Adsorption behavior of lead, cadmium, and arsenic on manganese-modified biochar: competition and promotion

Environmental Geochemistry and Health, Journal Year: 2024, Volume and Issue: 46(3)

Published: Feb. 17, 2024

Language: Английский

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Exploring an eco-friendly approach to improve soil tensile behavior and cracking resistance

Journal of Rock Mechanics and Geotechnical Engineering, Journal Year: 2024, Volume and Issue: 16(10), P. 4272 - 4284

Published: May 28, 2024

Soil tensile strength is a critical parameter governing the initiation and propagation of cracking. This study proposes an eco-friendly approach to improve behavior crack resistance clayey soils. To validate feasibility efficacy proposed approach, direct tests were employed determine compacted soil with different W-OH treatment concentrations water contents. Desiccation also performed evaluate effectiveness in enhancing cracking resistance. During this period, effects concentration content on properties, suction microstructure investigated. The reveal that has significant impact failure mode soil, which not only effectively enhances displacement, but changes brittle into more ductile quasi-brittle behavior. measurements mercury intrusion porosimetry (MIP) show can slightly reduce by affecting skeleton structure increasing macropores. Combined microstructural analysis, it becomes evident improvement through mainly attributed gel's ability provide additional binding force for bridging encapsulating particles. Moreover, desiccation demonstrate significantly or even inhibit formation With increase concentration, surface ratio total length are reduced. fundamental understanding eco-polymer impacts mechanical properties provides valuable insight their potential application improving

Language: Английский

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Impact of low-temperature pyrolysis on ash and physicochemical properties of straw biochar: Multivariate analysis and implications for agricultural and environmental use

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 224, P. 120431 - 120431

Published: Jan. 5, 2025

Language: Английский

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Effect of biochar addition on antibiotic and heavy metal resistance genes during sewage sludge composting

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115732 - 115732

Published: Feb. 1, 2025

Language: Английский

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Preparation of iron oxide-modified digestate biochar and effect on anaerobic digestion of kitchen waste

Bioresource Technology, Journal Year: 2024, Volume and Issue: 398, P. 130515 - 130515

Published: March 3, 2024

Language: Английский

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Synthesis of MgO-Coated Canna Biochar and Its Application in the Treatment of Wastewater Containing Phosphorus

Water, Journal Year: 2024, Volume and Issue: 16(6), P. 873 - 873

Published: March 18, 2024

In order to treat phosphorus-containing wastewater and realize the resource utilization of wetland plant residues, biochar was prepared by pyrolysis canna aquatic waste at 700 °C, adsorption characteristics phosphorus MgO-modified (MBC) were explored. The main results are as follows: capacity MBC eight times that unmodified (BC), up 244 mg/g. isothermal data consistent with Langmuir equation, which indicates monolayer adsorption. functional groups changed little before after modification, but a new diffraction peak appeared modification. Compared standard card, it suggested there MgO crystals higher purity. SEM images showed BC had smooth surface, an obvious pore structure, thin wall, while rough surface layered can provide more sites for phosphate addition, XPS analysis Mg3(PO4)2 on mechanism is important substance adsorb phosphorus, electrostatic complex precipitation play key roles. test verify removal actual MBC, found rates 2.06 mg/L 199.8 high 93.4–93.9% 99.2–99.3%, respectively. be used efficient adsorbent removal.

Language: Английский

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Synthesis of Bi-Functional Biochar Utilizing Incinerated Sewage Sludge Ash and Biomass: Improved Nutrient Release and Heavy Metal Adsorption Efficiency

Published: Jan. 1, 2025

Phosphorus (P) is vital for plant growth and abundantly found in incinerated sewage sludge ash (ISSA). However, utilizing this P-rich ISSA efficiently as fertilizer remains a key challenge. This study first successfully synthesized bi-functional biochar-based using acid-extracted shrimp shell through pyrolysis. We systematically examined how impregnation methods, pyrolysis temperatures, biomass types influenced available phosphorus (AP) release, with further optimization Cu(II) adsorption performance mechanism. AP release results indicated that the pre-pyrolysis impregnated biochar prepared at 350 °C (Im-SS350-pre) had maximum (51.68 mg P/g). demonstrated Im-SS350-pre achieved capacity of 66.86 mg/g, due to its highly effective reactive sites. was three times high produced without (25.08 mg/g). For XRD analysis confirmed acid leaching broke metal-P bonds, releasing Ca‒P Mg‒P, while promoted formation phosphate concentration. adsorption, FTIR, XRD, XPS analyses identified mechanisms such coordination, co-precipitation, functional group complexation, Cu‒π interactions. highlights dual functionality providing promising approach recovery copper remediation biomass.

Language: Английский

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Environmental leaching of biochar: a full factorial analysis of composition and redundancy

Biomass Conversion and Biorefinery, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Language: Английский

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Efficient Removal of Cr(VI) by Bamboo-Derived Biochar Supported Nano Zero-Valent Iron: Insights into Performance and Mechanism

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(2)

Published: Jan. 25, 2025

Language: Английский

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The livestock and poultry farming impact on antibiotic pollution in China and the potential of nitrogen-doped biochar for remediation

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 383, P. 125462 - 125462

Published: April 21, 2025

Language: Английский

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