal combustion. Thus, lignocellulosic material, which can be used to obtain chemicals with a high added value, is highly abundant, easily renewed and usually inexpensive. In this work, hemicellulose extraction by acid hydrolysis of plant biomass from three different crops (Chamaecytisus proliferus, Leucaena diversifolia and Paulownia trihybrid) was modelled and the resulting solid residues were used for energy production. Results The influence of the nature of the lignocellulosic raw material and the operating conditions used to extract the hemicellulose fraction on the heat capacity and activation energy of the subsequent combustion process was examined. The heat power and the activation energy of the combustion process were found to depend markedly on the hemicellulose content of the raw material. Thus, a low content in hemicelluloses resulted in a lower increased energy yield after acid hydrolysis stage. The process was also influenced by the operating conditions of the acid hydrolysis treatment, which increased the gross calorific value (GCV) of the solid residue by 0.6–9.7% relative to the starting material. In addition, the activation energy of combustion of the acid hydrolysis residues from Chamaecytisus proliferus (Tagasaste) and Paulownia trihybrid (Paulownia) was considerably lower than that for the starting materials, the difference increasing with increasing degree of conversion as well as with increasing temperature and acid concentration in the acid hydrolysis. The activation energy of combustion of the solid residues from acid hydrolysis of tagasaste and paulownia decreased markedly with increasing degree of conversion, and also with increasing temperature and acid concentration in the acid hydrolysis treatment. No similar trend was observed in Leucaena diversifolia (Leucaena) owing to its low content in hemicelluloses. Conclusions Acid hydrolysis of tagasaste, leucaena and paulownia provided a valorizable liquor containing a large amount of hemicelluloses and a solid residue with an increased heat power amenable to efficient valorization by combustion. There are many potential applications of the hemicelluloses-rich and lignin-rich fraction, for example as multi-components of bio-based feedstocks for 3D printing, for energy and other value-added chemicals.

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“…The higher heating value (HHV) of the samples was determined by measuring the gross heat of combustion energy, using a Parr 1261 bomb calorimeter (Parr Instrument Co., Moline, IL, USA), based on the ASTM D 4809 method. Additionally, a theoretical calculation of HHV was performed from the elemental analysis results, using the following equation (Equation ( 1)) [50,51]:…”

Section: Raw Materials Physicochemical Propertiesmentioning

confidence: 99%

Valorization of Hazardous Organic Solid Wastes towards Fuels and Chemicals via Fast (Catalytic) Pyrolysis

Rekos

Charisteidis

Tzamos

et al. 2022

Sustainable Chemistry

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The management of municipal and industrial organic solid wastes has become one of the most critical environmental problems in modern societies. Nowadays, commonly used management techniques are incineration, composting, and landfilling, with the former one being the most common for hazardous organic wastes. An alternative eco-friendly method that offers a sustainable and economically viable solution for hazardous wastes management is fast pyrolysis, being one of the most important thermochemical processes in the petrochemical and biomass valorization industry. The objective of this work was to study the application of fast pyrolysis for the valorization of three types of wastes, i.e., petroleum-based sludges and sediments, residual paints left on used/scrap metal packaging, and creosote-treated wood waste, towards high-added-value fuels, chemicals, and (bio)char. Fast pyrolysis experiments were performed on a lab-scale fixed-bed reactor for the determination of product yields, i.e., pyrolysis (bio)oil, gases, and solids (char). In addition, the composition of (bio)oil was also determined by Py/GC-MS tests. The thermal pyrolysis oil from the petroleum sludge was only 15.8 wt.% due to the remarkably high content of ash (74 wt.%) of this type of waste, in contrast to the treated wood and the residual paints (also containing 30 wt.% inorganics), which provided 46.9 wt.% and 35 wt.% pyrolysis oil, respectively. The gaseous products ranged from ~7.9 wt.% (sludge) to 14.7 (wood) and 19.2 wt.% (paints), while the respective solids (ash, char, reaction coke) values were 75.1, 35, and 36.9 wt.%. The thermal (non-catalytic) pyrolysis of residual paint contained relatively high concentrations of short acrylic aliphatic ester (i.e., n-butyl methacrylate), being valuable monomers in the polymer industry. The use of an acidic zeolitic catalyst (ZSM-5) for the in situ upgrading of the pyrolysis vapors induced changes on the product yields (decreased oil due to cracking reactions and increased gases and char/coke), but mostly on the pyrolysis oil composition. The main effect of the ZSM-5 zeolite catalyst was that, for all three organic wastes, the catalytic pyrolysis oils were enriched in the value-added mono-aromatics (BTX), especially in the case of the treated wood waste and residual paints. The non-condensable gases were mostly consisting of CO, CO2, and different amounts of C1–C4 hydrocarbons, depending on initial feed and use or not of the catalyst that increased the production of ethylene and propylene.

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Prediction of higher heating value based on elemental composition for lignin and other fuels

Cited by 56 publications

References 69 publications

Tagasaste, Leucaena and Paulownia. Three Industrial Crops for Energy and Hemicelluloses Production

Tagasaste, Leucaena and Paulownia. Three Industrial Crops for Energy and Hemicelluloses Production

Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production

Valorization of Hazardous Organic Solid Wastes towards Fuels and Chemicals via Fast (Catalytic) Pyrolysis

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