Mechanisms of adsorption and functionalization of biochar for pesticides: A review

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 272, С. 116019 - 116019

Опубликована: Янв. 30, 2024

Agricultural production relies heavily on pesticides. However, factors like inefficient application, pesticide resistance, and environmental conditions reduce their effective utilization in agriculture. Subsequently, pesticides transfer into the soil, adversely affecting its physicochemical properties, microbial populations, enzyme activities. Different interacting can lead to combined toxicity, posing risks non-target organisms, biodiversity, organism-environment interactions. Pesticide exposure may cause both acute chronic effects human health. Biochar, with high specific surface area porosity, offers numerous adsorption sites. Its stability, eco-friendliness, superior capabilities render it an excellent choice. As a versatile material, biochar finds use agriculture, management, industry, energy, medicine. Added helps absorb or degrade contaminated areas, enhancing soil activity. Current research primarily focuses produced via direct pyrolysis for adsorption. Studies functionalized this purpose are relatively scarce. This review examines biochar's absorption characteristics, formation mechanisms, impact, delves functionalization methods, prospects limitations.

Язык: Английский

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Heterogeneous Fenton-like Photocatalytic Process towards the Eradication of Tetracycline under UV Irradiation: Mechanism Elucidation and Environmental Risk Analysis

Water, Год журнала: 2023, Номер 15(13), С. 2336 - 2336

Опубликована: Июнь 23, 2023

The problem of the deep elimination antibiotics in environmental bodies is exceptionally warranted. In this work, a ternary nanocomposite FeNi3/SiO2/CuS (FSC) was fabricated and then integrated with UV light irradiation hydrogen peroxide as heterogeneous Fenton-like photocatalytic system for decomposition tetracycline (TC) from aqueous media. During process, various influencing parameters such pH, catalyst dosage, initial content TC, (H2O2) dose, operating time were explored. At optimized circumstances, i.e., 5 10 mg/L TC concentration, 150 H2O2 200 min degradation time, proportion 96%. results capture agent tests clarified that hydroxyl radical (HO•) played predominant role decontamination TC. Moreover, elevated contact H2O2, efficiency increased significantly. Additionally, findings stability reusability experiments showed percentage removal decreased by only about 5% after six cycles. Furthermore, mechanism over FSC photocatalyst elucidated. Eventually, non-carcinogenic risk analysis surface water sample carried out using multiple processes first time. These outcomes obtained study validate coupling oxidation facilitates great variety pharmaceutical contaminants

Язык: Английский

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Removal of tetracycline from water by adsorption with biochar: A review

Journal of Water Process Engineering, Год журнала: 2024, Номер 60, С. 105215 - 105215

Опубликована: Апрель 1, 2024

Язык: Английский

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Degradation of tetracycline by nitrogen-doped biochar as a peroxydisulfate activator: Nitrogen doping pattern and non-radical mechanism

Sustainable Horizons, Год журнала: 2024, Номер 10, С. 100091 - 100091

Опубликована: Янв. 24, 2024

Recently, nitrogen-doped biochar (NBC) has attracted a great deal of attention in the field advanced oxidation processes (AOPs) for treatment various pollutants. However, effect nitrogen doping method on catalyst efficiency NBC not been fully understood. In this study, was prepared using two different methods: carbonization urea mixed with maize straw (NBC1) and pristine obtained from (NBC2). Catalytic degradation tetracycline (TC) presence peroxydisulfate (PDS) examined, process factors reaction mechanism were explored. Characterizations revealed that NBC1 had higher content (6.86 %) carbon defects compared to NBC2. Under optimum conditions 0.4 g L−1, PDS 3 mM, TC 15 mg solution pH 4.6, reached over 86.55 % within 120 min, which than NBC2 (57.10 %). Moreover, catalytic system showed resistance anions dissolved organic matter, by remained 82.47 after secondary carbonization. Radical quenching electron spin resonance spectroscopy verified co-existence ·OH, SO4·−, O2·−, 1O2 system, made significant contribution degradation. More importantly, quantitative structure-activity relationships (QSAR) density functional theory (DFT) calculations displayed graphitic N, as primary active site, played an important role activation This work provides evidence preparation efficient biochar, elucidation mechanism, its feasibility wastewater treatment.

Язык: Английский

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Standardization and micromechanistic study of tetracycline adsorption by biochar

Biochar, Год журнала: 2024, Номер 6(1)

Опубликована: Фев. 6, 2024

Abstract Modification serves as an excellent approach to enhancing the adsorption performance of biochar for tetracycline. Selective modification further allows attainment materials that are not only more efficient but also cost-effective. However, key structural factors influencing tetracycline by remain unclear at present, hindering effective guidance strategies. This study established relationship between carbonization degree and capacity, constructed a standardized microscopic model tetracycline, explored potential reaction mechanisms. The results indicated with increases in carbonization, capacity increased from 16.08 mg L −1 98.35 . energy exhibited strong correlation aromatic condensation p ≤ 0.01, linear (r 2 ≥ 0.94). For low degrees, was primarily driven chemical bonds (69.21%) complemented electrostatic interactions, weak van der Waals forces or π-π interactions. high synergistic effects hydrogen bonding, forces, interactions determined on (91.1%). Additionally, larger carbon clusters resulted stronger stable Furthermore, carboxyl-functionalized highly carbonized displayed highest − 1.8370 eV through suggests structure is crucial Graphical

Язык: Английский

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Green synthesis of highly pyrrolic nitrogen-doped biochar for enhanced tetracycline degradation: New insights from endogenous mineral components and organic nitrogen synergy

Journal of Cleaner Production, Год журнала: 2024, Номер 444, С. 141177 - 141177

Опубликована: Фев. 12, 2024

Язык: Английский

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Lanthanum-doped magnetic biochar activating persulfate in the degradation of florfenicol

The Science of The Total Environment, Год журнала: 2024, Номер 916, С. 170312 - 170312

Опубликована: Янв. 24, 2024

Язык: Английский

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Strong adsorption of tetracycline on carbon blacks: An in-depth study of the adsorption mechanism

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106784 - 106784

Опубликована: Янв. 5, 2025

Язык: Английский

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Reviewing the role of biochar in paddy soils: An agricultural and environmental perspective

Ecotoxicology and Environmental Safety, Год журнала: 2023, Номер 263, С. 115228 - 115228

Опубликована: Июль 7, 2023

The main challenge of the twenty-first century is to find a balance between environmental sustainability and crop productivity in world with rapidly growing population. Soil health backbone resilient environment stable food production systems. In recent years, use biochar bind nutrients, sorption pollutants, increase has gained popularity. This article reviews key studies on impacts benefits its unique physicochemical features paddy soils. review provides critical information role properties carbon nitrogen cycling, plant growth regulation, microbial activities. Biochar improves soil soils through increasing activities nutrient availability, accelerating cycle, reducing availability heavy metals micropollutants. For example, study showed that application maximum 40 t ha-1 from rice husks prior cultivation (at high temperature slow pyrolysis) increases utilization grain yield by 40%. can be used minimize chemical fertilizers ensure sustainable production.

Язык: Английский

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Synthesis of cellulose nanofibrils modified with carbon dots-graft-polyacrylamide/ZIF-8 composite hydrogel for simultaneous adsorption and detection of tetracycline

Chemical Engineering Journal, Год журнала: 2023, Номер 470, С. 144087 - 144087

Опубликована: Июнь 12, 2023

Язык: Английский

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