Conductivity of carbonized and activated leather waste

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10252648" target="_blank" >RIV/61989100:27710/23:10252648 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10474000 RIV/70883521:28610/23:63569339 RIV/60461373:22810/23:43927595

Výsledek na webu

<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85164340937&origin=resultslist&sort=plf-f&src=s&sid=431fc89c358a93b8c8eeff49b521bdef&sot=b&sdt=b&s=AUTHOR-NAME%28Grycova+B%29&sl=22&sessionSearchId=431fc89c358a93b8c8eeff49b521bdef" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85164340937&origin=resultslist&sort=plf-f&src=s&sid=431fc89c358a93b8c8eeff49b521bdef&sot=b&sdt=b&s=AUTHOR-NAME%28Grycova+B%29&sl=22&sessionSearchId=431fc89c358a93b8c8eeff49b521bdef</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scp.2023.101172" target="_blank" >10.1016/j.scp.2023.101172</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Conductivity of carbonized and activated leather waste

Popis výsledku v původním jazyce

The conductivity of chromium-tanned pigskin leather waste carbonized in various manner to nitrogen-containing carbons is reported. Four protocols have been tested: (1) The simple carbonization at 800 oC in inert atmosphere, (2) the carbonization at 500 oC followed by the activation with potassium hydroxide at 800 oC, (3) direct activation with the alkali at 800 oC and (4) the similar activation with potassium hydroxide excess. The fibrous collagen morphology was preserved after the carbonization except for some shrinkage. The yield in the simple carbonization, 26.9 wt%, was reduced to 23.9 wt% for the activated products. Elemental analysis indicated reduced content of organic elements after carbonization, and X-ray fluorescence the composition of growing inorganic part. The chromium content in biochar was close to 12 wt% and the X-ray diffraction revealed also the presence of metallic chromium in addition to expected chromium(III) oxide and sulfide. FTIR and Raman spectroscopies demonstrated the typical pattern of carbonized materials. The specific surface area and pore volume increased after the activation. The resistivity of the powdered carbonized leather was determined in four-point van der Pauw setup. It decreased by more than one order of magnitude as applied pressure increased from 0.1 to 10 MPa. The sample conductivity depended only a little on the way of carbonization and was of the order of tenths to units S cmMINUS SIGN 1 at 10 MPa. The precarbonization followed by the activation provided the best result with respect to the yield, nitrogen-content, specific surface area and conductivity of the carbonized material. (C) 2023 Elsevier B.V.

Název v anglickém jazyce

Conductivity of carbonized and activated leather waste

Popis výsledku anglicky

The conductivity of chromium-tanned pigskin leather waste carbonized in various manner to nitrogen-containing carbons is reported. Four protocols have been tested: (1) The simple carbonization at 800 oC in inert atmosphere, (2) the carbonization at 500 oC followed by the activation with potassium hydroxide at 800 oC, (3) direct activation with the alkali at 800 oC and (4) the similar activation with potassium hydroxide excess. The fibrous collagen morphology was preserved after the carbonization except for some shrinkage. The yield in the simple carbonization, 26.9 wt%, was reduced to 23.9 wt% for the activated products. Elemental analysis indicated reduced content of organic elements after carbonization, and X-ray fluorescence the composition of growing inorganic part. The chromium content in biochar was close to 12 wt% and the X-ray diffraction revealed also the presence of metallic chromium in addition to expected chromium(III) oxide and sulfide. FTIR and Raman spectroscopies demonstrated the typical pattern of carbonized materials. The specific surface area and pore volume increased after the activation. The resistivity of the powdered carbonized leather was determined in four-point van der Pauw setup. It decreased by more than one order of magnitude as applied pressure increased from 0.1 to 10 MPa. The sample conductivity depended only a little on the way of carbonization and was of the order of tenths to units S cmMINUS SIGN 1 at 10 MPa. The precarbonization followed by the activation provided the best result with respect to the yield, nitrogen-content, specific surface area and conductivity of the carbonized material. (C) 2023 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

—

Návaznosti

—

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Sustainable Chemistry and Pharmacy

ISSN

2352-5541

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

001055395400001

EID výsledku v databázi Scopus

2-s2.0-85164340937