Ensuring safety standards in sewage sludge-derived biochar: Impact of pyrolysis process temperature and carrier gas on micropollutant removal

Schlederer, Felizitas; Martín-Hernández, Edgar; Vaneeckhaute, Céline

doi:10.1016/j.jenvman.2023.119964

Cited by 9 publications

(2 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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 . Similar to Schlederer et al 58 , the biochar derived from Acacia nilotica bark exhibited a more substantial enhancement in carbon composition compared to other types of biochar. This can be attributed to its aromatic substructure.…”

Section: Discussionsupporting

confidence: 76%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 76%

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

View full text Add to dashboard Cite

show abstract

“…In addition, greater concentrations have been detected for other biochar materials [3,92]. Schlederer et al [94] stated that pyrolysis influences the PAH concentration, where lowtemperature biochars have a greater PAH concentration. In this case, the trend was the same for gorse-derived biochars (Figure 2), with greater values found for total PAHs (∑light, medium, and heavy) in BG300-1H, followed by BG300-3H.…”

Section: Pah Contentmentioning

confidence: 99%

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

How biochar-based fertilizers and biochar compost affect nutrient cycling and crop productivity

Melo,

Sánchez-Monedero

2024

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Ensuring safety standards in sewage sludge-derived biochar: Impact of pyrolysis process temperature and carrier gas on micropollutant removal

Cited by 9 publications

References 79 publications

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

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

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

How biochar-based fertilizers and biochar compost affect nutrient cycling and crop productivity

Contact Info

Product

Resources

About