Controllable integration of nano zero-valent iron into MOFs with different structures for the purification of hexavalent chromium-contaminated water: Combined insights of scavenging performance and potential mechanism investigations

The Science of The Total Environment, Год журнала: 2024, Номер 935, С. 173395 - 173395

Опубликована: Май 24, 2024

Язык: Английский

---

Remediation of Polycyclic Aromatic Hydrocarbon-Contaminated Soil by Using Activated Persulfate with Carbonylated Activated Carbon Supported Nanoscale Zero-Valent Iron

Catalysts, Год журнала: 2024, Номер 14(5), С. 311 - 311

Опубликована: Май 8, 2024

Soil contamination by polycyclic aromatic hydrocarbons (PAHs) has been an environmental issue worldwide, which aggravates the ecological risks faced animals, plants, and humans. In this work, composites of nanoscale zero-valent iron supported on carbonylated activated carbon (nZVI-CAC) were prepared applied to activate persulfate (PS) for degradation PAHs in contaminated soil. The nZVI-CAC catalyst was characterized scanning electron microscopy (SEM), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), photoelectron (XPS). It found that PS/nZVI-CAC system superior phenanthrene (PHE) oxidation than other processes using different oxidants (PS/nZVI-CAC > PMS/nZVI-CAC H2O2/nZVI-CAC) it also efficient six with structures molar weights. Under optimal conditions, lowest highest efficiencies selected 60.8% 90.7%, respectively. Active SO4−• HO• be generated surface catalysts, dominant PHE through quenching experiments. results demonstrated heterogeneous process PS effective PAH degradation, could provide a theoretical basis remediation PAH-polluted

Язык: Английский

---

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

---

Influences of Biochar on Phytoremediation Potential of Heavy Metals Contaminated Soils

Опубликована: Янв. 1, 2025

Язык: Английский

---

Optimizing extraction conditions to enhance the humification and soil remediation potential of compost-derived dissolved organic matter

Journal of Environmental Management, Год журнала: 2025, Номер 381, С. 125349 - 125349

Опубликована: Апрель 14, 2025

Язык: Английский

---

Functional UiO-66 calcium alginate spheres for efficient remediation of lead and cadmium contaminated soil based on adsorption and acetic acid recycling: Mechanism, optimization and risk assessment

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162901 - 162901

Опубликована: Апрель 1, 2025

Язык: Английский

---

Electrokinetic Remediation of Chromium-Contaminated Soils: The Potential for Advanced Materials in Three-Dimensional EKR Approaches

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116774 - 116774

Опубликована: Апрель 1, 2025

Язык: Английский

---

MGDA-assisted plant washing agent for improving the removal of Cd and Cu from farmland soils

Environmental Pollution, Год журнала: 2024, Номер 361, С. 124809 - 124809

Опубликована: Авг. 24, 2024

Язык: Английский

---

Bacterial Bisorption as an Approach for the Bioremediation of Chromium Contaminated Soils: An Overview

UMYU Journal of Microbiology Research (UJMR), Год журнала: 2024, Номер unknown, С. 374 - 387

Опубликована: Июнь 30, 2024

Study’s Novelty/Excerpt This study presents comprehensive overview of the roles various bacterial genera, including Alcaligens, Achromobacter, and Bacillus, in biosorption chromium from contaminated soils, highlighting specific factors influencing efficiency. It uniquely addresses optimization environmental conditions such as pH, temperature, nutrient availability to enhance large-scale processes, bridging gaps noted previous literature regarding scalability biosorption. Additionally, manuscript underscores necessity for further research biotechnology molecular engineering fully harness potential remediation, presenting a forward-looking perspective on advancing this bioremediation strategy. Full Abstract Chromium possesses detrimental effects health both plants animals. Biosorption is process where biological materials (bacteria, fungi, algae, or agricultural waste) are used remove pollutants sites. Conventional methods remediating heavy metal-contaminated excavation chemical treatment, expensive disruptive, making them less desirable. Factors efficiency promising approaches involving bacteria metals Chromium, lead, nickel, cadmium, arsenic, etc., soil. Some genera involved include Acinetobacter, Alteromonas, Arthrobacter, Burkholderia, Enterobacter, Flavobacterium, Pseudomonas. These can adsorb biotransform into toxic forms. concentration, surface compositions, metal ion characteristics, soil composition. Challenges associated with using biosorption, outlined literature, slowness fact that it may not be suitable application, even though many other authors have proven its applicability large scale. Also, key quality needed biosorbent must tolerating metals. Another area focus current optimizing conditions, availability, achieve more efficient at larger highlighted strategy Conclusively, has great use Chromium- realize potential, especially engineering.

Язык: Английский

---

Activation of Peroxymonosulfate by Fe, O Co-Embedded Biochar for the Degradation of Tetracycline: Performance and Mechanisms

Catalysts, Год журнала: 2024, Номер 14(9), С. 556 - 556

Опубликована: Авг. 24, 2024

In recent years, pollution stemming from pharmaceuticals has garnered widespread global concern, which exacerbates the ecological risk to both surface and groundwater. current study, Fe O co-embedded biochar (Fe-O-BC) was synthesized through a one-step pyrolysis procedure with corncob serving as feedstock. The fabricated Fe-O-BC catalysts were characterized by various techniques employed for activation of peroxymonosulfate (PMS) degrade tetracycline (TC). TC rapidly degraded within 40 min, degradation rate 0.1225 min−1, much higher than those O-BC/PMS (0.0228 min−1) Fe-BC/PMS (0.0271 under same conditions. effects PMS dosage, dose, initial pH value coexisting anions investigated. Finally, mechanism oxidation in catalytic system implored experiments determining active sites radical scavenging experiments. C-O-Fe bond catalyst confirmed be dominant accelerating degradation. Free diffused HO•, surface-bound HO• SO4•− O2•−participated reaction absorbed SO4•−, predominantly contributed This study provides an efficient green alternative pharmaceutical wastewater treatment co-doped catalyst-induced heterogeneous process.

Язык: Английский

---