From Bulk to Nano: Formation, Features, and Functions of Nano-Black Carbon in Biogeochemical Processes

Environmental Science & Technology, Год журнала: 2024, Номер 58(36), С. 15910 - 15925

Опубликована: Авг. 27, 2024

Globally increasing wildfires and widespread applications of biochar have led to a growing amount black carbon (BC) entering terrestrial ecosystems. The significance BC in sequestration, environmental remediation, the agricultural industry has long been recognized. However, formation, features, functions nanosized BC, which is one most active fractions continuum during global climate change, are poorly understood. This review highlights surface reactivity (sorption, redox, heteroaggregation), biotic, abiotic transformations nano-BC, its major differences compared other engineered nanomaterials. Potential nano-BC including suspending agent, soil amendment, nanofertilizer elucidated based on unique properties functions. Future studies suggested develop more reliable detection techniques provide multidimensional information samples, explore critical role promoting planetary health from perspective, extend multifield with lower footprint but higher efficiency.

Язык: Английский

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The Effect of Redox Fluctuation on Carbon Mineralization in Riparian Soil: An Analysis of the Hotspot Zone of Reactive Oxygen Species Production

Water Research, Год журнала: 2024, Номер 265, С. 122294 - 122294

Опубликована: Авг. 18, 2024

Язык: Английский

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Enhancing the production of reactive oxygen species in the rhizosphere to promote contaminants degradation in sediments by electrically strengthening microbial extracellular electron transfer

Journal of Hazardous Materials, Год журнала: 2024, Номер 479, С. 135644 - 135644

Опубликована: Авг. 24, 2024

Язык: Английский

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Phosphate-Induced Acidic Microenvironment for Improved Contaminant Removal during FeS Oxygenation

Environmental Science & Technology, Год журнала: 2024, Номер 58(44), С. 19883 - 19892

Опубликована: Окт. 23, 2024

The coexistence of mackinawite (FeS) and phosphate is widely observed in natural systems. However, the underlying mechanism regarding how influences environmental behavior FeS, especially during FeS oxygenation aquatic systems, remains its fancy. This study for first time reported that presence phosphate, even at a low concentration 0.3 mM, significantly promoted FeS-mediated O

Язык: Английский

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Novel oxidant-free VUV/Fe2+/oxalate process for high-efficiency removal of norfloxacin: Oxidation performance and synergistic mechanism

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157779 - 157779

Опубликована: Ноя. 1, 2024

Язык: Английский

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Critical Roles of Low-Molecular-Weight Organic Acid in Enhancing Hydroxyl Radical Production by Ferrous Oxidation on γ-Al2O3 Mineral Surface

Water Research, Год журнала: 2024, Номер 261, С. 122052 - 122052

Опубликована: Июль 5, 2024

Язык: Английский

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Quasi-complexation reaction triggered by O2 activation of activated carbon: An overlooked mechanism and its applications

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116717 - 116717

Опубликована: Апрель 1, 2025

Язык: Английский

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New Pathway Mediated by Humic Acid Facilitates Long-Distance Hydroxyl Radical Production during Crystalline Iron Mineral Oxygenation

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Hydroxyl radicals (•OH) are extensively produced from crystalline iron minerals under redox oscillation, during which their oxidizing impact on pollutant dynamics is often limited by low transportation. While natural organic matter exists as a ubiquitous mediator, how it regulates the distance scale of •OH production in heterogeneous system remains poorly understood. This study, for first time, reports an unrecognized route mediated humic acid (HA) extending spatial range oxygenation reduced hematite (rHem). The results showed that HA facilitated redistribution surface to solution, posing inverse impacts oxidation efficacies pollutants with varying accessibilities. It was difficult explain enhanced free using electron shuttling quinones or dissolved Fe-HA complexes. Comprehensive evidence demonstrated adsorbed preferentially consumed surface-bound trigger solid-to-liquid propagation carbon-centered (CCR•), dominantly promoting formation secondary far surface. Reactive-transport simulation and situ fluorescence visualized interfacial centimeter-scale long-range CCR•. Fourier transform ion cyclotron resonance mass spectrometry verified role decarboxylation CCR• generation. These findings offer new insights into environmental fate cycling engineered systems, including those matter.

Язык: Английский

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Constructing Cu-Mn bimetallic synergistic sites in 2D metal-organic framework nanosheets to induce polarized charge distribution: Electronic structure transformation and evaluation of fenton-like performance

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129488 - 129488

Опубликована: Сен. 6, 2024

Язык: Английский

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Unravelling structural features of small molecules for photochemical transformation of environmental contaminants

Water Research, Год журнала: 2024, Номер 261, С. 122015 - 122015

Опубликована: Июнь 28, 2024

Язык: Английский

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