Co-Hydrothermal Carbonization of Sawdust and Sewage Sludge: Assessing the Potential of the Hydrochar as an Adsorbent and the Ecotoxicity of the Process Water

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(3), P. 1052 - 1052

Published: Jan. 21, 2025

Hydrothermal carbonization (HTC) is a promising thermochemical process to convert residues into hydrochar. While conventional HTC utilizes one type of residue as raw material only, Co-HTC generally combines two. By mixing dry and wet wastes, can advantageously avoid water addition. Therefore, this work investigated the potential hydrochar derived from sawdust non-dewatered sewage sludge dye (methylene blue) adsorbent evaluated toxicity resulting (PW) on Daphnia magna. Three hydrochars were produced by at 180, 215, 250 °C named H-180, H-215, H-250, respectively. For methylene blue adsorption, H-180 H-215 had better performance than H-250. Both presented maximum adsorption capacity approximately 70 mg·g−1, which was superior compared with other in literature. Moreover, removal percentage obtained remained satisfactory even after five cycles. Regarding toxicological assays PWs, raising temperature increased variety substances PW composition, higher D. The EC50 values PW-180, PW-215, PW-250 1.13%, 0.97%, 0.51%, This highlights importance searching for treatment valorization PW. Instead viewing by-product an effluent be treated disposed of, it imperative assess PWs obtaining added-value products.

Language: Английский

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Morphologic Features and Thermal Characteristics of Nine Cotton Biomass Byproducts

Biomass, Journal Year: 2025, Volume and Issue: 5(1), P. 12 - 12

Published: Feb. 25, 2025

Cotton biomass residues consist of an important portion the agricultural byproducts. In this work, we systematically analyzed and compared morphology thermal properties nine cotton The unique tubular and/or porous some samples (e.g., main stems, branch petioles) implied their structural advantage in development electric supercapacitors pollutant absorbents. higher heating values ranged between 17 20 MJ kg−1, than other common byproducts rice husk sugarcane bagasse). moisture content showed a positive correlation (p > 0.05) to dehydration temperature differential scanning calorimetric plots. residual char after thermogravimetric analysis could be separated into high-yield cluster (34.4–26.6%) leaf blades, bracts/peduncles, burrs, defatted meal, petioles, low-yield (20.5–13.6%) gin waste, cottonseed hull. These observations data are useful for better understanding fundamental chemistry Growing knowledge is improving recycling strategies may shed light on exploration new value-added products or applications from these circular economy with sustainable agriculture.

Language: Английский

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The effects of feedstock types and their properties on hydrothermal carbonisation and resulting hydrochar: A review

Current Opinion in Green and Sustainable Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 101024 - 101024

Published: March 1, 2025

Language: Английский

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Optimization of Hydrothermal Processing for Banana Peel Waste: Enhancing Solid Fuel Characteristics as a Renewable Energy Source

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104831 - 104831

Published: April 1, 2025

Language: Английский

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