Evaluating nitrogen-doping and elimination effect in peanut shell-derived composites for improving microwave absorption using PMMA as a matrix

Materials Advances, Journal Year: 2025, Volume and Issue: 6(3), P. 992 - 1005

Published: Jan. 1, 2025

We engineered nitrogen-doped and etched microwave-absorbing composites from sustainable peanut shells, combined with PMMA. These materials achieved high K-band absorption, moderate shielding, efficiency thin, cost-effective designs.

Language: Английский

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Advances in Research and Technology of Hydrothermal Carbonization: Achievements and Future Directions

Agronomy, Journal Year: 2024, Volume and Issue: 14(5), P. 955 - 955

Published: May 2, 2024

Hydrothermal carbonization (HTC) has emerged as a pivotal technology in the battle against climate change and fosters circular economies. Operating within unique reaction environment characterized by water solvent moderate temperatures at self-generated pressures, HTC efficiently converts biomass residues into valuable bio-based products. Despite HTC’s potential—from management of challenging wastes to synthesis advanced carbons implementation biorefineries—it encounters hurdles transitioning from academic exploration industrial implementation. Gaps persist, general comprehension intricacies difficulty large-scale integration with wastewater treatments, process water, absence standardized assessment techniques for Addressing these challenges demands collaboration bridge many scientific sectors touched HTC. Thus, this article reviews current state some hot topics considered crucial development: It emphasizes role cornerstone waste biorefineries, highlighting potentialities its development. In particular, it surveys fundamental research aspects, delving pathways, predictive models, analytical techniques, modifications while exploring technological applications challenges, peculiar focus on combined HTC, integration, plant energy efficiency.

Language: Английский

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Business and Market Analysis of Hydrothermal Carbonization Process: Roadmap toward Implementation

Agronomy, Journal Year: 2024, Volume and Issue: 14(3), P. 541 - 541

Published: March 7, 2024

This study assesses the status of hydrothermal carbonization (HTC) technology and identifies barriers hindering its commercial viability. Conducting a global survey among HTC companies (with total 24 surveys sent), research evaluates current landscape, challenges, future prospects large-scale operations. Furthermore, it presents detailed inventory existing facilities, illustrating geographical distribution trends in application. Most are located Europe, followed by Asia North America. With substantial participation from companies, exceeding 62% (15 companies), provides comprehensive overview diverse their business models, regulatory overall state technology. The majority this study, approximately 80%, offer services field waste management. paper also explores potential transforming management practices, carbon sequestration methodologies, development new materials. Employing thorough SWOT analysis, advocates for broader adoption HTC, emphasizing transformative capacity fostering sustainable urban, industrial, agricultural residues, promoting circular economy principles, mitigating climate change, offering robust foundation informed decision-making strategies.

Language: Английский

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Advances and challenges in humic acid production technologies from natural carbonaceous material wastes

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155521 - 155521

Published: Sept. 1, 2024

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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Maximizing the value of liquid products and minimizing carbon loss in hydrothermal processing of biomass: an evolution from carbonization to humification

Biochar, Journal Year: 2024, Volume and Issue: 6(1)

Published: May 9, 2024

Abstract Hydrothermal carbonization (HTC) converts wet biomass into hydrochar and a process liquid, but aromatic compounds in the products have been reported as roadblock for soil applications they can inhibit germination, plant growth, microbial activity. Here, we compared HTC hydrothermal humification (HTH) of cow manure digestate while varying initial alkaline content by adding KOH. HTH converted 37.5 wt% feedstock to artificial humic acids (A-HAs) found both solid twice that HTC. reduced phenolic furanic over 70% solids 90% liquids. The A-HAs resemble natural (N-HA), based on FTIR, UV–vis spectra, CHN XRD analysis. liquid possesses 60% higher total organic carbon (TOC) than Although one-third TOC be precipitated A-HA, high concentration remains which is shown mainly acids. Therefore, also evaluated liquids anaerobic biomethane production, original digestate, increased methane yield 110.3 158.6%, significant enhancement relative 17.2% increase seen with liquid. strong reduction during biogas production from indicates potential converting soluble byproducts methane, maintaining levels product. Graphical

Language: Английский

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Application of Alkaline Deep Eutectic Solvents as a Green Alternative to the Traditional Extractants for the Isolation of Humic Substances

ACS Omega, Journal Year: 2024, Volume and Issue: 9(23), P. 25265 - 25276

Published: May 30, 2024

The presented study focused on the possibility of using alkaline deep eutectic solvents (ADESs) as green extractants for isolation humic substances (HSs) from peat and lignite in a process intensified by ultrasound. For this purpose, extraction procedure was statistically described basis Box–Behnken design, carboxyl group content obtained products optimized due to ADES composition, ultrasound intensity, time. optimal conditions, experimental isolated equal 3.71 2.96 mmol g–1 HSs extracted lignite, respectively. These values were similar results reference samples, which 0.1 M NaOH, well acids sodium humates purchased Sigma-Aldrich. qualitative assessment based spectroscopic methods, including FTIR, 1H NMR, UV–vis. analyses carried out samples revealed characteristic structures HSs, components aliphatic chains aromatic core carboxyl, ester, amino groups. Simultaneously, spectral ratio E280/E472 showed significant differences between relative amount lignin tested.

Language: Английский

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Conversion mechanism of pyrolysis humic substances of cotton stalks and carbide slag and its excellent repair performance in Cd-contaminated soil

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153147 - 153147

Published: June 14, 2024

Language: Английский

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Unveiling the intensification role of circulating hydrothermal carbonization: A sustainable way for humic acids production from Chinese medicine residues

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 226, P. 120695 - 120695

Published: Feb. 13, 2025

Language: Английский

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Simple synthesis and excellent performance of the cow dung–based biodegradable liquid mulch for sustainable agriculture

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121270 - 121270

Published: March 1, 2025

Language: Английский

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