Gum karaya (Sterculia urens) stabilized zero-valent iron nanoparticles: characterization and applications for the removal of chromium and volatile organic pollutants from water

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F17%3A00476359" target="_blank" >RIV/61388980:_____/17:00476359 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24620/17:00004119

Result on the web

<a href="http://dx.doi.org/10.1039/c7ra00464h" target="_blank" >http://dx.doi.org/10.1039/c7ra00464h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c7ra00464h" target="_blank" >10.1039/c7ra00464h</a>

Result language

angličtina

Original language name

Gum karaya (Sterculia urens) stabilized zero-valent iron nanoparticles: characterization and applications for the removal of chromium and volatile organic pollutants from water

Original language description

This paper illustrates a method for the stabilization of nanoscale zerovalent iron (NZVI) suspensions with a ˝green˝ biopolymer, Gum Karaya (GK). The stability, sedimentation, aggregation behavior and reactivity towards Cr(VI) and volatile organic compounds using NZVI-GK (GK stabilized NZVI) and bare NZVI, were assessed. The stabilization mechanism of NZVI-GK was demonstrated using ATR-FTIR, XRD, XPS, TEM, SEM, TGA and particle size analysis. The NZVI-GK nanoparticle suspension was found to be stable for at least three months, suggesting a superior stability rendering property of GK which forms a scaffold to prevent NZVI from aggregating. Batch experiments, centred on Cr(VI) reduction and degradation of volatile organic compounds, confirmed that NZVI-GK was more reactive than bare NZVI. Furthermore, XPS and ICP-MS results revealed that Cr(VI) was reduced to Cr(III) by NZVI-GK and the remaining Cr(III) in solution was adsorbed onto GK, thereby completely removing chromium from the contaminated water. Our study suggests that an important role is played due to the attributes of GK (which include nontoxicity, biodegradability and cost-effectiveness) in conjunction with the ability of NZVI to remove all chromium viz. [Cr(VI) and Cr(III)] coupled with the total degradation and removal of VOCs (cis-1,2-dichloroethene, perchloroethene and trichloroethene) from water.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

RSC Advances

ISSN

2046-2069

e-ISSN

—

Volume of the periodical

7

Issue of the periodical within the volume

23

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

13997-14009

UT code for WoS article

000396012500041

EID of the result in the Scopus database

2-s2.0-85014375746