Pyrolysis and hydrothermal carbonization of biowaste: A comparative review on the conversion pathways and potential applications of char product

Sustainable Chemistry and Pharmacy, Journal Year: 2023, Volume and Issue: 33, P. 101106 - 101106

Published: May 28, 2023

Language: Английский

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Hydrothermal carbonization: Sustainable pathways for waste‐to‐energy conversion and biocoal production

GCB Bioenergy, Journal Year: 2024, Volume and Issue: 16(6)

Published: May 15, 2024

Abstract Hydrothermal carbonization (HTC) technology emerges as a sustainable method to convert wet biomass, including food waste and municipal solid into high‐energy dense biocoal. This process, conducted at temperatures ranging from 180 260°C pressures of 10–50 bar, effectively transforms the organic material in biomass solid, liquid, gaseous outputs. The product, biocoal, possesses high carbon concentration heating values on par with lignite coal, presenting cleaner alternative traditional fossil fuels. Despite operational commercial‐scale HTC facilities globally, further adoption across various feedstocks can improve management energy production. process achieve yields up 80%, particularly favoring generation secondary char higher values. not only aids reducing greenhouse gas emissions through sequestration but also promotes environmental sustainability by yielding nutrient‐rich by‐products for agriculture. As versatile energy‐efficient solution, is pivotal innovation waste‐to‐energy conversion, addressing imperative management. Other supplementary benefits are presented; they include employability, reduction nation's reliance imported energy, better control, therefore considering all pillars sustainability. Future research should focus optimizing efficiency exploring broader applicability feedstocks, enhancing its role global pursuit solutions.

Language: Английский

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The effect of an acidic environment during the hydrothermal carbonization of sewage sludge on solid and liquid products: The fate of heavy metals, phosphorus and other compounds

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 365, P. 121637 - 121637

Published: July 4, 2024

The pH of sewage sludge is a crucial factor during the hydrothermal carbonization process that influences characteristics resulting products and migration certain compounds from solid to liquid phase. Accordingly, this work focused on examining impact HTC process, in particular, equals 2, 3, 4, 5 6 individual hydrothermally carbonized generated at 200 °C 2 h residence time. For reason, chemical physical indicators describing post-processing hydrochar were determined. instance, it was observed phosphorus content detected liquid, derived pH2, rose significantly by 80%. Furthermore, decreasing had significant ash calorific value hydrochar. Additionally, changes specific surface area noticed: = showed an increase 20–30%, while for lower values decrease c.a. 26% achieved. distribution heavy metals between obtained fractions (solid liquid) indicated 92 almost 100% tested transferred A effect these only Zn Ni. Ni 34% 29%, respectively. In addition, sequential extraction also performed order identify mobile non-mobile phases. It noticed acidic environment favours higher amount largest Cd, Pb, Cr Cu, which, their respective amounts fraction 2.7; 3.6; 1.8; 6.2 times higher, compared without correction.

Language: Английский

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Lime-assisted hydrothermal humification and carbonization of sugar beet pulp: Unveiling the yield, quality, and phytotoxicity of products

Biofuel Research Journal, Journal Year: 2024, Volume and Issue: 11(01), P. 2025 - 2039

Published: March 1, 2024

Hydrothermal carbonization (HTC) solid and liquid products may inhibit seed germination, necessitating post-treatment. The hydrothermal humification (HTH) method addresses this drawback by transforming inhibitory compounds, such as aromatics, into artificial humic acids (AHAs) fulvic (AFAs). This study introduces a novel approach investigating the substitution of commonly used alkaline agent in HTH, KOH, with hydrated lime to develop cost-effective fertilizers from sugar beet pulp, enriching them AHAs. It assesses effects on AHA production soluble organic compounds compared KOH. results indicate that significantly reduces furans (from 560 3.15 mg/kg DM 344 3.86 mg/L process liquid) boosts sugars acids, especially lactic acid 4.70 65.82 g/kg 4.05 22.89 liquid), increasing hydrochar yield (68.8% vs. 27.4% KOH). Despite lower KOH (3.47% 15.50%), lime-treated are abundant calcium magnesium, boasting pH 7. property presents safer more efficient alternative fertilizers. characterization AHAs aligns standard natural substances, while lime-assisted HTH products, applied at level 0.01% w/w, could enhance wheat growth nutrient uptake control group. Importantly, these show no toxicity Daphnia magna, underscoring their potential for sustainable agriculture.

Language: Английский

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Ecotoxicity assessment of hydrochar from hydrothermal carbonization of biomass waste

Sustainable Chemistry and Pharmacy, Journal Year: 2025, Volume and Issue: 44, P. 101909 - 101909

Published: Jan. 24, 2025

Language: Английский

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A bibliographic study of biochar and hydrochar: differences and similarities

Journal of Analytical and Applied Pyrolysis, Journal Year: 2025, Volume and Issue: 187, P. 106985 - 106985

Published: Feb. 1, 2025

Language: Английский

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A new paradigm for mining energy from industrial sludge: A low-cost fuel

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 59, P. 104987 - 104987

Published: Feb. 13, 2024

Language: Английский

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Effect of wood and peanut shell hydrochars on the desiccation cracking characteristics of clayey soils

Chemosphere, Journal Year: 2024, Volume and Issue: 358, P. 142134 - 142134

Published: April 25, 2024

Language: Английский

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Agronomic and phytotoxicity test with biosolids from anaerobic CO-DIGESTION with temperature and micro-organism phase separation, based on sewage sludge, vinasse and poultry manure

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 354, P. 120146 - 120146

Published: Feb. 10, 2024

This study deals with energy and agronomic valorisation by anaerobic co-digestion temperature microorganism phase separation of sewage sludge, vinasse poultry manure, the aim achieving an integral waste management, obtaining bioenergy biofertilizer that returns nutrients to soil in a natural way. The yields obtained were 40 mL H2/gVS 391 mLCH4/gVS. resulting effluent showed more than 98 % removal E. coli Total Coliforms, as well total Salmonella. results phytotoxicity tests all proportions studied had phytostimulant phytonutrient properties, 20 having highest germination index (GI) mean values 145.30 %. Finally, trial carried out strawberry crops (Fragaria sp.) addition this biosolid has fertilising properties can be used amendment, increase 145 fresh weight 102.5 dry weight, fruit production doubled respect control. ANOVA statistical corroborated there significant differences crop growth when applying different fertilizer. Therefore, these show technology is promising would contribute environmentally, socially economically transfer towards circular economy model.

Language: Английский

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A sustainable approach for water management and nutrient recovery

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 30, 2024

Language: Английский

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