Removal of manganese by adsorption onto newly synthesized TiO2-based adsorbent during drinking water treatment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F23%3A00547350" target="_blank" >RIV/61388980:_____/23:00547350 - isvavai.cz</a>

Alternative codes found

RIV/67985874:_____/23:00547350

Result on the web

<a href="https://www.tandfonline.com/doi/full/10.1080/09593330.2021.2000042" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/09593330.2021.2000042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/09593330.2021.2000042" target="_blank" >10.1080/09593330.2021.2000042</a>

Result language

angličtina

Original language name

Removal of manganese by adsorption onto newly synthesized TiO2-based adsorbent during drinking water treatment

Original language description

Manganese is naturally present in water, but its increased concentration in potable water is undesirable for multiple reasons. This study investigates an alternative method of demanganization by a newly synthesized TiO2-based adsorbent prepared through the transformation of titanyl sulphate monohydrate to amorphous sodium titanate. Its adsorption capacity for Mn2+ was determined, while a range of influential factors, such as the effect of contact time, adsorbent dosage, pH value, and added ions was evaluated. The adsorbent appeared highly effective for Mn2+ removal owing to its unique characteristics. Besides adsorption via electrostatic interactions, ion-exchange was also involved in the Mn2+ removal. Although the Mn2+ removal occurred within the whole investigated pH range of 4–8, the maximum was achieved at pH 7, with qe = 73.83 mg·g-1. Equilibrium data revealed a good correlation with Langmuir isotherm in the absence of any ions or in the presence of monovalent co-existing ions, while the results in the presence of divalent co-existing ions showed a better fit to Freundlich isotherm. Additionally, the presence of monovalent cations (Na+, K+) only slightly decreased the Mn2+ removal efficiency as compared to divalent cations (Ca2+, Mg2+) that caused a greater decrease. However, the effect of anions (Cl-, SO42-) was insignificant. To provide insight into the adsorbent safety, the toxicity assessment was performed and showed no harmful effect on cell activity. Furthermore, the residual concentration of titanium after adsorption was always below the detection limit. The results imply that the synthesized TiO2-based adsorbent is a safe promising alternative method for demanganization.

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

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/LM2015073" target="_blank" >LM2015073: Nanomaterials and Nanotechnologies for Environment Protection and Sustainable Future</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Environmental Technology

ISSN

0959-3330

e-ISSN

1479-487X

Volume of the periodical

44

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1322-1333

UT code for WoS article

000723055200001

EID of the result in the Scopus database

2-s2.0-85119992168