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

Environmental Geochemistry and Health, Год журнала: 2024, Номер 46(3)

Опубликована: Фев. 17, 2024

Язык: 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, Год журнала: 2024, Номер 16(10), С. 4272 - 4284

Опубликована: Май 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

Язык: 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, Год журнала: 2025, Номер 224, С. 120431 - 120431

Опубликована: Янв. 5, 2025

Язык: 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, Год журнала: 2025, Номер unknown, С. 115732 - 115732

Опубликована: Фев. 1, 2025

Язык: Английский

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

Bioresource Technology, Год журнала: 2024, Номер 398, С. 130515 - 130515

Опубликована: Март 3, 2024

Язык: Английский

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

Water, Год журнала: 2024, Номер 16(6), С. 873 - 873

Опубликована: Март 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.

Язык: 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

Опубликована: Янв. 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.

Язык: Английский

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

Biomass Conversion and Biorefinery, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Язык: 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, Год журнала: 2025, Номер 236(2)

Опубликована: Янв. 25, 2025

Язык: 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, Год журнала: 2025, Номер 383, С. 125462 - 125462

Опубликована: Апрель 21, 2025

Язык: Английский

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