Regenerable chitosan-embedded magnetic iron oxide beads for nitrate removal from industrial wastewater

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F24%3A63579058" target="_blank" >RIV/70883521:28610/24:63579058 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/va/d3va00351e" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/va/d3va00351e</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3va00351e" target="_blank" >10.1039/d3va00351e</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Regenerable chitosan-embedded magnetic iron oxide beads for nitrate removal from industrial wastewater

Popis výsledku v původním jazyce

Industrial sites worldwide significantly contribute to water pollution. Nitrates are a common effluent pollutant from such sites. Effective means to remove nitrate ions (NO3-) from polluted waters are needed. Chitosan beads, which are a non-toxic, biocompatible, and biodegradable polymer, are used for this purpose in this research. Iron-oxide nanoparticles are synthesized via the co-precipitation route and embedded into chitosan by chemical co-precipitation to form ion exchange chitosan beads (IECBs) for NO3- removal. The performance of the IECBs in a batch system was studied against NO3- adsorption from industrial water. Morphological, structural, and chemical characterization was performed by SEM, EDX mapping, BET, XRD, and FTIR, while the extent of NO3- adsorption was quantified using UV-vis spectroscopy. Different factors influencing the adsorption of NO3- on the IECBs were investigated, including the adsorbent dosage, pH of the solution, initial concentration, and interaction time. It is demonstrated that pseudo-second-order isothermal and kinetic models were best fits to the experimental data. It was found that the IECBs had a maximum adsorption capacity of 47.07 mg g-1 and could load up to similar to 93% of the NO3- from the batch system. The regeneration efficiency for the IECBs over 5 cycles remained high in the range of 93% to 79%, indicating their potential for industrial water treatment use. Synthesis of regenerable chitosan-embedded magnetic iron oxide beads.

Název v anglickém jazyce

Regenerable chitosan-embedded magnetic iron oxide beads for nitrate removal from industrial wastewater

Popis výsledku anglicky

Industrial sites worldwide significantly contribute to water pollution. Nitrates are a common effluent pollutant from such sites. Effective means to remove nitrate ions (NO3-) from polluted waters are needed. Chitosan beads, which are a non-toxic, biocompatible, and biodegradable polymer, are used for this purpose in this research. Iron-oxide nanoparticles are synthesized via the co-precipitation route and embedded into chitosan by chemical co-precipitation to form ion exchange chitosan beads (IECBs) for NO3- removal. The performance of the IECBs in a batch system was studied against NO3- adsorption from industrial water. Morphological, structural, and chemical characterization was performed by SEM, EDX mapping, BET, XRD, and FTIR, while the extent of NO3- adsorption was quantified using UV-vis spectroscopy. Different factors influencing the adsorption of NO3- on the IECBs were investigated, including the adsorbent dosage, pH of the solution, initial concentration, and interaction time. It is demonstrated that pseudo-second-order isothermal and kinetic models were best fits to the experimental data. It was found that the IECBs had a maximum adsorption capacity of 47.07 mg g-1 and could load up to similar to 93% of the NO3- from the batch system. The regeneration efficiency for the IECBs over 5 cycles remained high in the range of 93% to 79%, indicating their potential for industrial water treatment use. Synthesis of regenerable chitosan-embedded magnetic iron oxide beads.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10503 - Water resources

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Environmental Science-Advances

ISSN

2754-7000

e-ISSN

—

Svazek periodika

3

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

572-584

Kód UT WoS článku

001169277500001

EID výsledku v databázi Scopus

2-s2.0-85186188932