Efficient removal of Cu2+ and methylene blue pollutants from an aqueous solution by applying a new hybrid adsorbent based on alginate-chitosan and HAP derived from Moroccan rock phosphate

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(49), P. 107790 - 107810

Published: Sept. 23, 2023

Language: Английский

---

Hydroxyapatite incorporated metakaolin/sludge based geopolymer adsorbent for copper ions and ciprofloxacin removal: Synthesis, characterization and mechanisms

Arabian Journal of Chemistry, Journal Year: 2024, Volume and Issue: 17(5), P. 105745 - 105745

Published: March 21, 2024

The efficacy of copper Cu(II) adsorption is significantly affected by the presence antibiotics, such as ciprofloxacin (CIP). Therefore, researchers are highly interested in conducting extensive investigations on simultaneous and CIP. However, most adsorbents exhibited low capacity CIP with increasing concentration due to competition for sites. Hence, integration various into a single composite could be an effective way increase Thus, this study aims incorporate hydroxyapatite (Hap) metakaolin/sludge based geopolymer adsorbent effect different filler loading Hap (1–3 %) geopolymerization also removal efficiency were studied binary system. Moreover, effects varied concentrations (0–100 mg/L) investigated. Characterization techniques x-ray diffraction (XRD), fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), brunauer-emmett-teller (BET) neutron tomography imaging employed characterize physicochemical properties synthesized geopolymer. It was found that content has significant impact Cu(II). addition 2 % providing more nucleation site (C-A-S-H) silicoalumino phosphate gel (SAP) leading formation cross-linked network abundant active sites which would favour adsorption. Hap-geopolymer increased (25.6 61.51 complexation bridging between resulting GMK25S1-2Hap-Cu(II)-CIP complexes. hybrid method exceptionally efficient approach treatment wastewater comprises

Language: Английский

---

Effect of chitosan concentration on hydroxyapatite/chitosan composite synthesis using the in-situ method as a dye adsorbent

Kuwait Journal of Science, Journal Year: 2024, Volume and Issue: 51(4), P. 100252 - 100252

Published: May 22, 2024

Hydroxyapatite (HAp) is a versatile material with wide-ranging applications, including its utility as an adsorbent. However, brittleness and limited adsorption capacity pose challenges, prompting the incorporation of chitosan (CTS) fillers to enhance mechanical strength properties. The hydroxyapatite/chitosan (HAp/CTS) composite was synthesized via in-situ method, utilizing natural sources such calcium ions from cuttlefish bones extracted shrimp shells. Various concentrations (10, 20, 30, 40, 50 wt%) were explored in synthesis process, optimal Rhodamine B dye observed at 30% concentration, yielding 0.1832 mg/g. Validation HAp/CTS achieved through X-ray diffraction, revealing presence CTS new peak 2θ 19.23°, while infrared spectroscopy confirmed absorption bands for both HAp CTS. Additionally, scanning electron microscopy-energy dipersive (SEM-EDS) investigations revealed irregular shapes agglomeration, resulting Ca/P ratio 1.80 composite. HAp/CTS-30% demonstrated efficient following Freundlich isotherm equation, pseudo-second-order kinetics, exhibited good reusability. These findings suggest that could serve promising, cost-effective solution treating industrial wastewater.

Language: Английский

---

Cellulose-citric acid-chitosan@metal sulfide nanocomposites: Methyl orange dye removal and antibacterial activity

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 276, P. 133795 - 133795

Published: July 10, 2024

Language: Английский

---

Revealing the interface chemistry of polyaniline grafted biomass via statistical modeling of multi-component dye systems: optimization, kinetics, thermodynamics, and adsorption mechanism

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(14), P. 21302 - 21325

Published: Feb. 22, 2024

Language: Английский

---

SnMn2O4-rGO: a mixed spinel on reduced graphene oxide as binary heterojunction for light induced oxidative degradation and reduction of environmental contaminants

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 111906 - 111906

Published: Feb. 1, 2025

Language: Английский

---

Optimization of the degree of deacetylation of chitosan beads for efficient anionic dye adsorption: kinetics, thermodynamics, mechanistic insights via DFT analysis, and regeneration performance

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Language: Английский

---

Synthesis of Mixed Metal Nano-Oxides (MMNOs) for Cu (II) adsorption with remarkable removal efficiency: Isothermal, kinetics, and thermodynamics studies.

Journal of Materials Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

---

Synthesis of activated biochar derived from Washingtonia robusta palm seeds and evaluation of its viability for copper and zinc ions removal from contaminated water

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 162, P. 112215 - 112215

Published: Feb. 28, 2024

Language: Английский

---

The facile adsorptive removal of commercial grade chlorpyrifos from water using nano-magnetite

International Journal of Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Language: Английский

---