Comparative Study of Cu Ion Adsorption by Nano-Hydroxyapatite Powder Synthesized from Chemical Reagents and Clam Shell-Derived Calcium Sources DOI Creative Commons

Shih-Ching Wu,

Hsueh-Chuan Hsu,

Hong-Yi Ji

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(17), P. 1431 - 1431

Published: Sept. 1, 2024

The increasing contamination of water sources by heavy metals necessitates the development efficient and sustainable adsorption materials. This study evaluates potential nano-hydroxyapatite (HA) powders synthesized from chemical reagents (Chem-HA) clam shells (Bio-HA) as adsorbents for Cu ions in aqueous solutions. Both were using microwave irradiation at 700 W 5 min, resulting nano-sized rod-like particles confirmed HA X-ray diffraction (XRD). Bio-HA exhibited higher crystallinity (67.5%) compared to Chem-HA (34.9%), which contributed Bio-HA’s superior performance. maximum capacities 436.8 mg/g 426.7 Chem-HA, determined Langmuir isotherm model. Kinetic studies showed that ion followed pseudo-second-order model, with achieving equilibrium faster displaying a rate constant (6.39 × 10⁻4 g/mg·min) than (5.16 g/mg·min). Thermodynamic analysis indicated process was spontaneous endothermic, requiring less energy (ΔH° = 39.00 kJ/mol) 43.77 kJ/mol). Additionally, activation lower (41.62 (46.39 kJ/mol), suggesting better efficiency. formation new Cu2(OH)PO4 phase after adsorption, evidenced XRD, replaced Ca lattice. These findings demonstrate Bio-HA, derived natural sources, offers environmental benefits recyclable material, enhancing metal removal efficiency while contributing sustainability utilizing waste materials reducing an impact.

Language: Английский

Facile synthesis of geopolymer composites for effectual removal of Cr(VI) and Cd(II) ions from aqueous solutions DOI Creative Commons
Sashi Yadav,

Monika Dhawan,

Vineet Kumar

et al.

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

Published: April 30, 2025

Language: Английский

Citations

0
Hydroxyapatite incorporated geopolymer porous adsorbent for efficient removal of copper ions and ciprofloxacin DOI
Pilomeena Arokiasamy, Mohd Mustafa Al Bakri Abdullah, Eva Arifi

et al.

Journal of the American Ceramic Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Abstract Sintering is a promising surface modification method for geopolymers in improving their ability to coadsorb heavy metals and antibiotics. However, geopolymer usually requires high sintering temperature (1000–1200°C), making it energy intensive. Therefore, researchers are paying more attention on the synthesis of low‐temperature sintered adsorbents In this regard, calcium‐based can lower due its less thermal stability exhibit pores wider cracks during heat exposure. no research has been done development porous adsorbent using hydroxyapatite (Hap). Thus, study aims sinter composed 25% metakaolin, 75% silica fume 2% Hap at varied temperatures (300–800°C) coadsorption copper ions (Cu 2+ ) ciprofloxacin (CIP). The effects different phase stability, pore removal efficiency Cu CIP were studied both single binary system. characterization techniques, namely, X‐ray diffraction (XRD), Fourier‐transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET), tomographic microscopy (XTM) employed characterize physicochemical properties adsorbents. Based experimental results, 600°C obtained highest (87%) (99.53%) comparison oven‐cured samples with (61.5%) (96.62%). Besides, XTM results revealed that total porosity increased by 60.1% when compared sample. complete dehydration calcium aluminate silicate hydrate (C–A–S–H) gel decomposition calcite created microporous structure, enhancing adsorption. Hence, simple effective strategy developed improve adsorption treatment wastewater comprises CIP.

Language: Английский

Citations

0
Porous metakaolin-based geopolymers for adsorption of Contaminants of Emerging Concern from wastewaters DOI Creative Commons
Serena C. Tarantino, Roberta Occhipinti, Federica Maraschi

et al.

Applied Clay Science, Journal Year: 2024, Volume and Issue: 259, P. 107502 - 107502

Published: July 31, 2024

This research investigates the applicability of metakaolin-based geopolymers in removal organic contaminants emerging concern from polluted water by adsorption. Ofloxacin and cortisone were chosen as model molecules, because their different chemical properties. For each contaminant, adsorption was first tested on powdered materials with mesoporosity. The two drugs eventually evaluated macroporous geopolymer monoliths, obtained using commercial olive oil H2O2 solution pore-forming agents to enhance permeability liquids thus favor absorption process. Finally, a novel ceramic composite diaphragm prepared tested. Adsorption experiments demonstrated larger affinity all substrates for ofloxacin than cortisone. Different mechanisms observed, monolayer antibiotic cooperative steroid, capacities, 29(2) mg g−1 0.47(2) g−1, respectively. efficiencies monoliths compared. Satisfactory drug recoveries (>99%) also under realistic conditions, i.e., freshwater, micrograms per liter concentration.

Language: Английский

Citations

3
Geopolymer-Hydroxyapatite composites foams for wastewater remediation DOI Creative Commons
Elettra Papa, Valentina Medri, Elena Landi

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(23), P. 50377 - 50387

Published: Sept. 28, 2024

Language: Английский

Citations

2
Enhanced sequestration of ciprofloxacin from aqueous solution using composite montmorillonite-kaolin clay adsorbent DOI

Toyin A. Oreofe,

A. O. Arinkoola, Solomon Alagbe

et al.

Nano-Structures & Nano-Objects, Journal Year: 2024, Volume and Issue: 40, P. 101364 - 101364

Published: Sept. 30, 2024

Language: Английский

Citations

1
Environmental geopolymer microsphere composite catalysts as highly efficient activators of peroxymonosulfate (PMS) for the degradation of Rhodamine B DOI
Yutong Yang,

Wenkang Qi,

Yuanyuan Xie

et al.

Journal of Materials Science, Journal Year: 2024, Volume and Issue: 59(44), P. 20575 - 20592

Published: Nov. 1, 2024

Language: Английский

Citations

1
Comparative Study of Cu Ion Adsorption by Nano-Hydroxyapatite Powder Synthesized from Chemical Reagents and Clam Shell-Derived Calcium Sources DOI Creative Commons

Shih-Ching Wu,

Hsueh-Chuan Hsu,

Hong-Yi Ji

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(17), P. 1431 - 1431

Published: Sept. 1, 2024

The increasing contamination of water sources by heavy metals necessitates the development efficient and sustainable adsorption materials. This study evaluates potential nano-hydroxyapatite (HA) powders synthesized from chemical reagents (Chem-HA) clam shells (Bio-HA) as adsorbents for Cu ions in aqueous solutions. Both were using microwave irradiation at 700 W 5 min, resulting nano-sized rod-like particles confirmed HA X-ray diffraction (XRD). Bio-HA exhibited higher crystallinity (67.5%) compared to Chem-HA (34.9%), which contributed Bio-HA’s superior performance. maximum capacities 436.8 mg/g 426.7 Chem-HA, determined Langmuir isotherm model. Kinetic studies showed that ion followed pseudo-second-order model, with achieving equilibrium faster displaying a rate constant (6.39 × 10⁻4 g/mg·min) than (5.16 g/mg·min). Thermodynamic analysis indicated process was spontaneous endothermic, requiring less energy (ΔH° = 39.00 kJ/mol) 43.77 kJ/mol). Additionally, activation lower (41.62 (46.39 kJ/mol), suggesting better efficiency. formation new Cu2(OH)PO4 phase after adsorption, evidenced XRD, replaced Ca lattice. These findings demonstrate Bio-HA, derived natural sources, offers environmental benefits recyclable material, enhancing metal removal efficiency while contributing sustainability utilizing waste materials reducing an impact.

Language: Английский

Citations

0