Synergistic improvements in energy recovery and bio-oil quality through integrated thermochemical valorization of agro-industrial waste of varying moisture content

Karod, Madeline; Rubin, Samantha F.; Goldfarb, Jillian L.

doi:10.1016/j.biortech.2023.130173

Cited by 1 publication

(1 citation statement)

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“…Torres-Sciancalepore et al 42 found that materials containing a significant amount of cellulose generate biochar with highly volatile matter. The presence of volatile matter has an impact on the stability of materials 43 , the availability of nitrogen, and ultimately the growth of plants 44 . The study conducted by Hanafi et al 45 found that biochars with a volatile matter content of 40% exhibited a breakdown rate of less than 10% over 100 years.…”

Section: Discussionmentioning

confidence: 99%

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: 99%