CARBON MATERIALS PREPARED FROM CIGARETTE FILTERS APPLIED FOR CLOFIBRIC ACID ADORPTION

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F21%3A73607226" target="_blank" >RIV/61989592:15640/21:73607226 - isvavai.cz</a>

Result on the web

<a href="https://www.confer.cz/nanocon/2020/read/3733-carbon-materials-prepared-from-cigarette-filters-applied-for-clofibric-acid-adsorption.pdf" target="_blank" >https://www.confer.cz/nanocon/2020/read/3733-carbon-materials-prepared-from-cigarette-filters-applied-for-clofibric-acid-adsorption.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

CARBON MATERIALS PREPARED FROM CIGARETTE FILTERS APPLIED FOR CLOFIBRIC ACID ADORPTION

Original language description

Chars and carbon membranes were prepared from fresh and smoked cigarette filters, and used as adsorbents for clofibric acid removal. Carbonization of cigarette filters took place at 650, 750 and 900 degrees C, whereas membranes were synthesized by filter dissolution in acetone, using NaCl (porogen) and glycerol (plasticizer). Acid mediated carbonization (225 and 250 degrees C) of the membranes was performed. Solution pH was monitored throughout the adsorption experiments. The chars are basic powders with apparent surface areas up to 494 m(2) g(-1) and a porosity composed by supermicropores (0.7-2 nm wide) and mesopores (2-50 nm wide), allowing clofibric acid (critical dimension 0.6 nm) to access all adsorption sites. Carbonization of smoked filters promoted higher porosity levels and SEM analysis showed that a more extensive carbonization occurred in the outer surface of the chars particles. The presence of TiO2 particles was confirmed in all the chars. Pores were homogeneously created at the membranes surface. Acidic carbon membranes (pH(PZC) approximate to 3.7) were obtained with different degrees of porosity, proportional to the pyrolysis temperature. Both forms of clofibric acid (protonated and deprotonated) were readily adsorbed onto the carbon materials, with exception of the chars prepared at 900 degrees C, which adsorbed predominantly the deprotonated form. In equilibrium, an inverse correlation between solution pH and concentration of the pollutant was observed, and higher uptakes were observed for experiments with solution pH values above 5, suggesting that adsorption of the neutral species contributed significantly to the overall removal.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

21001 - Nano-materials (production and properties)

Project

<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Article name in the collection

NANOCON Conference Proceedings - International Conference on Nanomaterials

ISBN

978-80-87294-98-7

ISSN

2694-930X

e-ISSN

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Number of pages

5

Pages from-to

294-299

Publisher name

TANGER Ltd

Place of publication

Brno

Event location

Brno

Event date

Oct 21, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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