Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Desalination, Journal Year: 2024, Volume and Issue: 586, P. 117847 - 117847
Published: June 17, 2024
Language: Английский
Citations
10
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: Jan. 20, 2025
A novel adsorbent ZnAl–LDHs/SiO2 (ZA/SiO2) was prepared by blending urea mixture of ZnSO4 and Al2(SO4)3 while using SiO2 as a support form. The adsorption properties ZA/SiO2 for the removal toxic metal ions (Cu(II) Cr(VI)) from water were evaluated. By batch experiment method to investigate Cu(II) Cr(VI) solution treatment effect. sorption kinetics curves on L-shaped. What's more, solid concentration effect found in process kinetics. Langmuir Freundlich isotherm models used analyze data. results showed that conforms models. However, capacity compounds is greatly improved. 158 mg·g−1 176 mg·g−1, which 3.6 1.8 times ZnAl-LDHs (ZA), respectively. Density functional theory (DFT) utilized analysis intrinsic mechanism specific pathways. primary removing mainly included intercalation Cr2O72− exchange between OH−, excluding Cr(OH)3 precipitation. Regarding eliminating water, it involves isomorphic substitution predominant process, except formation Cu(OH)2 precipitates.
Language: Английский
Citations
1
Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131861 - 131861
Published: Jan. 1, 2025
Language: Английский
Citations
1
International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 283, P. 137517 - 137517
Published: Nov. 13, 2024
Language: Английский
Citations
8
Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 351, P. 128097 - 128097
Published: May 24, 2024
Language: Английский
Citations
7
Chemosphere, Journal Year: 2024, Volume and Issue: 362, P. 142537 - 142537
Published: June 4, 2024
The discharge of heavy metals into the environment has adversely affected aquatic ecosystem due to their toxic and non-biodegradable nature. In this research, a three-dimensional graphene oxide/carboxymethylcellulose/aluminium sulphate (GOCAS) aerogel was synthesised evaluated as novel means for lead zinc removal. GOCAS prepared via ice-templating oxide with carboxymethylcellulose aluminium crosslinking functionalisation additives. Characterisation by various analytical techniques confirmed successful integration chemical hydroxyl groups in were found participate adsorption both metals. equilibrium correlate well Freundlich isotherm, while fitted closely Langmuir isotherm. kinetic behaviour best described pseudo-second-order. interactive influences concentration, temperature, contact time adsorbent dose on metal removal explored central composite design, optimum capacity determined be 138.7 mg/g at 20 mg, initial concentration 100 mg/L, temperature 50 °C 45 min. 52.69 30 65 40 Furthermore, regeneration studies hydrochloric acid eluant successfully conducted up four adsorption-desorption cycles. Overall, work demonstrates that is viable nanosorbent from water systems.
Language: Английский
Citations
5
Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown
Published: June 24, 2024
Abstract The purpose of this work is to study the efficiency lead ions removal via adsorption onto created solid nanomaterials. Three adsorbents were synthesized as cellulose nanoparticles (CN) extracted from plant loofah sponge using alkali treatment and acid hydrolysis techniques, chitosan beads (CZ), nanoparticles/chitosan composite (CZC). generated investigated TGA, N 2 adsorption/desorption, ATR-FTIR spectroscopy, SEM, TEM, XRD, pH PZC . Based on our findings, CZC had a 7.2, larger specific surface area (645.3 m /g), total pore volume (0.372 cm 3 /g). batch was well-fitted by pseudo-second order, Elovich, Langmuir, Temkin, Dubinin-Radushkevich all samples. Cellulose highest Langmuir capacity (221.104 mg/g) at 47°C, 120 min shaking time, g/L adsorbent dose, 6.5. Nitric desorption percentage (92%). thermodynamic investigation revealed that ion endothermic, favorable, spontaneous, physisorption. Our findings showed has high rapid kinetics, indicating its potential for employment in water treatment.
Language: Английский
Citations
4
RSC Advances, Journal Year: 2024, Volume and Issue: 14(51), P. 37859 - 37870
Published: Jan. 1, 2024
In this study, electrospinning was used to fabricate xanthan gum (XF) and thiosemicarbazide/xanthan (TXF) nanofibers crosslinked with ferric ions for effective Pb 2+ adsorption.
Language: Английский
Citations
4
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: Jan. 13, 2025
This study aims to utilize secondary aluminum dross waste synthesize Fe-Al layered double hydroxide (Fe-Al LDH) for efficient adsorption of arsenic from drinking water. The synthesis process was based on a multi-step hydrometallurgical approach, in which the content first converted sodium aluminate. followed by transformation into LDH through series processes, including gelation, sol formation, simultaneous precipitation, and aging. A suitable crystal structure adsorbent successfully synthesized at Fe: Al molar ratio 3, pH 7, an aging time 12 h. characterization tests revealed that Fe-Al-LDH had interlayer space 7.5 Å, specific surface area 145 m2/g, pore volume 0.57 cm3/g. resulting then used adsorb aqueous solutions. results showed amount adsorbed 0.144 mg/g room temperature, dose 0.5 g/L, = 7 initial concentration 80 µg/L. reduced water below standard value after period 40 min. In addition, can stabilize species its thus prevent their re-release environment.
Language: Английский
Citations
0
International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 142891 - 142891
Published: April 1, 2025
Language: Английский
Citations
0