Analytical and applied pyrolysis of challenging biomass feedstocks: Effect of pyrolysis conditions on product yield and composition

Tiwari, Mahendra; Dirbeba, Meheretu Jaleta; Lehmusto, Juho; Yrjas, Patrik; Vinu, Ravikrishnan

doi:10.1016/j.jaap.2024.106355

Cited by 8 publications

(2 citation statements)

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“…The rise in carbon content as the pyrolysis temperature increases (according to Table 4 ) could be attributed to the higher degree of polymerization, resulting in the formation of a condensed aromatic C structure 40 . Comparable findings were documented for biochars derived from Eulalia Grass 55 and wood-derived biochars 56 . The depletion of hydrogen and oxygenated groups (Table 4 ) observed in our study provides more evidence for our findings, indicating the degradation of weaker bonds in the biochars 57 .…”

Section: Discussionmentioning

confidence: 69%

“…The eggplant biochars have a much higher potassium (K) content compared to the Acacia nilotica bark. This difference may be attributed to the higher concentration of these elements in the respective feedstocks 56 . Nevertheless, the eggplant biomass had a higher potassium (K) concentration compared to its charcoal, indicating a gradual release of potassium during the pyrolysis process.…”

Section: Discussionmentioning

confidence: 99%

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Liming potential and characteristics of biochar produced from woody and non-woody biomass at different pyrolysis temperatures

Murtaza,

Usman,

Iqbal

et al. 2024

Sci Rep

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Large amount of wastes are burnt or left to decompose on site or at landfills where they cause air pollution and nutrient leaching to groundwater. Waste management strategies that return these food wastes to agricultural soils recover the carbon and nutrients that would otherwise have been lost, enrich soils and improve crop productivity. The incorporation of liming materials can neutralize the protons released, hence reducing soil acidity and its adverse impacts to the soil environment, food security, and human health. Biochar derived from organic residues is becoming a source of carbon input to soil and provides multifunctional values. Biochar can be alkaline in nature, with the level of alkalinity dependent upon the feedstock and processing conditions. This study conducted a characterization of biochar derived from the pyrolysis process of eggplant and Acacia nilotica bark at temperatures of 300 °C and 600 °C. An analysis was conducted on the biochar kinds to determine their pH, phosphorus (P), as well as other elemental composition. The proximate analysis was conducted by the ASTM standard 1762-84, while the surface morphological features were measured using a scanning electron microscope. The biochar derived from Acacia nilotica bark exhibited a greater yield and higher level of fixed carbon while possessing a lower content of ash and volatile components compared to biochar derived from eggplant. The eggplant biochar exhibits a higher liming ability at 600 °C compared to the acacia nilotica bark-derived biochar. The calcium carbonate equivalent, pH, potassium (K), and phosphorus (P) levels in eggplant biochars increased as the pyrolysis temperature increased. The results suggest that biochar derived from eggplant could be a beneficial resource for storing carbon in the soil, as well as for addressing soil acidity and enhancing nutrients availability, particularly potassium and phosphorus in acidic soils.

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Section: Discussionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%