| Autor: |
Momčilović Milan Z., Purenović Milovan M., Miljković Milena N., Bojić Aleksandar Lj., Zarubica Aleksandra R., Ranđelović Marjan S. |
| Jazyk: |
English<br />Serbian |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Hemijska Industrija, Vol 65, Iss 3, Pp 241-247 (2011) |
| Druh dokumentu: |
article |
| ISSN: |
0367-598X |
| DOI: |
10.2298/HEMIND110124016M |
| Popis: |
Cones of the European Black pine and Horse chestnut kernel, regarded as brown municipal waste, was utilized in this work as a precursor for powdered activated carbons. Chemical activation was employed at 500°C in inert atmosphere of nitrogen. Standard physico-chemical analyses were performed to examine obtained products. FTIR method was employed to determine fuctional groups which were found to be typical for activated carbons. Acidic oxygen groups were quantitatively determined using Boehm titrations. It was established that carboxylic groups on pine cone activated carbon, and phenolic groups on chestnut kernel activated carbon were dominant from all acidic oxygen groups. Since both contact pH and pHPZC were determined to be fairly acidic, it could be concluded that obtained activated carbons belong to L-type. Shape and layout of micrometer dimensioned particles were observed by scanning electron microscopy. Particles of different shapes and dimensions along with small cracks and wide crevices and voids were noticed. Textural analysis was used to determine specific surface area and pore distribution of obtained activated carbons. Obtained products possess highly developed surface area and wide pore distribution. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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