Energy utilisation of biowaste — Sunflower-seed hulls for co-firing with coal

Raclavská, Helena; Juchelková, Dagmar; Roubíček, Václav; Matýsek, Dalibor

doi:10.1016/j.fuproc.2010.03.006

Cited by 52 publications

(26 citation statements)

References 33 publications

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“…Compared with SSS and PSS, the carbon content of biochar in WSS was noticeably lower and the O/C ratio was higher. These results may reflect that WSS contain more ash and metallic oxide (Raclavská et al 2011).…”

Section: Gas Analysismentioning

confidence: 93%

“…Pyrolysis can also help to avoid problems caused by waste disposal. There have been many studies on the application of melon seeds and pyrolysis characteristics of SSS (Cancalon 1971;Demirbaş 2006;Raclavská et al 2011;Rai et al 2015). The pyrolysis of SSS provides an option for thermal upgrading to higher calorific value fuels through the separation and purification to high grade energy (Zabaniotou et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Thermo-Chemical Degradation and Pyrolysis Properties for Three Kinds of Biomass Residues

Liu¹,

Hua²,

Wu³

2016

BioResources

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This study investigated the thermo-chemical degradation and fast pyrolysis of watermelon seed shells (WSS), pumpkin seed shells (PSS), and sunflower seed shells (SSS). The raw materials and pyrolysis products were analyzed. The results showed that the carbon content (52.96%), hydrogen content (7.38%) and higher heating value (HHV) (23.88 MJ/kg) of PSS were highest, and the bio-oil from the PSS pyrolysis had high amounts of phenolic compounds. For SSS, the content of holocellulose (83.47 wt.%) was the highest, but the lignin content (13.62 wt.%) was lower than the other samples. The gas yield from the SSS pyrolysis was the largest and the bio-oil content of acids (acetic acid 36.53%) and ketones (1-hydroxy-2-propanone 9.90%) were higher. For WSS, the yield of the biochar was 39.14 wt.%. Additionally, the raw materials' structures were similar. The thermal decomposition process of all seed shells had three stages, i.e. dehydration, active pyrolysis, and passive pyrolysis. In all three kinds of bio-oil, the components were mainly guaiacol-type and phenol-type. The guaiacol-type in the bio-oils from PSS (43.78%) and WSS (32.33%) were higher than in the bio-oil from SSS.

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Section: Gas Analysismentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Characterization of Thermo-Chemical Degradation and Pyrolysis Properties for Three Kinds of Biomass Residues

Liu¹,

Hua²,

Wu³

2016

BioResources

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“…It is observed that the residue is formed of a complex mixture of compounds, including dolomite (CaMgCO 3 ), periclase (MgO), calcium silicate (CaSiO 3 ), magnesium pyrophosphate (Mg 2 P 2 O 7 ), potassium tetrasilicate (K 2 Si 4 O 9 ) and hydroxyapatite (Ca 5 (PO 4 ) 3 OH). Other authors [24] have also reported XRD patterns of sunflower husk ashes with a great variety of phosphates, carbonates and complex silicates.…”

Section: Resultsmentioning

confidence: 95%

Feasibility of Utilization of Charcoal and Ashes From Biomass-Energy Processes in Construction Materials

Quaranta¹,

Caligaris²,

Pelozo³

et al. 2017

WIT Transactions on Ecology and the Environment

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Biomass-energy processes are those used to obtain energy by the burning or biochemical converting of any organic matter to be used for fuel. In recent years, some materials used as a source for biomass energy have been obtained from the discards of agricultural activities. These include wood, sawdust, corn, sugarcane and rice husks, among others. The processes for converting biomass into energy are numerous. The most commonly used are combustion, co-firing process and pyrolysis. The residual endproducts obtained from these processes are highly dependent on the process conditions, especially temperature, pressure and atmosphere. Char and ashes are the most commonly obtained materials. The objective of this work is to analyse the feasibility of reusing these discards of biomass-energy processes, as additions in clay mixtures for the production of ceramic materials for civil construction. For this purpose, charcoal and ashes obtained from various biomasses have been characterized by SEM, EDS, DTA-TGA, XRD, etc. These results, and the determination of the theoretical sintering temperatures by the use of ternary diagrams, lead to the establishment of the feasibility of using these discards in current ceramic industry processes. Charcoal and ashes from sunflower husks, brewery waste and pine sawdust are the materials studied.

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“…For 2014/15, the global production is expected to be 39.8 MT. Sunflower meal, the by-product of the oil extraction process, has been generally used as food supplement for non-ruminants (Hernández et al, 2011) and as biomass for power generation (Raclavska et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Valorization of sunflower meal through the production of ethanol from the hemicellulosic fraction

Tavares

Sene

Christ

2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TSunflower is among the major oil seeds crop grown in the world and the by-products generated during the seeds processing represent an attractive source of lignocellulosic biomass for bioprocesses. The conversion of lignocellulosic fibers into fermentable sugars has been considered as a promising alternative to increase the demand for ethanol. The present study aimed to establish the fermentation conditions for ethanol production by Scheffersomyces stipitis ATCC 58376 in sunflower meal hemicellulosic hydrolysate, through a 2 3 CCRD (Central Composite Rotational Design) factorial design. Under the selected conditions (pH 5.25, 29 ºC and 198 rpm) the final ethanol concentration was 13.92 g L -1 and the ethanol yield was 0.49 g g -1 .Valorização do farelo de girassol através da produção de etanol a partir da fração hemicelulósica R E S U M O O girassol está entre as principais oleaginosas cultivadas no mundo e os subprodutos gerados durante o processamento das sementes representam uma fonte atraente de biomassa lignocelulósica para bioprocessos. A conversão de fibras lignocelulósicas em açúcares fermentáveis tem sido considerada uma alternativa promissora para aumentar a demanda de etanol. O presente estudo teve, como objetivo, estabelecer as condições de fermentação para a produção de etanol por Scheffersomyces stipitis ATCC 58376 em hidrolisado hemicelulósico de farelo de girassol através de um planejamento fatorial DCCR 2 3 . Sob as condições selecionadas (pH 5,25, 29 ºC e 198 rpm) a concentração final de etanol foi 13,92 g L -1 e o rendimento 0,49 g g -1 .

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Energy utilisation of biowaste — Sunflower-seed hulls for co-firing with coal

Cited by 52 publications

References 33 publications

Characterization of Thermo-Chemical Degradation and Pyrolysis Properties for Three Kinds of Biomass Residues

Characterization of Thermo-Chemical Degradation and Pyrolysis Properties for Three Kinds of Biomass Residues

Feasibility of Utilization of Charcoal and Ashes From Biomass-Energy Processes in Construction Materials

Valorization of sunflower meal through the production of ethanol from the hemicellulosic fraction

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