Regenerable magnetic iron oxide incorporated chitosan beads for sulfate (SO42−) removal from wastewater: Isotherms, kinetics and mechanism

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F25%3A63597580" target="_blank" >RIV/70883521:28610/25:63597580 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/pat.70395" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/pat.70395</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pat.70395" target="_blank" >10.1002/pat.70395</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Regenerable magnetic iron oxide incorporated chitosan beads for sulfate (SO42−) removal from wastewater: Isotherms, kinetics and mechanism

Popis výsledku v původním jazyce

Sulfate contamination removal from mine waste and industrial water is a primary environmental concern, with high concentrations leading to disease. This research focuses on the preparation of iron oxide-incorporated chitosan beads (IOICBs) for the effective adsorption removal of sulfate. The IOICBs were synthesized by a chemical co-precipitation approach and characterized by Scanning Electron Microscopy, x-ray Diffraction, Brunauer–Emmett–Teller analysis, Fourier Transform Infrared Spectroscopy, and energy-dispersive x-ray mapping for structural, chemical, and morphological properties. The sulfate adsorption on IOICBs was investigated in batch mode studies using UV–Vis spectroscopy. The effect of several parameters, such as adsorbent dosage, pH, initial concentration, and contact time, on the sorption capacity of the IOICBs was studied. The IOICBs have a high efficacy for sulfate removal from contaminated water at pH 2 with a maximum sorption capacity of 147.7 mg/g at room temperature. The mechanism suggested that the presence of acidic NH4+ functional groups on the surface of chitosan facilitates the chemisorption of the sulfate ions. The adsorption equilibrium is in good agreement with the Langmuir Isotherm (R2 = 0.997), and the kinetics analysis suggests the adsorption is a pseudo-second-order process (R2 = 0.992), confirming the chemisorption of sulfate species on IOICBs. After sulfate adsorption, the IOICBs were regenerated in 0.1 M NaOH solution, reused for multiple sorption/desorption cycles, and the reusability remained at over 83% after four consecutive cycles. Thus, IOICBs are potential absorbents for removing industrial pollutants such as sulfate ions from wastewater.

Název v anglickém jazyce

Regenerable magnetic iron oxide incorporated chitosan beads for sulfate (SO42−) removal from wastewater: Isotherms, kinetics and mechanism

Popis výsledku anglicky

Sulfate contamination removal from mine waste and industrial water is a primary environmental concern, with high concentrations leading to disease. This research focuses on the preparation of iron oxide-incorporated chitosan beads (IOICBs) for the effective adsorption removal of sulfate. The IOICBs were synthesized by a chemical co-precipitation approach and characterized by Scanning Electron Microscopy, x-ray Diffraction, Brunauer–Emmett–Teller analysis, Fourier Transform Infrared Spectroscopy, and energy-dispersive x-ray mapping for structural, chemical, and morphological properties. The sulfate adsorption on IOICBs was investigated in batch mode studies using UV–Vis spectroscopy. The effect of several parameters, such as adsorbent dosage, pH, initial concentration, and contact time, on the sorption capacity of the IOICBs was studied. The IOICBs have a high efficacy for sulfate removal from contaminated water at pH 2 with a maximum sorption capacity of 147.7 mg/g at room temperature. The mechanism suggested that the presence of acidic NH4+ functional groups on the surface of chitosan facilitates the chemisorption of the sulfate ions. The adsorption equilibrium is in good agreement with the Langmuir Isotherm (R2 = 0.997), and the kinetics analysis suggests the adsorption is a pseudo-second-order process (R2 = 0.992), confirming the chemisorption of sulfate species on IOICBs. After sulfate adsorption, the IOICBs were regenerated in 0.1 M NaOH solution, reused for multiple sorption/desorption cycles, and the reusability remained at over 83% after four consecutive cycles. Thus, IOICBs are potential absorbents for removing industrial pollutants such as sulfate ions from wastewater.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/EH23_021%2F0009004" target="_blank" >EH23_021/0009004: Rozvoj aplikačního potenciálu v oblasti polymerních materiálů v kontextu naplňování principů cirkulární ekonomiky (POCEK)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Polymers for Advanced Technologies

ISSN

1042-7147

e-ISSN

1099-1581

Svazek periodika

36

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

nestránkováno

Kód UT WoS článku

001607110500001

EID výsledku v databázi Scopus

2-s2.0-105020982994