Chitosan-Functionalized Magnetic Engineering Porous Carbon Materials for Simultaneous Adsorption of Cr(Vi) and Organic Dyes from Wastewater DOI

Weilong Wu,

Han Zhang, Rong Qian

et al.

Published: Jan. 1, 2023

Language: Английский

Process Optimization and Equilibrium, Thermodynamic, and Kinetic Modeling of Toxic Congo Red Dye Adsorption from Aqueous Solutions Using a Copper Ferrite Nanocomposite Adsorbent DOI Creative Commons
P. Vairavel,

Akhil Chinta,

Gaurav Ganesh Shetty

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(2), P. 418 - 418

Published: Jan. 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.

Language: Английский

Citations

9
Recent Progress on the Adsorption of Heavy Metal Ions Pb(II) and Cu(II) from Wastewater DOI Creative Commons

Dikang Fan,

Peng Yang, Xi He

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(12), P. 1037 - 1037

Published: June 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.

Language: Английский

Citations

9
Methylene Blue Dye Adsorption on Iron Oxide-Hydrochar Composite Synthesized via a Facile Microwave-Assisted Hydrothermal Carbonization of Pomegranate Peels’ Waste DOI Creative Commons

Manal Hessien

Molecules, Journal Year: 2023, Volume and Issue: 28(11), P. 4526 - 4526

Published: June 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.

Language: Английский

Citations

15
Uncalcined Zn/Al Carbonate LDH and Its Calcined Counterpart for Treating the Wastewater Containing Anionic Congo Red Dye DOI Creative Commons

Kuppusamy Manjula Rani,

Pachagoundanpalayam Nachimuthugounder Palanisamy,

Vennila Nagamuthu Kowshalya

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(11), P. 2698 - 2698

Published: June 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

Language: Английский

Citations

3
Numerical parametric optimization with desirability functions for methylene blue dye removal by sunflower seed pericarp activated carbon DOI
Ali H. Jawad,

Muhammad Mujahid Nafi,

H Awang

et al.

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: June 20, 2024

Language: Английский

Citations

3
Rapid Adsorptive Removal of Congo Red Using Cu/Fe/Al Mixed Metal Oxides Obtained from Layered Double Hydroxide Nanomaterial: Performance and Optimization Evaluation using BBD-RSM Approach DOI
Divya Mahar, Nitish Semwal,

Ashish Aneja

et al.

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: unknown, P. 105366 - 105366

Published: Oct. 1, 2024

Language: Английский

Citations

3
Eco-Friendly Green Synthesis: Harnessing Ni/Al-Layered Double Hydroxide-Activated Carbon Nanocomposite for Sustainable Environmental Remediation DOI
Sangeetha Velusamy, Kannan Kandasamy,

Manjula Rani Kuppusamy

et al.

International Journal of Environmental Research, Journal Year: 2025, Volume and Issue: 19(4)

Published: April 16, 2025

Language: Английский

Citations

0
Valorizing Saccharum officinarum and plastic waste biochar with Zn-Al LDH for Congo Red dye removal: kinetics and isotherms insights DOI

Nancy Jaswal,

Sahil Sahil,

Amit Kumar Sharma

et al.

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114654 - 114654

Published: May 1, 2025

Language: Английский

Citations

0
Unmodified Mg/Al layered double hydroxide clay with versatile and specific adsorption capacity over high spectrum type of harmful contaminants DOI Creative Commons
Gabriela Buema,

Anca Emanuela Minuti,

Adrian Iulian Borhan

et al.

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 326, P. 129835 - 129835

Published: Aug. 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.

Language: Английский

Citations

1
Catalytic calcite-based bio-composite material synthesis for decolourization of methyl red by Burkholderia sp. ISTR5 DOI

Annu Khatri,

Manan Kaur Ghai,

Shaili Srivastava

et al.

Bioresource Technology Reports, Journal Year: 2023, Volume and Issue: 24, P. 101670 - 101670

Published: Oct. 20, 2023

Language: Английский

Citations

2