Nanoporous Activated Carbon Derived via Pyrolysis Process of Spent Coffee: Structural Characterization. Investigation of Its Use for Hexavalent Chromium Removal
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73603730" target="_blank" >RIV/61989592:15310/20:73603730 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27640/20:10247211
Result on the web
<a href="https://www.mdpi.com/2076-3417/10/24/8812/htm" target="_blank" >https://www.mdpi.com/2076-3417/10/24/8812/htm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/app10248812" target="_blank" >10.3390/app10248812</a>
Alternative languages
Result language
angličtina
Original language name
Nanoporous Activated Carbon Derived via Pyrolysis Process of Spent Coffee: Structural Characterization. Investigation of Its Use for Hexavalent Chromium Removal
Original language description
This work deals with the development of an activated carbon adsorber via the exploitation of spent coffee waste. Economic and environmental benefits from such processes are extended. The application on hexavalent chromium removal was tested. Hexavalent chromium (Cr(VI)) is a heavy metal that is highly soluble and exhibits toxic effects on biological systems. Nevertheless, it is used in many industrial applications. The adsorption process of Cr(VI), using activated carbon (AC), is under investigation globally. On the other hand, around six million tons of spent coffee is sent to landfill annually. In the spirit of cyclic economy, this research investigated the production of AC from spent coffee for the removal of Cr(VI) from wastewater. The AC was produced via pyrolysis process under a nitrogen atmosphere. Chemical activation using potassium hydroxide (KOH) occurred simultaneously with the pyrolysis process. The produced AC was tested as an absorber of Cr(VI). The best fitted kinetic model was the diffusion-chemisorption model. A 24-h adsorption experiment was carried out using a solution with a pH of 3 and an initial Cr(VI) concentration of 54.14 ppm. This resulted in an experimental maximum capacity of 109 mg/g, while the theoretical prediction was 137 mg/g. It also resulted in an initial adsorption rate (r(i)) of 110 (mg/(g h)). The Brunauer-Emmett-Teller surface area (S-gBET) was 1372 m(2)/g, the Langmuir surface area (S-gLang.) was 1875 m(2)/g, and the corrugated pore structure model surface area (S-gCPSM) was 1869 m(2)/g. The micropore volume was 84.6%, exhibiting micropores at D-micro1 = 1.28 and D-micro2 = 1.6 nm. The tortuosity factor (tau) was 4.65.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GX19-27454X" target="_blank" >GX19-27454X: Control of electronic properties of metal-containing molecules through their noncovalent interactions with solvents, ligands and 2D nanosystems</a><br>
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Sciences-Basel
ISSN
2076-3417
e-ISSN
—
Volume of the periodical
10
Issue of the periodical within the volume
24
Country of publishing house
CH - SWITZERLAND
Number of pages
20
Pages from-to
"8812-1"-"8812-20"
UT code for WoS article
000602961100001
EID of the result in the Scopus database
2-s2.0-85097552422