Опубликована: Янв. 1, 2023
Язык: Английский
Molecules, Год журнала: 2024, Номер 29(2), С. 418 - 418
Опубликована: Янв. 15, 2024
In the present investigation of copper ferrite, a CuFe2O4 nanocomposite adsorbent was synthesized using sol–gel method, and its relevance in adsorptive elimination toxic Congo red (CR) aqueous phase examined. A variety structural methods were used to analyze nanocomposite; as-synthesized had agglomerated clusters with porous, irregular, rough surface that could be seen FE-SEM, it also contained carbon (23.47%), oxygen (44.31%), (10.21%), iron (22.01%) elemental composition by weight. Experiments designed achieve most optimized system through utilization central composite design (CCD). The highest uptake CR dye at equilibrium occurred when initial pH value 5.5, adsorbate concentration 125 mg/L, dosage 3.5 g/L. Kinetic studies conducted, they showed adsorption process followed pseudo-second-order (PSO) model (regression coefficient, R2 = 0.9998), suggesting chemisorption mechanism, overall reaction rate governed both film pore diffusion molecules. which molecules taken up onto particle revealed interactions involving electrostatic forces, hydrogen bonding, filling. According isotherm studies, data exhibited strong agreement Langmuir (R2 0.9989), demonstrating maximum monolayer capacity (qmax) 64.72 mg/g 6 302 K. Considering obtained negative ΔG positive ΔHads ΔSads values across all tested temperatures thermodynamic investigations, confirmed characterized as endothermic, spontaneous, feasible, an increased level randomness. developed this study is anticipated find extensive application effluent treatment, owing excellent reusability remarkable capability effectively remove comparison other adsorbents.
Язык: Английский
Процитировано
9
Nanomaterials, Год журнала: 2024, Номер 14(12), С. 1037 - 1037
Опубликована: Июнь 16, 2024
With the processes of industrialization and urbanization, heavy metal ion pollution has become a thorny problem in water systems. Among various technologies developed for removal ions, adsorption method is widely studied by researchers nanomaterials with good performances have been prepared during past decades. In this paper, variety novel excellent Pb(II) Cu(II) reported recent years are reviewed, such as carbon-based materials, clay mineral zero-valent iron their derivatives, MOFs, nanocomposites, etc. The extremely high capacity, selectivity particular nanostructures summarized introduced, along advantages disadvantages. And, some future research priorities treatment wastewater also prospected.
Язык: Английский
Процитировано
9
Molecules, Год журнала: 2023, Номер 28(11), С. 4526 - 4526
Опубликована: Июнь 2, 2023
The toxicity of dyes has a long-lasting negative impact on aquatic life. Adsorption is an inexpensive, simple, and straightforward technique for eliminating pollutants. One the challenges facing adsorption that it hard to collect adsorbents after adsorption. Adding magnetic property makes easier adsorbents. current work reports synthesis iron oxide-hydrochar composite (FHC) oxide-activated hydrochar (FAC) through microwave-assisted hydrothermal carbonization (MHC) technique, which known as timesaving energy-efficient method. synthesized composites were characterized using various techniques, such FT-IR, XRD, SEM, TEM, N2 isotherm. prepared applied in cationic methylene blue dye (MB). formed crystalline oxide amorphous hydrochar, with porous structure rod-like oxide. pH point zero charge (pHpzc) 5.3 5.6, respectively. Approximately 556 mg 50 MB was adsorbed surface 1 g FHC FAC, respectively, according maximum capacity calculated Langmuir model.
Язык: Английский
Процитировано
15
Energies, Год журнала: 2024, Номер 17(11), С. 2698 - 2698
Опубликована: Июнь 2, 2024
In this investigation, Zn/Al carbonate layered double hydroxide (ZAC-LDH) and its derived material on calcination were synthesized for removing the anionic azo dye Congo red (CR) from wastewater. Numerous factors methodically investigated, including temperature, adsorbent dosage, pH, starting Dye Concentration (DC), contact time. The CR elimination percentage dropped as initial DC increased 25 mg/L to 100 at 30 °C uncalcined LDH, 97.96% 89.25% calcined LDH. pH analysis indicates that highest level of removal was recorded within acidic range through electrostatic attraction mechanism. sorption kinetics results demonstrated pseudo-second-order kinetic model exhibited a stronger fit both LDH CZA-LDH, with maximum correlation coefficient value. Van’t Hoff plots indicate spontaneous nature physisorption process negative ΔG° (<−20 kJ/mol), while endothermic adsorption positive ΔH°. X-ray diffraction reveals significant intercalation molecules, prior following adsorption, showcasing distinctive memory effect. Brunauer–Emmett–Teller (BET) gas measurements performed support mesoporous ZAC-LDH CZA-LDH. FTIR spectrum confirms interaction molecules surface These findings emphasize efficacy LDHs in dye, CZA-LDH demonstrating superior efficiency compared context
Язык: Английский
Процитировано
3
Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown
Опубликована: Июнь 20, 2024
Язык: Английский
Процитировано
3
Surfaces and Interfaces, Год журнала: 2024, Номер unknown, С. 105366 - 105366
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
3
International Journal of Environmental Research, Год журнала: 2025, Номер 19(4)
Опубликована: Апрель 16, 2025
Язык: Английский
Процитировано
0
Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114654 - 114654
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
Materials Chemistry and Physics, Год журнала: 2024, Номер 326, С. 129835 - 129835
Опубликована: Авг. 8, 2024
The present study investigates the effectiveness of Mg/Al layered double hydroxide (MATclay) for adsorbing Congo Red dye (CR) from wastewater. MATclay was prepared using a cost-effective co-precipitation method at pH 9.5, ensuring both chemical and mechanical stability. in-depth physico-chemical characterization sample performed various techniques, including FE-SEM, FT-IR, XRD, DLS, BET surface area, Zeta potential, TEM, XPS, XAS, TGA. Batch experiments were to evaluate adsorptive performance under different conditions (30–100 mg/L initial concentration, 298–320 K temperature range, 5–180 min contact time). adsorption data fit best with Langmuir model, indicating monolayer maximum capacity 60.61 mg/g. Post-adsorption analysis SEM, TGA confirmed interaction CR MATclay. Furthermore, material applied as potential adsorbent other type pollutants, namely cationic (Methylene Blue) antibiotics (Metronidazole, Tetracycline, Cefotaxime), obtained in this complementary showing good results removal Tetracycline Cefotaxime antibiotics. Overall, demonstrates an effective pollutants wastewater treatment.
Язык: Английский
Процитировано
1
Bioresource Technology Reports, Год журнала: 2023, Номер 24, С. 101670 - 101670
Опубликована: Окт. 20, 2023
Язык: Английский
Процитировано
2