Numerical Analysis of the Influence of Air Flow Rate on the Development of the Porous Structure of Activated Carbons Prepared from Macadamia Nut Shells DOI Open Access
Mirosław Kwiatkowski, Guojie Zhang

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6264 - 6264

Published: Dec. 21, 2024

This paper presents the numerical analysis of influence air flow rate on porous structure development activated carbons prepared from macadamia nut shells. The analyses based nitrogen and carbon dioxide isotherms were carried out by new clustering-based adsorption method. Therefore, it was possible to evaluate with high precision reliability. In particular, results obtained showed that at an 700 cm3/min has highest capacity respect this adsorbate, but surface heterogeneity. On other hand, towards is sample 500 cm3/min. conducted have shown too causes a violent oxidation reaction, leading uncontrolled burning carbonaceous substance destruction smallest micropores.

Language: Английский

Modelling of a new form of nitrogen doped activated carbon for adsorption of various dyes and hexavalent chromium ions DOI Creative Commons
Mohamed A. El-Nemr, Uyiosa Osagie Aigbe, Kingsley Eghonghon Ukhurebor

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 31, 2025

This study reports a new form of nitrogen-doped activated carbon (AC5-600) produced from blend sawdust (SD) and fish waste (FW) treated with urea ZnCl2 for the adsorption toxic metals dyes. The adsorbent was also explored in treatment acid brown 14 (AB14) orange 7 (AO7) dye molecules hexavalent chromium (Cr6+) ions. pH controls sorption individual contaminants, an observed superlative % contaminants removed at 1.5. Removal credited to electrostatic interaction (EI) between anion dyes Cr6+ species this protonated sites accessible on AC5-600 surface. Based error values obtained non-linear modelling (NLM) kinetic isotherm models, Elovich (ELM-AB14 Cr6+), pseudo-first- (PFOM-AB14) second-order models (PSOM-AB14, AO7 Cr6+) Freundlich (FRHM) model were found ideally define various contaminants. determined maximum capacity (Qm) based NLM 1114, 1929 318 mg.g-1 AB14 dye, ions, respectively. computational calculations, energies -4.492 -8.090 eV 2.563, 1.789, 1.226 1.928 Cr2, CrO3, CrO4, CrO4H species. ions synthesised predicted employing response surface methodology (RSM) artificial neural network (ANN) models. ANN more effective predicting than RSM, it highly applicable process.

Language: Английский

Citations

0
N/S-doped carbon electrode derived from paper waste as a sustainable electric double-layer capacitor DOI Creative Commons
Fitria Rahmawati, Nur Aini,

Qanita Ridwan

et al.

International Journal of Renewable Energy Development, Journal Year: 2025, Volume and Issue: 14(3), P. 392 - 403

Published: Feb. 26, 2025

This research aims to produce N/S-doped Carbon Electrode derived from paper waste (NSCEp) for Electric Double-Layer Capacitor (EDLC). The holds potential as raw material carbon production because of its high cellulose content, abundance availability, and low price. To enhance the electrical performance carbon, an activation step was conducted, followed by double doping with nitrogen sulfur using thiourea. NSCEp result analysed examine specific diffraction peaks, crystallinity, morphology, elemental contents. powder then mixed dispersant a homogeneous slurry electrode film. EDLC assembled in sandwich-like structure, sodium hydroxide (NaOH) solution impregnated separator between film electrodes. assembly conducted under argon atmosphere CR2032 coin cell. results found that provides conductivity 1.21 x 102 S/cm. prepared achieved capacitance value 39.555 F/g determined cyclic voltammetry (CV) analysis. Furthermore, demonstrates initial charge-discharge capacities 300.56 mAh/g 248.88 mAh/g, respectively, at current 0.015 A/g. capacity remains stable up 300 cycles.

Language: Английский

Citations

0
Enhancing the generation and stabilization of ZnO nanoparticles on modified clay with polyethylenimine to improve the photodegradation of dyes in textile wastewater DOI
Afef Attia, Noureddine Elboughdiri, Djamel Ghernaout

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 73, P. 107711 - 107711

Published: April 16, 2025

Language: Английский

Citations

0
Removal of Rhodamine B from Aqueous Solutions using Coffee Residual DOI Creative Commons

Choong Jeon,

Moo Joon Shim

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101188 - 101188

Published: April 1, 2025

Language: Английский

Citations

0
Eggshell Waste as a Sustainable Adsorbent for Effective Removal of Direct Dyes from Textile Wastewater DOI

Sarra Ben Salah,

Afef Attia, Raja Ben Amar

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(16)

Published: April 1, 2025

Abstract This study aims to evaluate the performance of calcined eggshells (CES) for removing pollutants across three textile effluent types with increasing complexity (aqueous, reconstituted, and real effluent), highlighting its potential as an adsorbent a wide range pollutants. The results indicate that dye adsorption capacities in aqueous, effluents were 80.1, 36.3, 64.8 mg g −1 , respectively. CES is most effective at turbidity from effluent, achieving 98% removal efficiency. However, COD efficiency by relatively low, reaching only 33%, least five times slower than removal, requiring higher dose. Dye follows Langmuir isotherm pseudo‐second‐order kinetics, endothermic spontaneous process. Desorption studies confirm reusability. All characterizations indicated occurred through physisorption, electrostatic forces, hydrogen bonding, van der Waals interactions, ion exchange, release calcium. Overall, this research demonstrates cost‐effective efficient solution dyes, turbidity, some wastewater. calcium ions treated requires additional treatment, such nanofiltration.

Language: Английский

Citations

0
Development of Graphene Oxide Membrane on Flat Mud Ceramic Support for Methylene Blue Dyes Removal DOI

Zouhair Salah,

Hajer Aloulou,

Wala Aloulou

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(16)

Published: April 1, 2025

Abstract In this study, flat mud supports (Mud), sintered at different temperatures (900 °C–1050 °C), were prepared via dry uniaxial pressing process. The SEM analysis evidenced that the free of defects and present homogeneous surface. optimal treatment temperature was found 950 °C, resulting in a low shrinkage 9%, 32% porosity, 1.4 µm pore size, 20 MPa mechanical strength, water permeability 168.21 L·h −1 ·m −2 ·bar . low‐cost support coated with graphene oxide (GO) by dip coating method. adhesion GO powder on membrane surface checked demonstrating layer over Mud support. GO/Mud presents an average diameter 0.63 69.08 efficiency explored for methylene blue (MB) removal, achieving high color retention 96%. study permeate flux decrease time shows fouling follows standard blocking model which accordance results obtained from mass balance between inlet outlet during filtration, presenting error less to 1%. After filtration operation, initial recovered chemical regeneration using alternatively acidic–basic solution.

Language: Английский

Citations

0
Selective capture and co-removal of anionic dyes with multi-metallic nanosheets: Superior properties and multi-sites synergistic mechanism DOI

Zhaoliang Shan,

Ke Feng,

Liuying Du

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 74, P. 107797 - 107797

Published: April 27, 2025

Language: Английский

Citations

0
Harnessing the synergistic potential of coprecipitation-induced Ag3PO4 nanoparticles for environmental and biological contamination DOI
Mohd Imran,

Mubarak A. Eldoma,

Nasser Zouli

et al.

The European Physical Journal Plus, Journal Year: 2025, Volume and Issue: 140(4)

Published: April 30, 2025

Language: Английский

Citations

0
Analysis of the effect of caffeine on the efficiency of wastewater treatment processes by integrated methods DOI Creative Commons
Angelika Skorupa, Małgorzata Worwąg, Mariusz Kowalczyk

et al.

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101198 - 101198

Published: April 1, 2025

Language: Английский

Citations

0
Enhanced CO2 Capture Potential of Chitosan-Based Composite Beads by Adding Activated Carbon from Coffee Grounds and Crosslinking with Epichlorohydrin DOI Open Access
Vorrada Loryuenyong,

Worranuch Nakhlo,

Praifha Srikaenkaew

et al.

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(16), P. 8916 - 8916

Published: Aug. 16, 2024

Carbon dioxide (CO2) capture has been identified as a potential technology for reducing the anthropic emissions of greenhouse gases, particularly in post-combustion processes. The development adsorbents carbon and storage is expanding at rapid rate. This article presents novel sustainable synthesis method production chitosan/activated CO2 adsorbents. Chitosan biopolymer that naturally abundant contains amino groups (–NH2), which are required selective adsorption CO2. Spent coffee grounds have considered feedstock activated through carbonization chemical activation. ground composite microspheres were created using emulsion cross-linking with epichlorohydrin. effects amount chitosan (15, 20, 25 g), (10, 30, 40%w/w), epichlorohydrin (2, 3, 4, 5, 6, 7 8 g) examined. beads superior to neat beads. adsorbed synthesized materials standard temperature pressure improved by increasing quantity These findings suggest bead be applied separation applications.

Language: Английский

Citations

2