The valorization of Prunus mahaleb shell through acid modification for the sorption of Pb2+ removal from aqueous solution DOI Creative Commons

Zehra Saba Keskin,

Zeynep Mine Şenol, Selçuk Şimşek

et al.

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: 15(5), P. 6943 - 6955

Published: June 3, 2024

Abstract This study aimed to investigate the biosorption performance of acid-modified waste Prunus mahaleb (PMA) shells in removal Pb 2+ ions from aqueous solutions. Changes morphological properties and functional components PMA biosorbent were characterized using SEM–EDX, FT-IR, BET, PZC analyses. The effect various parameters such as initial concentration, pH, dosage, contact time, temperature on was investigated a batch procedure. maximum capacity, determined Langmuir isotherm, calculated be 119 mg g −1 . It found that kinetic mechanism followed pseudo-second-order kinetics intraparticle diffusion model. According thermodynamic parameters, endothermic (Δ H ° > 0), spontaneous S entropy-increasing G < 0). outcomes experiment evaluated comparison other sorbents have been previously commonly used literature. demonstrated could promising, environmentally friendly, cost-effective, sustainable potential for ions.

Language: Английский

Lead, Nickel, Arsenic, and Chromium Contamination in Nigerian Groundwater: Sources, Potential Impacts, and Removal Techniques DOI
Johnbosco C. Egbueri, Johnson C. Agbasi, Joshua O. Ighalo

et al.

Springer water, Journal Year: 2025, Volume and Issue: unknown, P. 327 - 355

Published: Jan. 1, 2025

Language: Английский

Citations

2
Mechanism, Formation and Transport of Polycyclic Aromatic Hydrocarbons (PAHs) in Fruits, Vegetables and Fresh Fish Species in Africa: A Systematic Review of its Health Risk DOI
Arinze Longinus Ezugwu, Johnson C. Agbasi, Johnbosco C. Egbueri

et al.

Chemistry Africa, Journal Year: 2024, Volume and Issue: 7(5), P. 2321 - 2344

Published: March 27, 2024

Language: Английский

Citations

4
Acid-activated corn silk as a promising phytosorbent for uptake of Malachite green and Cd (II) ion from simulated wastewater: equilibrium, kinetic and thermodynamic studies DOI

Chisom T. Umeh,

John Kanayochukwu Nduka, Refilwe Mogale

et al.

International Journal of Phytoremediation, Journal Year: 2024, Volume and Issue: 26(10), P. 1593 - 1610

Published: April 16, 2024

Malachite green (MG) dye and cadmium metal ion are toxic pollutants that should be removed from aqueous environment. The recent study aimed to examine the adsorption behavior of MG Cd (II) wastewater onto low-cost adsorbent prepared by activating corn silk with nitric acid (ACS) characterized SEM, FTIR, XRD, BET TGA. optimum was observed at pH 7 9 maximum uptake both 0.5 g dosage, 60 mins contact time 20 mg/L initial concentration. retention studied best fit Langmuir isotherm Pseudo-second order kinetics. monolayer coverage capacity ACS for 18.38 mg/g 25.53 mg/g, respectively. Thermodynamic studies predicted a spontaneous reaction exothermic process whereas an endothermic confirmed based on estimated parameters. mechanism combination electrostatic interaction, pore diffusion, exchange, pie-pie attraction, hydrogen bonding, complexation. adsorbed were effectively desorbed significant regeneration efficiency after successive five cycles proved potential biosorbent selective sequestration cationic divalent effluents.

Language: Английский

Citations

4
Thermal and chemical pretreatment of Ebenaeae Diospyros preusii seed for enhanced adsorptive removal of aqueous-bound Cr(VI) DOI Creative Commons
Hillary Onyeka Abugu,

C. E. Ikwelle,

Olufemi A. Odewole

et al.

Discover Water, Journal Year: 2025, Volume and Issue: 5(1)

Published: Jan. 6, 2025

This paper described the thermal activation of Ebenaeae Diospyros preusii seed (EDP) as a cost effective biosorbent for Cr(VI) removal. SEM, FTIR, TGA, BET and XRD were used to characterise both thermally modified EDP (TM-EDP) unmodified (UM-EDP) biosorbents obtained from ground seed. The experimental data modelled using Langmuir, Dubinin-Radushkevich, Temkin, Flory–Huggins Freundlich isotherm determine process removal this ion aqueous solution. Batch adsorption method was employed in evaluation adsorbent's performance. pH effect, initial concentration, temperature contact time influence on also evaluated. Thermal modification found increase surface area 471.665 m2/g 771.738 m2/g. FTIR showed existence C = O, -C-H, C-O-O- –OH functional groups functionalized EDP. characterization that adsorbent is amorphous with rough surfaces which enhances Cr(VI). precursor better capacity revealing benefit modification. From plots, Langmuir model best solution determination coefficient (R2) value 0.991 unto followed physisorption mechanism. kinetic studies, it concluded pseudo-second order most appropriately explained indicating chemisorption. An exothermic, chemosorptive non-spontaneous identified by thermodynamics investigations. study therefore revealed be 51.11% at 4.

Language: Английский

Citations

0
Effective utilization of lignocellulosic waste generated from food processing centers towards removal of nitrate from water DOI
Naba Kumar Mondal, Kamalesh Sen,

Priyasa Ghosh

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 3, P. 100011 - 100011

Published: June 18, 2024

This study investigates the use of chemically modified Musa paradisiaca (banana fruit) peels (BPD) as an adsorbent for nitrate removal, representing a food waste management application this agricultural material. innovative approach addresses challenges while offering cost-effective and sustainable solution water treatment. The research evaluates effectiveness BPD in batch system optimizes process using Response Surface Methodology (RSM). Detailed characterization was performed advanced techniques including scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), Point Zero Charge (pHzpc), Brunauer–Emmett–Teller (BET) surface area analysis, Fourier Transform-Infrared Spectroscopy (FTIR). Isotherm analysis revealed that Langmuir model provided excellent fit (R² = 0.994), with maximum adsorption capacity 47.619 mg/g BPD. Kinetic studies indicated pseudo-second-order most appropriate 0.969). Thermodynamic showed removal is more favorable at lower temperatures, increase free 313 K negative enthalpy value (-28.873 kJ/mol). Optimization via RSM identified optimal conditions: initial concentration 83.92 mg/L, pH 3.57, contact time 38.37 minutes, temperature 42.29 ℃, achieving desirability score 1.0. Furthermore, Density Functional Theory (DFT) elucidated mechanism, highlighting predominance C-O interactions ligand exchange process, electrophilicity index (ω) −1.331 eV. These findings suggest lignocellulosic materials from processing waste, peels, hold significant promise mitigating contamination drinking water.

Language: Английский

Citations

2
Adsorptive removal of potentially toxic Pb2+ from aqueous medium using functionalized Pycnanthus angolensis seed as a precursor DOI

F. C. Eze,

Hillary Onyeka Abugu, Janefrances Ngozi Ihedioha

et al.

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

Published: July 9, 2024

Language: Английский

Citations

1
Amine-Functionalized Bimetallic Ce/Zr-based MOF as an Effective Adsorptive Photocatalyst for the Removal of Persistent Organic Dye DOI

Sagar S. Patil,

Prakash K. Labhane, K.S. Bhavsar

et al.

Chemistry Africa, Journal Year: 2024, Volume and Issue: 7(9), P. 5105 - 5116

Published: Oct. 16, 2024

Language: Английский

Citations

0
Functionalized biochar derived from novel Neolamarchia cadamba leaf extracts for the adsorption of Congo Red dye: kinetics, optimization, and reusability studies DOI Creative Commons

Abhay Sahil Paul,

Saima Habib Khan, Shaziya Siddiqui

et al.

Water Practice & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

ABSTRACT The present research emphasized on the removal of Congo Red (CR) dye from aqueous solutions using an adsorbent synthesized by utilizing leaf extract Neolamarchia cadamba as a bio-template. This facilitates formation zinc oxide nanoparticles which are then carbonized to enhance adsorption capabilities. material is referred NC@ZnC, for coherent CR dye. Various operating parameters were used onto NC@ZnC. maximum monolayer decontamination was 303.03 mg/g when it incubated 90 min at pH 5. specific surface area amalgamated NC@ZnC reported be 6.509 m2/g Bruaneur–Emmett–Teller analysis. Field-emission scanning electron microscopy show rough area, X-ray diffraction analysis determine crystalline structure with grain size 20.062 nm. Elemental dispersive elemental composition Raman spectroscopy demonstrates lysine group that, upon adsorption, interacts oxygen form bond. regresses pseudo-second-order kinetics and follows Langmuir isotherm process. sorption activity respect temperature appears displaying +ΔH° +ΔS°, suggests endothermic impulsive nature.

Language: Английский

Citations

0
The valorization of Prunus mahaleb shell through acid modification for the sorption of Pb2+ removal from aqueous solution DOI Creative Commons

Zehra Saba Keskin,

Zeynep Mine Şenol, Selçuk Şimşek

et al.

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: 15(5), P. 6943 - 6955

Published: June 3, 2024

Abstract This study aimed to investigate the biosorption performance of acid-modified waste Prunus mahaleb (PMA) shells in removal Pb 2+ ions from aqueous solutions. Changes morphological properties and functional components PMA biosorbent were characterized using SEM–EDX, FT-IR, BET, PZC analyses. The effect various parameters such as initial concentration, pH, dosage, contact time, temperature on was investigated a batch procedure. maximum capacity, determined Langmuir isotherm, calculated be 119 mg g −1 . It found that kinetic mechanism followed pseudo-second-order kinetics intraparticle diffusion model. According thermodynamic parameters, endothermic (Δ H ° > 0), spontaneous S entropy-increasing G < 0). outcomes experiment evaluated comparison other sorbents have been previously commonly used literature. demonstrated could promising, environmentally friendly, cost-effective, sustainable potential for ions.

Language: Английский

Citations

0