Synergistic treatment of sewage sludge and food waste digestate residues for efficient energy recovery and biochar preparation by hydrothermal pretreatment, anaerobic digestion, and pyrolysis

Applied Energy, Journal Year: 2024, Volume and Issue: 364, P. 123203 - 123203

Published: April 12, 2024

Language: Английский

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A review of wastewater sludge-to-energy generation focused on thermochemical technologies: An improved technological, economical and socio-environmental aspect

Cleaner Waste Systems, Journal Year: 2024, Volume and Issue: 7, P. 100130 - 100130

Published: Jan. 21, 2024

In response to increasing global waste generation due population growth, urbanization, and industrialization, wastewater treatment operations should shift from being solely energy consumers becoming producers by harnessing sludge (WWS). This approach holds great potential for meeting demands addressing the challenges of treatment. The recovery heat electrical WWS offers a viable solution reduce costs within WWTPs. Thermochemical technologies such as pyrolysis, gasification, combustion hold their efficiency, reaction times, retrieval capabilities. These demonstrate feasibility in terms operational costs, circular economy principles, socio-environmental impact, thanks ongoing advancements waste-to-energy research. review aims explore recovering bioenergy (biogas or syngas) generate energy, including heat, electricity, other innovative products. article provides critical comprehensive examination thermochemical technologies, taking into account technological, economic, factors. It then presents integration techniques that effectively combine anaerobic digestion with conversion enhance syngas, biogas, flue-gas energy. results this study underscore significant sludge-to-energy schemes.

Language: Английский

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Hydrochars as slow-release phosphorus fertilizers for enhancing corn and soybean growth in an agricultural soil

Carbon Research, Journal Year: 2024, Volume and Issue: 3(1)

Published: Jan. 24, 2024

Abstract Hydrochars as carbonaceous amendments rich in porous structures and nutrients can be used promising slow-release fertilizers soil health amendments. Yet, the performance of hydrochars derived from different feedstocks improving crop plant growth phosphorus (P) availability is not well understood. Here, a batch sewage sludge (SS) chicken manure (CM) (SSCs CMCs) were produced at 125 225 °C (SS125/225 CM125/225) to investigate their characteristics performances seedling two representative crops, soybean ( Glycine max ) corn Zea mays ), P an acidic agricultural comparison with triple super phosphate (TSP), conventional fertilizer. Compared CMCs, SSCs more rougher surfaces contained relatively lower contents carbon (C; 32.3–33.3%), hydrogen (H; 3.9–4.69%), potassium (K; 29.2–51 mg g −1 but higher (37.4–85.4%) nitrogen (N; 2.26–4.9%), O-containing N-containing functional groups. The impacts on showed distinct variations. application little effect (i.e., biomass, chlorophyl contents, number leaves), while CMCs significantly increased its total dry biomass by 23.2–66.2%. For corn, both 32.8–92.4% 21.8–69.7%, respectively, compared those un-amended soils. In addition, temperature (SS225 CM225), ones (SS125 CM125) 24.6% 34.9% for 44.8% 39.3% respectively. significant improvement was mainly due direct nutrient supply (particularly P) hydrochars, which supported shoot concentrations. Moreover, hydrochar led rise water soluble (WSP) levels. However, time progressed, these levels fell fixation adsorption via precipitation, electrostatic attraction, ion exchange hydrochars. Contrarily, TSP maintained persistently high WSP levels, increasing leaching risk through profile. Our results provide evidence enhance production give better insights producing functionalized P-rich chars alternative chemical maintain sustainable production. Graphical

Language: Английский

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A review on nitrogen migration mechanism during the pyrolysis of organic solid waste: DFT, ReaxFF MD and experimental study

Journal of Analytical and Applied Pyrolysis, Journal Year: 2023, Volume and Issue: 176, P. 106250 - 106250

Published: Nov. 1, 2023

Language: Английский

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Ionic liquid-catalyzed hydrothermal carbonization of sewage sludge: Effect of residence time and liquid phase circulation on hydrochar characteristic

Renewable Energy, Journal Year: 2024, Volume and Issue: 231, P. 120989 - 120989

Published: July 15, 2024

Language: Английский

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Effects of carbonization temperature and time on the characteristics of carbonized sludge

Water Science & Technology, Journal Year: 2024, Volume and Issue: 89(9), P. 2342 - 2366

Published: April 15, 2024

ABSTRACT To investigate the influence of carbonization process parameters on characteristics municipal sludge products, this study selected temperatures 300–700 °C and times 0.5–1.5 h to carbonize sludge. The results showed that with an increase in temperature time, was carbonized more completely, structure performance changed significantly. Organic matter continuously cracked, amorphous nature material reduced, its morphology transformed into increasing number regular crystalline structures, content carbon continued decrease, from initial 52.85 38.77%, while inorganic species consisting increase. conductivity reduced by 87.8%, degree conversion salt ions their residual insoluble states significant. Natural water absorption decreased 8.13 1.29%, hydrophobicity increased. dry-basis higher calorific value 8,703 3,574 kJ/kg. Heavy metals were concentrated a factor 2–3, but available state very low. provide important technological support for selection suitable conditions resource utilization.

Language: Английский

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Hydrothermal Carbonization of Coking Sludge: Migration Behavior of Heavy Metals and Magnetic Separation Performance of Hydrochar

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 114141 - 114141

Published: Sept. 15, 2024

Language: Английский

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Transforming Sludge to Energy: A Sustainable Strategy for Resource Recovery and Environmental Protection

Cleaner Waste Systems, Journal Year: 2025, Volume and Issue: unknown, P. 100298 - 100298

Published: April 1, 2025

Language: Английский

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Ni transformation and hydrochar properties during hydrothermal carbonization of cellulose

Fuel, Journal Year: 2024, Volume and Issue: 382, P. 133772 - 133772

Published: Nov. 23, 2024

Language: Английский

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Hydrothermal Carbonization of Industrial Sludge: Recent Advances, Challenges, and Perspectives

Published: Jan. 1, 2024

Language: Английский

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