Spectral Analysis of Anthracite

Malysheva, V. Yu.; Fedorova, N. I.; Nikitin, A. P.

doi:10.3103/s1068364x23701181

Cited by 2 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average HHV of gorse was lower than those found by Núñez-Regueira et al [54], who obtained values of 20.18 and 20.95 MJ kg −1 , and than those measured and calculated by González Martínez et al [50], with HHV values of 19.5 and 19.6 MJ kg −1 for U. europaeus. The average HHV for broom was also lower than that obtained by González Martínez et al [50] which ranged between 18.6 and 19.3 MJ kg −1 or than those reported by Núñez- [61]; LIG: lignite [73], BIT: bituminous coal [79], ANT: anthracite [75], and ANT2: anthracite [74].…”

Section: Elemental Analysiscontrasting

confidence: 59%

“…The biochars obtained by pyrolysis at 300 • C presented H/C and O/C ratios close to those of low grade sub-bituminous coals [61] and lignite coal [73]. Instead, biochars at 600 • C presented low H/C and O/C ratios, with H/C values near to those reported for anthracite [74,75], but they had a higher O/C. Therefore, it could be concluded that the biochars from broom and gorse have similar characteristics to those of traditional fossil fuels and eventually could be cleaner substitute energy sources [61].…”

Section: Elemental Analysismentioning

confidence: 63%

“…Therefore, during the combustion of these biochars, lower SO 2 emissions will be produced, reducing their impact on the environment as well as the costs of purifying the emitted gases. [61]; LIG: lignite [73], BIT: bituminous coal [79], ANT: anthracite [75], and ANT2: anthracite [74].…”

Section: Elemental Analysismentioning

confidence: 99%

“…The data with labels correspond to the literature values. LSGC: low-grade sub-bituminous coal[61]; LIG: lignite[73], BIT: bituminous coal[79], ANT: anthracite[75], and ANT2: anthracite[74].…”

mentioning

confidence: 99%

See 3 more Smart Citations

The Effects of Feedstock, Pyrolysis Temperature, and Residence Time on the Properties and Uses of Biochar from Broom and Gorse Wastes

Cárdenas-Aguiar,

Méndez,

Gascó

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Biochar (BC), which can be produced from several feedstocks, has been widely studied. However, the BC derived from highly pyrolytic shrubs, such as broom and gorse, has been less frequently used and only partially characterized. These wastes, when used for the preparation of biochar, can fix carbon and contribute to environmental conservation, helping to achieve sustainable development objectives. Eight biochars from broom and gorse were produced and fully analyzed, providing a more complete and novel description, with new insights for assessing their utilization. The aims of this study were to elucidate the effects of feedstock, pyrolysis temperature, and residence time on biochar properties and to assess the adequacy of these biochars as fuel. Elemental and proximate analyses and estimations of the lower and higher heating values were performed, and physical and chemical properties, as well as several other related energy indices, were determined. The experimental results showed that the temperature was a key factor in the properties of the biochars, while residence time was less important. The BCs obtained from the two feedstocks did not show important effects on the properties, which is consistent with the fact that they are woody legumes. These biochars had a high carbon content and were thermally stable. The BCs also had a high calorific value and suitable energetic properties. Additionally, their PAH contents were low, indicating that the use of these biochars would be safe. In conclusion, broom- and gorse-derived biochars can be considered as renewable fuels for green energy production.

show abstract