Activation of peroxymonosulfate by single atom Co-N-C catalysts for high-efficient removal of chloroquine phosphate via non-radical pathways: Electron-transfer mechanism

Chemical Engineering Journal, Год журнала: 2021, Номер 429, С. 132245 - 132245

Опубликована: Сен. 3, 2021

Язык: Английский

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Production and characterization of biochar produced from slow pyrolysis of pigeon pea stalk and bamboo

Cleaner Engineering and Technology, Год журнала: 2021, Номер 3, С. 100101 - 100101

Опубликована: Апрель 28, 2021

Sustainable management of agricultural residues has gained momentum worldwide as an environmentally benign process. This study focused on the impact pyrolysis temperature biochars' physicochemical properties derived from two residue materials (pigeon pea stalk and bamboo) pyrolysed at different temperatures (400, 500 600 °C) for a holding time 1 h. The bamboo pigeon were characterized, well their resulting biochar samples (proximate, ultimate, SEM, BET, FTIR XRD). For both biomass materials, composition had great influence yield properties. More mass fraction lignin in yields more (32.20–27.00%) compared to (29.80–21.70%) same temperature. fixed carbon biochars was observed be range 81.85–85.68%, which much higher than biomass. 76.17–88.43%. with highest found °C biomass-derived biochars. Biochars low atomic ratio H/C (0.03–0.06) O/C (0.09–0.25) confirmed highly carbonized, aromatized hydrophobic nature. BET surface area ranged 16.90 307.10 m2 g−1, obtained °C. At temperature, total pore volume (0.057–0.18 cm3 g−1) respect alkalinity all increased tandem 7.25–10.14. acidic polar functional groups successively removed resulted well-organized layered enriched sylvite, calcite, silicates Mg, Mn, Ca signifying its heterogonous characteristics ash content.

Язык: Английский

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Heterojunction photocatalysts for the removal of nitrophenol: A systematic review

Chemosphere, Год журнала: 2022, Номер 310, С. 136853 - 136853

Опубликована: Окт. 11, 2022

Язык: Английский

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Biochar-based materials in environmental pollutant elimination, H2 production and CO2 capture applications

Biochar, Год журнала: 2023, Номер 5(1)

Опубликована: Июль 20, 2023

Abstract Biochar and biochar-based materials have been studied extensively in multidisciplinary areas because of their outstanding physicochemical properties. In this review article, biochar the removal environmental pollutants, hydrogen generation carbon dioxide capture were summarized compared. The interaction mechanisms discussed from experimental results characterization analysis. high porous structures, active surface sites, (co)doping single metals/nonmetals, incorporation metal oxides or other improved activity applications. However, there are still some challenges such as: (1) fact that H 2 with selectivity produced syngas to meet real application requirement industrial is main challenge production; (2) selective CO stability, adsorption capacity recyclability at low-cost should be considered focused on; (3) sorption-(photo)degradation organic chemicals; (4) sorption-reduction-extraction/solidification metals/radionuclides efficient methods for elimination pollutants. end, perspectives, possible techniques materials’ future described. Graphical

Язык: Английский

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Adsorption and catalytic degradation of organic contaminants by biochar: Overlooked role of biochar’s particle size

Journal of Hazardous Materials, Год журнала: 2021, Номер 422, С. 126928 - 126928

Опубликована: Авг. 17, 2021

Язык: Английский

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Activation of persulfate by green nano-zero-valent iron-loaded biochar for the removal of p-nitrophenol: Performance, mechanism and variables effects

Journal of Hazardous Materials, Год журнала: 2021, Номер 417, С. 126106 - 126106

Опубликована: Май 14, 2021

Язык: Английский

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Removal of phenols and dyes from aqueous solutions using graphene and graphene composite adsorption: A review

Journal of environmental chemical engineering, Год журнала: 2021, Номер 9(5), С. 105858 - 105858

Опубликована: Июнь 24, 2021

In recent years, there has been growing awareness that by 2050, many countries will experience critical issues related to water scarcity. The need recycle/reuse wastewater after pollution treatment is a major concern worldwide for ensuring security at the national level. Treatment technologies remove pollutants, namely, heavy metals, anionic impurities and vast range of organic compounds, have received substantial attention from scientific community. Water resource increasing due an world population its corresponding activities. Amongst different used decrease pollutant levels in water, adsorption technology highly effective even low concentrations. Carbonaceous materials their composites widely unique surface properties high capacities, but better adsorbents with higher capacities faster uptake are still needed. Recently, development graphene-based adsorbents, active surfaces large areas, created much excitement. Therefore, updated review needed summarize this graphene research. This provides summary literature field adsorptive removal organics focus on phenols dyestuffs. synthesis methods, characterization techniques, behaviors, experimental parameters, mechanisms, thermodynamics, effect coexisting ions regeneration–desorption processes considered. Finally, research challenges knowledge gaps – limited regeneration solute recovery studies, behavior mixed pollutants effluents, designing graphenic specific system economic analyses - discussed.

Язык: Английский

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Biochar and activated carbon derivatives of lignocellulosic fibers towards adsorptive removal of pollutants from aqueous systems: Critical study and future insight

Separation and Purification Technology, Год журнала: 2021, Номер 274, С. 119062 - 119062

Опубликована: Июнь 6, 2021

Язык: Английский

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Key roles of electron cloud density and configuration in the adsorption of sulfonamide antibiotics on carbonaceous materials: Molecular dynamics and quantum chemical investigations

Applied Surface Science, Год журнала: 2020, Номер 536, С. 147757 - 147757

Опубликована: Сен. 6, 2020

Язык: Английский

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Sorption of organic contaminants by biochars with multiple porous structures: Experiments and molecular dynamics simulations mediated by three-dimensional models

Journal of Hazardous Materials, Год журнала: 2023, Номер 458, С. 131953 - 131953

Опубликована: Июнь 28, 2023

Язык: Английский

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